Title:
Adjustable width bookend construction
Kind Code:
A1


Abstract:
An adjustable width bookend construction (10) including a pair of generally L-shaped bookend members (20)(20) each having a side wall (22) provided with a slot (24) and a rear wall (21) provided with a support member (23) wherein, the bookend members (20)(20) are operatively and slidably associated with one another via a cross-member (31) dimensioned to be slidably received within the slots (24)(24) and be slidably supported on the support members (23). Furthermore, the cross-member (31) is optionally provided with a pair of end cap members (32)(32) that prevent lateral displacement of the bookend construction (10) relative to and resting upon an elevated level surface. Furthermore, holding block assemblies (40) are optionally provided to prevent aftward displacement of the bookend construction (10) relative to a collection books.



Inventors:
Rivers, Edward Alan (Colorado Springs, CO, US)
Application Number:
10/845576
Publication Date:
12/15/2005
Filing Date:
05/13/2004
Primary Class:
International Classes:
A47B65/00; (IPC1-7): A47B65/00
View Patent Images:
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Primary Examiner:
NEWTON, JARED W
Attorney, Agent or Firm:
EDWARD A. RIVERS (3040 ELLESMERE DRIVE, COLORADO SPRINGS, CO, 80922, US)
Claims:
1. An adjustable width bookend construction comprising a pair of mirror image bookend members each having at least one vertically disposed wall provided with a slot; a cross-member dimensioned to be slidably received in said slots in each of said bookend members; and, means associated with each of said bookend members for vertically supporting portions of said cross-member.

2. The construction as in claim 1; wherein, said bookend members each have a generally L-shaped configuration.

3. The construction as in claim 2; wherein, said bookend members each have a vertically oriented rear wall and a vertically oriented side wall.

4. The construction as in claim 3; wherein, said side walls are each provided with a slot.

5. The construction as in claim 4; wherein, said rear walls are each provided with an inwardly projecting support member.

6. The construction as in claim 5; wherein, said inwardly projecting support members support a spanner unit, wherein, said spanner unit comprises said cross-member and an optional pair of end cap members affixed on each of the opposite ends of said cross-member.

7. The construction as in claim 6; wherein, means for linearly clutching said cross-member comprises each of said vertically oriented rear walls laterally offset from each of said slots in said bookend members, wherein, the aft face of a portion of said cross-member contacts the inside forward edge of said vertically oriented rear wall, and the forward face of another portion of said cross-member contacts the forward edge of said slot.

8. The construction as in claim 7; wherein, means for linearly clutching said cross-member comprises each of said inwardly projecting support members laterally offset from each of said slots in said bookend members, wherein, the lower edge of a portion of said cross-member contacts said support member, and the upper edge of another portion of said cross-member contacts the upper edge of said slot.

9. The construction as in claim 8; wherein, means for freely assembling each of said bookend members to said cross-member comprise said inwardly projecting support member laterally offset from said vertically oriented side wall by a clearance slightly greater than the vertical dimension of said cross-member, and said slot is open.

10. The construction as in claim 6; wherein, optional means associated with said spanner unit for limiting travel of said bookend members along said cross-member comprise said end cap members.

11. The construction as in claim 10, wherein, each of said end cap members comprises an end plate, an optional support leg, and an optional capture arm.

12. The construction as in claim 11; wherein, each of said end plates includes a centerward facing vertical groove dimensioned to slidably receive said support leg, said capture arm, and one end of said cross-member.

13. The construction as in claim 12; wherein, said capture arm is positioned to rest affixed on said cross-member, said cross-member is positioned to rest affixed on said support leg, said support leg is positioned to rest freely on an elevated level surface, and said end plate rests freely on said elevated level surface.

14. The construction as in claim 13, wherein, the forward and aftward projections of said end plate, and the upward projection of said capture arm, each provide said means as limit stops at each of the opposite ends of said cross-member for each of said bookend members.

15. The construction as in claim 1; wherein, a spanner unit comprises said cross-member and an optional pair of end cap members affixed on each of the opposite ends of said cross-member.

16. The construction as in claim 15; wherein, optional means associated with said spanner unit for preventing lateral displacement of said bookend construction relative to and resting upon an elevated level surface comprise said pair of end cap members.

17. The construction as in claim 16, wherein, each of said end cap members comprises an end plate and an optional support leg.

18. The construction as in claim 17; wherein, each of said end plates includes a centerward facing vertical groove dimensioned to slidably receive one end of said cross-member and said support leg.

19. The construction as in claim 18; wherein, said cross-member is positioned to rest affixed on said support leg, and said support leg is positioned to rest freely on said elevated level surface.

20. The construction as in claim 19; wherein, said cross-member has a predetermined length whereby the centerward face of each of said end plates clears the edges of said elevated level surface, wherein, the lower edge of each of said end plates is elevated below said elevated level surface.

21. The construction as in claim 1; wherein, optional means for preventing aftward displacement of said bookend construction relative to a collection of books comprise at least one holding block assembly.

22. The construction as in claim 21; wherein, said holding block assembly comprises a thin base mat and a rear block, wherein, means for attaching said base mat to said rear block comprise an attaching element.

23. The construction as in claim 22; wherein, said base mats lie flat on a level surface, and said rear blocks abut aft faces of said bookend construction, wherein, means associated with said base mats to firmly position said holding block assemblies on said level surface utilize part of said collection of books as weights when said base mats are positioned between said bookend members, or utilize any weighted objects when said pair of bookend members are positioned between said base mats.

24. The construction as in claim 23; wherein, said attaching element comprises a rectangular plate, wherein, the aft edge of said base mat is tightly sandwiched between said rectangular plate and said rear block.

Description:

CROSS REFERENCE TO RELATED APPLICATIONS

This invention was the subject matter of Document Disclosure Program Registration No. 539,425, filed in the United States Patent and Trademark Office on Oct. 6, 2003.

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not Applicable.

REFERENCE TO MICROFICHE APPENDIX

Not Applicable

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to the field of bookend constructions in general and in particular to adjustable width bookend constructions.

2. Description of Related Art

As can be seen by reference to the following U.S. Pat. Nos. 314,436; 758,868; 1,363,138; 1,598,467; 1,674,359; 1,891,420; and 6,354,446; the prior art is replete with myriad and diverse adjustable width bookend constructions.

While all of the aforementioned prior art constructions are more than adequate for the basic purpose and function for which they have been specifically designed, they are uniformly deficient with respect to their failure to provide a simple, efficient, and practical adjustable width bookend construction wherein, the book engaging end units clutch, support and suspend a spanner unit in a vertical fashion.

In virtually all of the prior art constructions, the book engaging units are movably supported on a horizontal spanner unit that rests on a horizontal support surface thereby producing a rather conventional and predictable orientation of the major components of an adjustable width bookend.

As a consequence of the foregoing situation, there has existed a longstanding need among book loving consumers for a new and improved adjustable width bookend construction that has radically different aesthetic appearance and function that serves not only to securely support a plurality of books in an upright orientation, but which will also serve as a topic of conversation, and the provision of such a construction is a stated objective of the present invention.

BRIEF SUMMARY OF THE INVENTION

Briefly stated, the adjustable width bookend construction that forms the basis of the present invention comprises a pair of book engaging end units that suspend and are slidably disposed relative to a spanner unit.

As will be explained in greater detail further on in the specification, each of the book engaging end units comprises a generally L-shaped bookend member formed by a rear wall and a side wall wherein, each rear wall is provided with a horizontally disposed support member to support a portion of the spanner unit and each side wall is provided with a vertical slot dimensioned to slidably receive and clutch another portion of the spanner unit.

In addition, the spanner unit comprises an elongated rectangular cross-member dimensioned to be slidably received in the vertical slots in each of the side walls and be suspended from the support members on the rear walls of the respective bookend members.

Furthermore, the outboard ends of a cross-member may be provided with end cap members configured to limit the lateral travel of the bookend members relative to the cross-member.

Furthermore, the outboard ends of a predetermined length cross-member may be provided with end cap members may be configured to extend beyond and down the opposite edges of an elevated level surface to prevent lateral displacement of the bookend construction relative to the elevated level surface.

Furthermore, holding block assemblies are provided to prevent aftward displacement of the bookend construction relative to a collection of books.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

These and other attributes of the invention will become more clear upon a thorough study of the following description of the best mode for carrying out the invention, particularly when reviewed in conjunction with the drawings, wherein:

FIG. 1 is a perspective view of the adjustable width bookend construction in use configured to prevent lateral displacement of the bookend construction relative to an elevated level surface;

FIG. 2 is a front elevation view of the bookend construction;

FIG. 3 is an exploded perspective view of the bookend construction;

FIG. 4 is a perspective view of the adjustable width bookend construction in use configured for open surface placement of the bookend construction; and,

FIG. 5 is a perspective view of two identical holding block assemblies in use.

DETAILED DESCRIPTION OF THE INVENTION

As can be seen by reference to the drawings, the adjustable width bookend construction that forms the basis of the present invention is designated generally by the reference number 10. The construction 10 comprises a pair of mirror image book engaging end units (bookend members) 20 20 and a spanner unit 30. These units will now be described in seriatim fashion.

As shown in FIGS. 1 through 4, the mirror image book engaging end units 20 20 each comprises a generally L-shaped bookend member 20 having a vertically oriented rear wall panel 21 and a vertically oriented side wall 22.

The lower portion of the free end of the rear walls are each provided with inwardly projecting support members 23 23, and as can best be seen by reference to FIG. 3, the lower portion of the captive end of the side walls 22 22 are each provided with elongated slots 24 24 which extend upwardly from the bottom of each of the side walls 22 22.

Furthermore, as shown in FIGS. 1 through 4, the spanner unit 30 comprises an elongated rectangular cross-member 31 dimensioned to be slidably received within the slots 24 24 in the side walls 22 22 and supported on the support members 23 23 in the rear walls 21 21 such that the bookend members 20 20 are linearly clutched as well as slidably adjustable toward and away from one another on the cross-member 31.

In addition, as best shown in FIGS. 2 and 3, the opposite ends of the elongated cross-member 31 may be provided with end cap members 32 32 wherein, each comprises an end plate 33 having an inwardly facing vertical groove 36 dimensioned to slidably receive one end of the cross-member 31 and further adapted to receive a lower support leg 34 that the cross-member 31 rests upon. As shown in FIG. 5, each of the end cap members 32 32 may be adapted such that the inwardly facing vertical groove 36 slidably receives a capture arm 35 that rests on the cross-member 31.

Furthermore, the forward and aftward projecting portions of each end plate 33, and each upwardly projecting capture arm 35, each function to limit the lateral displacement of each of the bookend members 20 20 relative to the cross-member 31.

As shown in FIGS. 1 through 3, if the cross-member 31 spans the opposite edges of an elevated level surface, the end cap members 32 32 may also be configured to extend beyond and down the opposite edges of the elevated level surface to prevent lateral displacement of the bookend construction 10 relative to the elevated level surface. Otherwise, as shown in FIG. 4, the end cap members 32 32 may be configured to rest on a level surface.

Finally, as shown in FIG. 5, an optional identical pair of holding blocks 40 each comprising a rear block 41, a base mat 42, and an attaching member 43 for attaching the base mat 42 to the rear block 41, functions to prevent aftward displacement of the bookend construction 10 relative to a collection of books functionally supported by the bookend construction 10. The attaching member 43 is dimensioned to rest with clearance beneath the cross-member 31. In this design, the aft edge of the base mat 42 folds upward and is sandwiched between the attaching member 43 and the rear block 41, typically attached using screws through the attaching member 43 and base mat 42 into the rear block 41. Part of the supported collection of books rests on each base mat 42 fixing each holding block assembly 40 in place. The base mat is thin so as not to interfere with the level integrity of the surface, yet durable to withstand removal and replacement of individual books. The advantage of holding block assemblies becomes apparent when considering a large collection of books in use.

Although only an exemplary embodiment of the invention has been described in detail above, those skilled in the art will readily appreciate that many modifications are possible without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the following claims.

Having thereby described the subject matter of the present invention, it should be apparent that many substitutions, modifications, and variations of the invention are possible in light of the above teachings. It is therefore to be understood that the invention as taught and described herein is only to be limited to the extent of the breadth and scope of the appended claims.

TABLE 1
Patents for Bookend Utility and Design
PatentDateTitleDescription
153227Jul. 21, 1874self adjusting book racksbase channel sliding spring loaded
158751Jan. 12, 1875book racksbase fixed hinged
161293Mar. 23, 1875book supportshelf partition positive lock
174262Feb. 29, 1876book rackbase sliding hinged
186974Feb. 6, 1877book supportstandard bookend interlocking partition
202959Apr. 30, 1878book supportsstandard bookend
305863Sep. 30, 1884book suppportshelf sliding
314436Mar. 24, 1885book holderwraparound rigid
314437Mar. 24, 1885book holdershelf side filler
348382Aug. 31, 1886book holdershelf side filler
355511Jan. 4, 1887book supportshelf sliding
386674Jul. 24, 1888paper or bill filebase partition position stop
388674Aug. 28, 1888book support for shelvesshelf sliding
423647Mar 18, 1890bill filebase partition position stop
431373Jul. 1, 1890book and paper rackbase position stop
436704Sep. 16, 1890book supportshelf channel positive lock
451729May 5, 1891paper or bill filebase partition position stop
452673May 19, 1891book supportshelf sliding hinged linear clutch
470050Mar. 1, 1892letter filebase fixed hinged
481505Aug. 23, 1892book supporthanging partition position lever
489693Jan. 10, 1893adjustable book rackbase crossmember intersliding
497993May 23, 1893automatic file holderbase channel spring loaded
502321Aug. 1, 1893adjustable shelf partitionstandard bookend
504233Aug. 29, 1893book supportshelf sliding
518573Apr. 17, 1894book rackbase crossmember partition sliding
525186Aug. 28, 1894knockdown rackbase channel thumbscrew lock
527897Oct. 23, 1894book supportbase channel sliding
538500Apr. 30, 1895document filebase crossmember positive lock
560851May 26, 1896book supporthanging partition linear text missing or illegible when filed
575294Jan. 12, 1897book support & label holdershelf partition sliding
575832Jan. 26, 1897book supporthanging partition
583494Jun. 1, 1897book supportbase channel
593758Nov. 16, 1897portable book rackbase partition position stop
608515Aug. 22, 1898book supportshelf scissor side filler
657847Sep. 11, 1900book case or rackshelf partition position lever
660264Oct. 23, 1900divisible shelfshelf crossmember partition position stop
668961Feb. 26, 1901book rackshelf scissor filler
670446Mar. 26, 1901holding block for casesbase channel sliding spring loaded
679054Jul. 23, 1901shelf book supportshelf partition sliding
712936Nov. 4, 1902book holdershelf partition position stop
758868May 3, 1904book supportcrossmember partition position stop
767037Aug. 9, 1904shelf book supportshelf partition sliding
774984Nov. 15, 1904book supportbase position stop
779262Jan. 3, 1905traybase channel sliding
781890Feb. 7, 1905book supportershelf sliding
793364Jun. 27, 1905book & paper rackbase partition interlock
833887Oct. 23, 1906book supportbase channel partition hinged stowed
850977Apr. 23, 1907book supportstandard bookend
903769Nov. 10, 1908book support and adjustable shelf partitionshelf partition thumbscrew lock
931362Aug. 17, 1909movable partition or book supportbase position stop
934148Sep. 14, 1909book restbase fixed
935560Sep. 28, 1909book supporthanging sliding
945877Jan. 11, 1910desk book rackbase crossmember intersliding
999974Aug. 8, 1911file shelfbase channel partition sliding
1006328Oct. 17, 1911cigar rackbase crossmember intersliding
1022150Apr. 2, 1912book rackbase crossmember intersliding hinged
1049726Jan. 7, 1913display rackbase crossmember partition sliding
1237101Aug. 14, 1917book holderbase channel dovetailed sliding spring loaded
1257528Feb. 26, 1918file rackbase partition position stop
1283259Oct. 29, 1918ledger rackbase channel mechanical
1317550Sep. 30, 1919book rackbase crossmember intersliding
1336981Apr. 13, 1920book rackbase channel sliding
1340317May 18, 1920book shelfbase channel sliding
1358853Nov. 16, 1920binder traybase channel linear clutch
1363138Dec. 21, 1920bookrackbase crossmember partition text missing or illegible when filed
1370279Mar. 1, 1921folding book stopstandard bookend
1379766May 31, 1921portable book holderbase fixed
1395825Nov. 1, 1921clamping devicebase recoiling strap
1396910Nov. 15, 1921book frame and label holderstandard bookend shelf
1401171Dec. 27, 1921binder rackbase position stop roller
1409136Mar. 7, 1922book endstandard bookend
1415110May 9, 1922file rackbase partition position stop
1460642Jul. 3, 1923book rackbase channel sliding
1477634Dec. 18, 1923shipping case and display rackbase fixed
1489804Apr. 8, 1924follow boardbase channel partition linear text missing or illegible when filed
1506204Aug. 26, 1924library book support & indexshelf crossmember partition fixed
1508610Sep. 16, 1924shelvingshelf partition position stop
1557419Oct. 13, 1925book endstandard bookend
1562275Nov. 7, 1925book supporting devicebase partition position stop
1598467Aug. 31, 1926book supportstandard bookend (Weeks)
1621410Mar. 15, 1927supporting rackbase position stop
1660823Feb. 28, 1928card index and document filling devicebase crossmember linear clutch
1663432Mar. 20, 1928bookrackbase linear clutch
1674359Jun. 19, 1928filling devicebase crossmember linear clutch
1674582Jun. 19, 1928bookholderbase channel sliding spring loaded
1675269Sep. 13, 1923book supportshelf partition position stop
1682053Aug. 28, 1928book supportwraparound weighted
1682060Aug. 28, 1928adjustable book holderbase crossmember intersliding
1704011Mar. 5, 1929book endbase scissor
1747496Feb. 18, 1930counter partition holderbase channel partition sliding
1750575Mar. 11, 1930sectional desk accessorybase interlock
1750576Mar. 11, 1930desk distributor setbase interlock
1768379Jun. 24, 1930tag and tag holding devicebase crossmember intersliding
1772438Aug. 5, 1930office accessorybase interlock
1780872Nov. 4, 1930book rack or supportbase channel position stop
1795526Mar. 10, 1931book supportstandard bookend comered
1806642May 26, 1931bookstackshelf partition sliding
1832884Nov. 24, 1931shelf follower and end supportstandard bookend friction block
1853840Apr. 12, 1932book shelfbase channel partition sliding
1875288Aug. 30, 1932adjustable book supporting rackbase channel thumbscrew lock
1876346Sep. 6, 1932book endsbase recoiling strap
1891420Dec. 20, 1932book rackbase linear clutch
1898533Feb. 21, 1933paper filebase channel
1912229May 30, 1933book endstandard bookend hinged
1923996Aug. 22, 1933adjustable book end holderbase crossmember intersliding
1942456Jan. 9, 1934book holderstandard bookend book support
1992487Feb. 26, 1935combined bookedn & picture framestandard bookend
2031698Feb. 25, 1936book endstandard bookend
2032086Feb. 25, 1936combination lamp stand and book rackbase channel sliding spring loaded
2051448Aug. 18, 1936adjustable book end holderbase crossmember intersliding
2062802Dec. 1, 1936display appliancebase channel partition position stop
2076941Apr. 13, 1937book end and like supportbase coil
2096634Oct. 19, 1937book endbase recoiling strap
2104864Jan. 11, 1938support for books and the likehanging partition
2111406Mar. 15, 1938collapsible portable book restbase fixed hinged
2117667May 17, 1938book holderstandard bookend book holder
2117668May 17, 1938book holderstandard bookend book holder
2134606Oct. 25, 1938book rackbase crossmember partition sliding
2140656Dec. 20, 1938book end constructionbase crossmember sliding spring loaded
2151269Mar. 21, 1939display rack for booksstandard bookend book support
2206133Jul. 2, 1940book holderbase channel sliding spring loaded
2222190Nov. 19, 1940display rackbase channel sliding position stop
2264017Nov. 25, 1941bookrackbase sliding ratchet
2264086Nov. 25, 1941book support rackbase scissor
2284849Jun. 2, 1942book endbase recoiling strap
2294595Sep. 1, 1942adjustable book rackbase crossmember intersliding
2334251Nov. 16, 1943book endsstandard bookend
2364482Dec. 5, 1944book rackbase fixed
2368349Jan. 30, 1945filing cabinet guide separatorbase channel partition sliding
2504466Apr. 18, 1950adjustable partitionbase crossmember partition intersliding position stop
2529031Nov. 7, 1950book endbase crossmember intersliding
2534456Dec. 19, 1950self closing bookrackbase channel dovetailed sliding spring loaded
2537565Jan. 9, 1951book unit rackbase partition fixed
2538908Jan. 23, 1951shelf dividershelf partition sliding spring lock
2545844Mar. 20, 1951automatically adjustable bookrackbase crossmember intersliding spring loaded
2566800Sep. 4, 1951center extension tablebase crossmember intersliding
2620929Dec. 9, 1952multipurpose book rackbase crossmember
2624466Jan. 6, 1953bookholderbase crossmember intersliding
2652154Sep. 15, 1953display rackbase channel partition sliding
2658628Nov. 10, 1953adjustable shelf dividerbase partition position stop
2661568Dec. 8, 1953book holderstandard bookend
2665010Jan. 5, 1954bookendbase crossmember intersliding
2675922Apr. 20, 1954bookrackhanging partition sliding
2684765Jul. 27, 1954holder for books and the likebase channel linear clutch
2688409Sep. 7, 1954adjustable partition for shelvesshelf crossmember partition sliding
2726318Dec. 6, 1955bookend lampbase crossmember intersliding
2732082Jan. 24, 1956bookracksbase turning blocks
2738881Mar. 20, 1956display and storage holderbase recoiling strap
2767856Oct. 23, 1956book supportstandard bookend
2807369Sep. 24, 1957support for reading matterstandard bookend book support
2845188Jul. 29, 1958shelf and divider unitbase partition position stop
2872046Feb. 3, 1959book endsbase interlock
2884139Apr. 28, 1959snap-on bin dividershelf partition sliding
2905336Sep. 22, 1959partition for filing cabinet rocker compartmentshelf partition position stop
2911103Nov. 3, 1959device for supporting booksbase channel spring loaded
2953258Sep. 20, 1960detachable self wedging shelf dividerhanging partition sliding
2954878Oct. 4, 1960display rackbase crossmember partition positive lock
2959293Nov. 8, 1960record holderbase crossmember sliding spring loaded
3063567Nov. 13, 1962book rackbase crossmember linear text missing or illegible when filed
3120894Feb. 11, 1964shelving with reversible compressorbase channel partition lineartext missing or illegible when filed
3121494Feb. 18, 1964book stop deviceshelf crossmember intersliding
3126892Mar. 31, 1964adjustable partition for filesbase channel partition sliding positive lock
3138262Jun. 23, 1964slotted bookshelf/supportbase channel linear clutch
3142384Jul. 28, 1964adjustable bookshelves/bookendshanging channel partition sliding
3160282Dec. 8, 1964vertical shelf unitbase channel crossmember position stop
3171542Mar. 2, 1965book rackbase crossmember partition sliding
3182806May 11, 1965book rackbase coil
3202290Aug. 24, 1965book care systemshelf individual depth alignment
3202298Aug. 24, 1965bookendhanging partition sliding
3235092Feb. 15, 1966book supportstandard bookend friction bolck
3241683Mar. 22, 1966article retainerbase channel partition sliding
3269558Aug. 30, 1966compartmented shelf deviceshelf partition position stop
3285429Nov. 15, 1966shelf organizershelf partition sliding
3300057Jan. 24, 1967shelf organizerbase partition interlock
3301407Jan. 31, 1967shelf dividersbase channel
3318453May 9, 1967reversible file holderbase crossmember fixed
3318454May 9, 1967shelf with adjustable bookendsbase channel crossmember
3385450May 28, 1968bookendstandard bookend anti-tipping
3389805Jun. 25, 1968self adjusting telescoping bookendsbase frictionless spring loaded
3391793Jul. 9, 1968book rackbase crossmember partition sliding
3399782Sep. 3, 1968book endsbase recoiling strap
3425565Feb. 4, 1969adjustable storage shelf dividing structurebase position stop
3450268Jun. 17, 1969bookshelf divider & holderhanging partition position lever
3465896Sep. 9, 1969bookshelf and book supporthanging channel sliding
3489292Jan. 13, 1970book supporthanging sliding
3513983May 26, 1970shelf assemblybase channel linear clutch
3579710May 25, 1971traversable hardware in drivewaybase crossmember partition sliding
3601258Aug. 24, 1971bookend for shelvesshelf sliding
3604564Jul. 8, 1969book endsstandard bookend magnetic
3679064Jul. 25, 1972article holderbase crossmember intersliding
3739918Jun. 19, 1973cloth bolt holderbase crossmember sliding
3747775Jul. 24, 1973holder for books and the likebase crossmember sliding
3780873Dec. 25, 1973automatic display racksbase crossmember partition sliding
3780876Dec. 25, 1973shelf dividershelf partition sliding
3784021Jan. 8, 1974bookrackpivoting interlock
3800958Apr. 2, 1974bookrackbase crossmember sliding spring loaded
3844415Oct. 29, 1974support device for filesbase crossmember intersliding
3889816Jun. 17, 1975book holder and separatorhanging partition position stop
3905484Sep. 16, 1975flexible dividers for lateral shelf filingshelf partition position stop
3971556Jul. 27, 1976combination book end and dumbell apparatusstandard bookend weighted
3974918Aug. 17, 1976magnetic book supporting structurebase channel sliding
4002240Jan. 11, 1977combined bookrack and book supportbase crossmember fixed
4099624Jul. 11, 1978portable book rackbase crossmember partition position stop
4106735Aug. 15, 1978adjustable coil rackbase interlock
4113108Sep. 12, 1978adjustable book holding devicebase channel linear clutch
4135626Jan. 23, 1979constant force spring expandable clasp holderbase recoiling strap
4327838May 4, 1982clip-on book endshelf partition sliding
4358019Nov. 9, 1982book endbase interlock cornered
4410093Oct. 18, 1983device for organizing papers and filesbase position stop
4463854Aug. 7, 1984book support assemblybase recoiling wire
4569447Feb. 11, 1986bookrackbase fixed
4595105Jun. 17, 1986interlocking bookrackbase partition fixed
4606465Aug. 19, 1986expansible spring-loaded retention clampbase rolling strap
4637632Jan. 20, 1987holding devicebase interlock
4682696Jul. 28, 1987adjustable bookrackbase channel thumbscrew lock
4735324Apr. 5, 1988removable shelf separator and systembase crossmember partition sliding
4742922May 10, 1988book rack of selective capacitybase interlock
4759449Jul. 26, 1988interlocking expandable bookrackbase partition position stop
4782960Nov. 8, 1988divider with resilient base engagementshelf channel partition sliding
4858774Aug. 22, 1989shelving systemshelf partition position stop
4944413Jul. 31, 1990book support apparatusbase partition fixed
5036988Aug. 6, 1991bookend for metal shelvesstandard bookend
5072835Dec. 17, 1991tape cartridge holderbase partition sliding
5074420Dec. 24, 1991free-standing rack assemblybase crossmember partition fixed
5103987Apr. 14, 1992shelf engaging bookendshelf linear clutch
5121681Jun. 16, 1992extendible book shelfbase partition crossmember position stop
5183163Feb. 2, 1993interlocking continuous base bookendsbase interlock
5205420Apr. 27, 1993adjustable & self locking book rack/supportbase channel dovetailed linear clutch
5209357May 11, 1993hanging bookend devicehanging partition sliding
5217122Jun. 8, 1993adjustable bookend apparatushanging sliding spring loaded
5217124Jun. 8, 1993clip-on divider shelf deviceshelf partition sliding
5228578Jul. 20, 1993adjustable book shelfbase crossmember partition sliding
5275297Jan. 4, 1994clip-on book support and label holdershelf partition sliding
5325792Jul. 5, 1994bookshelf w/adjustable locking bookendsbase channel sliding press release
5732832Mar. 31, 1998adjustable divider unit to support notebooksshelf partition position stop
5740926Apr. 21, 1998bookshelf w/adjustable locking bookendsbase channel thumbscrew lock
5871104Feb. 16, 1999adjustable support apparatushanging channel spring hinge
6334539Jun. 1, 2002bendable bookendstandard bookend
6352162Mar. 5, 2002interlocking bookendsbase interlock
6354446Mar. 12, 2002space adjustable interlockingcrossmember partition interlock
6578717Jun. 17, 2003economical desktop bookcasebase fixed
base151current patents
shelf41no proprietary base
hanging16linear clutch concept
crossmember2text missing or illegible when filed
wraparound2
pivoting interlock1
standard bookend variation28
241

TABLE 2
Patents for Bookend Utility and Design
PatentDateTitleDescription
583494Jun. 1, 1897book supportbase channel
1898533Feb. 21, 1933paper filebase channel
3301407Jan. 31, 1967shelf dividersbase channel
3318454May 9, 1967shelf with adjustable bookendsbase channel crossmember
3160282Dec. 8, 1964vertical shelf unitbase channel crossmember position stop
5205420Apr. 27, 1993adjustable & self locking book rack/supportbase channel dovetailedtext missing or illegible when filed
1237101Aug. 14, 1917book holderbase channel dovetailed sliding spring loaded
2534456Dec. 19, 1950self closing bookrackbase channel dovetailed sliding spring loaded
1358853Nov. 16, 1920binder traybase channel linear clutchtext missing or illegible when filed
2684765Jul. 27, 1954holder for books and the likebase channel linear clutchtext missing or illegible when filed
3138262Jun. 23, 1964slotted bookshelf/supportbase channel linear clutchtext missing or illegible when filed
3513983May 26, 1970shelf assemblybase channel linear clutchtext missing or illegible when filed
4113108Sep. 12, 1978adjustable book holding devicebase channel linear clutchtext missing or illegible when filed
1283259Oct. 29, 1918ledger rackbase channel mechanical
833887Oct. 23, 1906book supportbase channel partition hinged stowed
1489804Apr. 8, 1924follow boardbase channel partition lineartext missing or illegible when filed
3120894Feb. 11, 1964shelving with reversible compressorbase channel partition lineartext missing or illegible when filed
2062802Dec. 1, 1936display appliancebase channel partition position stop
999974Aug. 8, 1911file shelfbase channel partition sliding
1747496Feb. 18, 1930counter partition holderbase channel partition sliding
1853840Apr. 12, 1932book shelfbase channel partition sliding
2368349Jan. 30, 1945filing cabinet guide separatorbase channel partition sliding
2652154Sep. 15, 1953display rackbase channel partition sliding
3241683Mar. 22, 1966article retainerbase channel partition sliding
3126892Mar. 31, 1964adjustable partition for filesbase channel partition sliding positive lock
1780872Nov. 4, 1930book rack or supportbase channel position stop
527897Oct. 23, 1894book supportbase channel sliding
779262Jan. 3, 1905traybase channel sliding
1336981Apr. 13, 1920book rackbase channel sliding
1340317May 18, 1920book shelfbase channel sliding
1460642Jul. 3, 1923book rackbase channel sliding
3974918Aug. 17, 1976magnetic book supporting structurebase channel sliding
2222190Nov. 19, 1940display rackbase channel sliding position stop
5325792Jul. 5, 1994bookshelf w/adjustable locking bookendsbase channel sliding press release
153227Jul. 21, 1874self adjusting book racksbase channel sliding spring loaded
670446Mar. 26, 1901holding block for casesbase channel sliding spring loaded
1674582Jun. 19, 1928bookholderbase channel sliding spring loaded
2032086Feb. 25, 1936combination lamp stand and book rackbase channel sliding spring loaded
2206133Jul. 2, 1940book holderbase channel sliding spring loaded
497993May 23, 1893automatic file holderbase channel spring loaded
2911103Nov. 3, 1959device for supporting booksbase channel spring loaded
525186Aug. 28, 1894knockdown rackbase channel thumbscrew lock
1875288Aug. 30, 1932adjustable book supporting rackbase channel thumbscrew lock
4682696Jul. 28, 1987adjustable bookrackbase channel thumbscrew lock
5740926Apr. 21, 1998bookshelf w/adjustable locking bookendsbase channel thumbscrew lock
2076941Apr. 13, 1937book end and like supportbase coil
3182806May 11, 1965book rackbase coil
2620929Dec. 9, 1952multipurpose book rackbase crossmember
3318453May 9, 1967reversible file holderbase crossmember fixed
4002240Jan. 11, 1977combined bookrack and book supportbase crossmember fixed
489693Jan. 10, 1893adjustable book rackbase crossmember intersliding
945877Jan. 11, 1910desk book rackbase crossmember intersliding
1006328Oct. 17, 1911cigar rackbase crossmember intersliding
1317550Sep. 30, 1919book rackbase crossmember intersliding
1682060Aug. 28, 1928adjustable book holderbase crossmember intersliding
1768379Jun. 24, 1930tag and tag holding devicebase crossmember intersliding
1923996Aug. 22, 1933adjustable book end holderbase crossmember intersliding
2051448Aug. 18, 1936adjustable book end holderbase crossmember intersliding
2294595Sep. 1, 1942adjustable book rackbase crossmember intersliding
2529031Nov. 7, 1950book endbase crossmember intersliding
2566800Sep. 4, 1951center extension tablebase crossmember intersliding
2624466Jan. 6, 1953bookholderbase crossmember intersliding
2665010Jan. 5, 1954bookendbase crossmember intersliding
2726318Dec. 6, 1955bookend lampbase crossmember intersliding
3679064Jul. 25, 1972article holderbase crossmember intersliding
3844415Oct. 29, 1974support device for filesbase crossmember intersliding
1022150Apr. 2, 1912book rackbase crossmember intersliding hinged
2545844Mar. 20, 1951automatically adjustable bookrackbase crossmember intersliding spring loaded
1660823Feb. 28, 1928card index and document filing devicebase crossmember linear clutch
1674359Jun. 19, 1928filing devicebase crossmember linear clutch
3063567Nov. 13, 1962book rackbase crossmember linear clutch
5074420Dec. 24, 1991free-standing rack assemblybase crossmember partition fixed
2504466Apr. 18, 1950adjustable partitionbase crossmember partition intersliding position stop
1363138Dec. 21, 1920bookrackbase crossmember partition intersliding
4099624Jul. 11, 1978portable book rackbase crossmember partition position stop
2954878Oct. 4, 1960display rackbase crossmember partition positive lock
518573Apr. 17, 1894book rackbase crossmember partition sliding
1049726Jan. 7, 1913display rackbase crossmember partition sliding
2134606Oct. 25, 1938book rackbase crossmember partition sliding
3171542Mar. 2, 1965book rackbase crossmember partition sliding
3391793Jul. 9, 1968book rackbase crossmember partition sliding
3579710May 25, 1971traversable hardware in drivewaybase crossmember partition sliding
3780873Dec. 25, 1973automatic display racksbase crossmember partition sliding
4735324Apr. 5, 1988removable shelf separator and systembase crossmember partition sliding
5228578Jul. 20, 1993adjustable book shelfbase crossmember partition sliding
538500Apr. 30, 1895document filebase crossmember positive lock
3739918Jun. 19, 1973cloth bolt holderbase crossmember sliding
3747775Jul. 24, 1973holder for books and the likebase crossmember sliding
2140656Dec. 20, 1938book end constructionbase crossmember sliding spring loaded
2959293Nov. 8, 1960record holderbase crossmember sliding spring loaded
3800958Apr. 2, 1974bookrackbase crossmember sliding spring loaded
934148Sep. 14, 1909book restbase fixed
1379766May 31, 1921portable book holderbase fixed
1477634Dec. 18, 1923shipping case and display rackbase fixed
2364482Dec. 5, 1944book rackbase fixed
4569447Feb. 11, 1986book rackbase fixed
6578717Jun. 17, 2003economical desktop bookcasebase fixed
158751Jan. 12, 1875book racksbase fixed hinged
470050Mar. 1, 1892letter filebase fixed hinged
2111406Mar. 15, 1938collapsible portable book restbase fixed hinged
3389805Jun. 25, 1968self adjusting telescoping bookendsbase frictionless spring loaded
1750575Mar. 11, 1930sectional desk accessorybase interlock
1750576Mar. 11, 1930desk distributor setbase interlock
1772438Aug. 5, 1930office accessorybase interlock
2872046Feb. 3, 1959book endsbase interlock
4106735Aug. 15, 1978adjustable coil rackbase interlock
4637632Jan. 20, 1987holding devicebase interlock
4742922May 10, 1988book rack of selective capacitybase interlock
5183163Feb. 2, 1993interlocking continuous base bookendsbase interlock
6352162Mar. 5, 2002interlocking bookendsbase interlock
4358019Nov. 9, 1982book endbase interlock cornered
1663432Mar. 20, 1928bookrackbase linear clutch
1891420Dec. 20, 1932book rackbase linear clutch
5121681Jun. 16, 1992extendible book shelfbase partition crossmember position stop
2537565Jan. 9, 1951book unit rackbase partition fixed
4595105Jun. 17, 1986interlocking bookrackbase partition fixed
4944413Jul. 31, 1990book support apparatusbase partition fixed
793364Jun. 27, 1905book & paper rackbase partition interlock
3300057Jan. 24, 1967shelf organizerbase partition interlock
386674Jul. 24, 1888paper or bill filebase partition position stop
423647Mar 18, 1890bill filebase partition position stop
451729May 5, 1891paper or bill filebase partition position stop
593758Nov. 16, 1897portable book rackbase partition position stop
1257528Feb. 26, 1918file rackbase partition position stop
1415110May 9, 1922file rackbase partition position stop
1562275Nov. 7, 1925book supporting devicebase partition position stop
2658628Nov. 10, 1953adjustable shelf dividerbase partition position stop
2845188Jul. 29, 1958shelf and divider unitbase partition position stop
4759449Jul. 26, 1988interlocking expandable bookrackbase partition position stop
5072835Dec. 17, 1991tape cartridge holderbase partition sliding
431373Jul. 1, 1890book and paper rackbase position stop
774984Nov. 15, 1904book supportbase position stop
931362Aug. 17, 1909movable partition or book supportbase position stop
1621410Mar. 15, 1927supporting rackbase position stop
3425565Feb. 4, 1969adjustable storage shelf dividing structurebase position stop
4410093Oct. 18, 1983device for organizing papers and filesbase position stop
1401171Dec. 27, 1921binder rackbase position stop roller
1395825Nov. 1, 1921clamping devicebase recoiling strap
1876346Sep. 6, 1932book endsbase recoiling strap
2096634Oct. 19, 1937book endbase recoiling strap
2284849Jun. 2, 1942book endbase recoiling strap
2738881Mar. 20, 1956display and storage holderbase recoiling strap
3399782Sep. 3, 1968book endsbase recoiling strap
4135626Jan. 23, 1979constant force spring expandable clasp holderbase recoiling strap
4463854Aug. 7, 1984book support assemblybase recoiling wire
4606465Aug. 19, 1986expansible spring-loaded retention clampbase rolling strap
1704011Mar. 5, 1929book endbase scissor
2264086Nov. 25, 1941book support rackbase scissor
174262Feb. 29, 1876book rackbase sliding hinged
2264017Nov. 25, 1941bookrackbase sliding ratchet
2732082Jan. 24, 1956bookracksbase turning blocks
6354446Mar. 12, 2002space adjustable interlockingcrossmember partition interlock
758868May 3, 1904book supportcrossmember partition position stop
3142384Jul. 28, 1964adjustable bookshelves/bookendshanging channel partition sliding
3465896Sep. 9, 1969bookshelf and book supporthanging channel sliding
5871104Feb. 16, 1999adjustable support apparatushanging channel spring hinge
575832Jan. 26, 1897book supporthanging partition
2104864Jan. 11, 1938support for books and the likehanging partition
560851May 26, 1896book supporttext missing or illegible when filed
481505Aug. 23, 1892book supporthanging partition position lever
3450268Jun. 17, 1969bookshelf divider & holderhanging partition position lever
3889816Jun. 17, 1975book holder and separatorhanging partition position stop
2675922Apr. 20, 1954bookrackhanging partition sliding
2953258Sep. 20, 1960detachable self wedging shelf dividerhanging partition sliding
3202298Aug. 24, 1965bookendhanging partition sliding
5209357May 11, 1993hanging bookend devicehanging partition sliding
935560Sep. 28, 1909book supporthanging sliding
3489292Jan. 13, 1970book supporthanging sliding
5217122Jun. 8, 1993adjustable bookend apparatushanging sliding spring loaded
3784021Jan. 8, 1974bookrackpivoting interlock
4782960Nov. 8, 1988divider with resilient base engagementshelf channel partition sliding
436704Sep. 16, 1890book supportshelf channel positive lock
3121494Feb. 18, 1964book stop deviceshelf crossmember intersliding
1506204Aug. 26, 1924library book support & indexshelf crossmember partition fixed
660264Oct. 23, 1900divisible shelfshelf crossmember partition position stop
2688409Sep. 7, 1954adjustable partition for shelvesshelf crossmember partition sliding
3202290Aug. 24, 1965book care systemshelf individual depth alignment
5103987Apr. 14, 1992shelf engaging bookendtext missing or illegible when filed
657847Sep. 11, 1900book case or rackshelf partition position lever
712936Nov. 4, 1902book holdershelf partition position stop
1508610Sep. 16, 1924shelvingshelf partition position stop
1675269Sep. 13, 1923book supportshelf partition position stop
2905336Sep. 22, 1959partition for filling cabinet rocker compartmentshelf partition position stop
3269558Aug. 30, 1966compartmented shelf deviceshelf partition position stop
3905484Sep. 16, 1975flexible dividers for lateral shelf fillingshelf partition position stop
4858774Aug. 22, 1989shelving systemshelf partition position stop
5732832Mar. 31, 1998adjustable divider unit to support notebooksshelf partition position stop
161293Mar. 23, 1875book supportshelf partition positive lock
575294Jan. 12, 1897book support & label holdershelf partition sliding
679054Jul. 23, 1901shelf book supportshelf partition sliding
767037Aug. 9, 1904shelf book supportshelf partition sliding
1806642May 26, 1931bookstackshelf partition sliding
2884139Apr. 28, 1959snap-on bin dividershelf partition sliding
3285429Nov. 15, 1966shelf organizershelf partition sliding
3780876Dec. 25, 1973shelf dividershelf partition sliding
4327838May 4, 1982clip-on book endshelf partition sliding
5217124Jun. 8, 1993clip-on divider shelf deviceshelf partition sliding
5275297Jan. 4, 1994clip-on book support and label holdershelf partition sliding
2538908Jan. 23, 1951shelf dividershelf partition sliding spring lock
903769Nov. 10, 1908book support and adjustable shelf partitionshelf partition thumbscrew lock
668961Feb. 26, 1901book rackshelf scissor filler
608515Aug. 22, 1898book supportshelf scissor side filler
314437Mar. 24, 1885book holdershelf side filler
348382Aug. 31, 1886book holdershelf side filler
305863Sep. 30, 1884book suppportshelf sliding
355511Jan. 4, 1887book supportshelf sliding
388674Aug. 28, 1888book support for shelvesshelf sliding
504233Aug. 29, 1893book supportshelf sliding
781890Feb. 7, 1905book supportershelf sliding
3601258Aug. 24, 1971bookend for shelvesshelf sliding
452673May 19, 1891book supportshelf sliding hinged linear clutch
202959Apr. 30, 1878book supportsstandard bookend
502321Aug. 1, 1893adjustable shelf partitionstandard bookend
850977Apr. 23, 1907book supportstandard bookend
1370279Mar. 1, 1921folding book stopstandard bookend
1409136Mar. 7, 1922book endstandard bookend
1557419Oct. 13, 1925book endstandard bookend
1992487Feb. 26, 1935combined bookedn & picture framestandard bookend
2031698Feb. 25, 1936book endstandard bookend
2334251Nov. 16, 1943book endsstandard bookend
2661568Dec. 8, 1953book holderstandard bookend
2767856Oct. 23, 1956book supportstandard bookend
5036988Aug. 6, 1991bookend for metal shelvesstandard bookend
6334539Jun. 1, 2002bendable bookendstandard bookend
1598467Aug. 31, 1926book supportstandard bookend (Weeks)
3385450May 28, 1968bookendstandard bookend anti-tipping
2117667May 17, 1938book holderstandard bookend book holder
2117668May 17, 1938book holderstandard bookend book holder
1942456Jan. 9, 1934book holderstandard bookend book support
2151269Mar. 21, 1939display rack for booksstandard bookend book support
2807369Sep. 24, 1957support for reading matterstandard bookend book support
1795526Mar. 10, 1931book supportstandard bookend comered
1832884Nov. 24, 1931shelf follower and end supportstandard bookend friction block
3235092Feb. 15, 1966book supportstandard bookend friction block
1912229May 30, 1933book endstandard bookend hinged
186974Feb. 6, 1877book supportstandard bookend interlocking partition
3604564Jul. 8, 1969book endsstandard bookend magnetic
1396910Nov. 15, 1921book frame and label holderstandard bookend shelf
3971556Jul. 27, 1976combination book end and dumbell apparatusstandard bookend weighted
314436Mar. 24, 1885book holderwraparound rigid
1682053Aug. 28, 1928book supportwraparound weighted
base151current patents
shelf41no proprietary base
hanging16linear clutch concept
crossmember2text missing or illegible when filed
wraparound2
pivoting interlock1
standard bookend variation28
241

TABLE 3
Functional Descriptions
Description
base channel
base channel crossmember
base channel crossmember position stop
text missing or illegible when filed
base channel dovetailed sliding spring loaded
text missing or illegible when filed
base channel mechanical
base channel partition hinged stowed
text missing or illegible when filed
base channel partition position stop
base channel partition sliding
base channel partition sliding positive lock
base channel position stop
base channel sliding
base channel sliding position stop
base channel sliding press release
base channel sliding spring loaded
base channel spring loaded
base channel thumbscrew lock
base coil
base crossmember
base crossmember fixed
base crossmember intersliding
base crossmember intersliding hinged
base crossmember intersliding spring loaded
base crossmember linear clutch
base crossmember partition fixed
base crossmember partition intersliding position stop
base crossmember partition linear clutch
base crossmember partition position stop
base crossmember partition positive lock
base crossmember partition sliding
base crossmember positive lock
base crossmember sliding
base crossmember sliding spring loaded
base fixed
base fixed hinged
base frictionless spring loaded
base interlock
base interlock cornered
base linear clutch
base partition crossmember position stop
base partition fixed
base partition interlock
base partition position stop
base partition sliding
base position stop
base position stop roller
base recoiling strap
base recoiling wire
base rolling strap
base scissor
base sliding hinged
base sliding ratchet
base turning blocks
crossmember partition interlock
crossmember partition position stop
hanging channel partition sliding
hanging channel sliding
hanging channel spring hinge
hanging partition
text missing or illegible when filed
hanging partition position stop
hanging partition sliding
hanging sliding
hanging sliding spring loaded
pivoting interlock
shelf channel partition sliding
shelf crossmember intersliding
shelf crossmember partition fixed
shelf crossmember partition position stop
shelf crossmember partition sliding
shelf individual depth alignment
shelf linear cluctch text missing or illegible when filed
shelf partition position lever
shelf partition position stop
shelf partition sliding
shelf partition sliding spring lock
shelf partition thumbscrew lock
shelf scissor filler
shelf scissor side, filler
shelf side filler
shelf sliding
shelf sliding hinged linear clutch
standard bookend (Weeks)
standard bookend anti-tipping
standard bookend book support
standard bookend cornered
standard bookend friction block
standard bookend interlocking partition
standard bookend magnetic
standard bookend shelf
standard bookend weighted
wraparound rigid
wraparound weighted

TABLE 4
Functional Descriptors
DescriptionEchelon 1Echelon 2Echelon 3Echelon 4Echelon 5Reference
base channel crossmember position stopbasechannelcrossmemberposition stop3160282
base channel dovetailed linear clutchdovetailedlinear clutch5205420
base channel dovetailed sliding spring loadedslidingspring loaded1237101
base channel linear clutchlinear clutch1358853
base channel mechanicalmechanical1283259
base channel partition hinged stowedpartitionhingedstowed833887
base channel partition linear clutchlinear clutch1489804
base channel partition position stopposition stop2062802
base channel partition sliding positive lockslidingpositive lock3126892
base channel position stopposition stop1780872
base channel sliding position stopslidingposition stop2222190
base channel sliding press releasepress release5325792
base channel sliding spring loadedspring loaded153227
base channel spring loadedspring loaded497993
base channel thumbscrew lockthumbscrew lock525186
base coilcoil2076941
base crossmember fixedcrossmemberfixed3318453
base crossmember intersliding hingedinterslidinghinged1022150
base crossmember intersliding spring loadedspring loaded2545844
base crossmember linear clutchlinear clutch1660823
base crossmember partition fixedpartitionfixed5074420
base crossmember partition intersliding position stopinterslidingposition stop2504466
base crossmember partition linear clutchlinear clutch1363138
base crossmember partition position stopposition stop4099624
base crossmember partition positive lockpositive lock2954878
base crossmember partition slidingsliding518573
base crossmember positive lockpositive lock538500
base crossmember sliding spring loadedslidingspring loaded2140656
base fixed hingedfixedhinged158751
base frictionless spring loadedfrictionlessspring loaded3389805
base interlock corneredinterlockcornered4358019
base linear clutchlinear clutch1663432
base partition crossmember position stoppartitioncrossmemberposition stop5121681
base partition fixedfixed2537565
base partition interlockinterlock3300057
base partition position stopposition stop423647
base partition slidingsliding5072835
base position stop rollerposition stoproller1401171
base recoiling straprecoilingstrap1395825
base recoiling wirewire4463854
base rolling straprolling strap4606465
base scissorscissor1704011
base sliding hingedslidinghinged174262
base sliding ratchetratchet2264017
base turning blocksturning blocks2732082
crossmember partition interlockcrossmemberpartitioninterlock6354446
crossmember partition position stopposition stop758868
hanging channel partition slidinghangingchannelpartitionsliding3142384
hanging channel slidingsliding3465896
hanging channel spring hingespring hinge5871104
hanging partition linear clutchpartitionlinear clutch560851
hanging partition position stopposition stop3889816
hanging partition slidingsliding2675922
hanging sliding spring loadedslidingspring loaded5217122
plvoting interlockpivoting interlock3784021
shelf channel partition slidingshelfchannelpartitionsliding4782960
shelf crossmember interslidingcrossmemberintersliding3121494
shelf crossmember partition fixedpartitionfixed1506204
shelf crossmember partition position stopposition stop660264
shelf crossmember partition slidingsliding1506204
shelf individual depth alignmentindividual depth3202290
shelf linear clutchlinear clutch5103987
shelf partition position leverpartitionposition lever657847
shelf partition position stopposition stop712936
shelf partition sliding spring lockslidingspring lock767037
shelf partition thumbscrew lockthumbscrew lock903769
shelf scissor fillerscissorfiller668961
shelf scissor side fillerside filler608515
shelf side fillerside filler314437
shelf sliding linear clutch hingedslidinglinear clutchhinged305863
standard bookendstandard bookendvariation202959
wraparound rigidwraparoundrigid314436
wraparound weightedweighted1682053
base45
shelf15
hanging7
crossmember2
wraparound2
plvoting interlock1
standard bookend variation1
73

dateactivityOPR
26-Aug-03completed first design and prototypeRivers
2-Oct-03disclosed invention (Reed Sawyer witness)AIF
6-Oct-03disclosure filedUSPTO
8-Oct-03paid for preliminary appraisalAIF
15-Oct-03paid for preliminary searchRivers
17-Oct-03completed circular designRivers
10-Nov-03received letter of expectationAIF
13-Nov-03completed preliminary search resultsAIF
21-Nov-03submitted initial description to AIFRivers
24-Nov-03letter acknowledging initial submissionAIF
12-Dec-03submitted additional descriptionRivers
5-Jan-04returned first draft of applicationAIF
12-Jan-04submitted review of draft application to AIFRivers
2-Feb-04visited AIF & requested statusRivers
6-Feb-04AIF quoted $313.00 for changesAIF
12-Feb-04re-submitted review of draft application to AIFRivers
30-Mar-04visited AIF & requested statusRivers
31-Mar-04received phone call from AIFAIF
22-Apr-04returned second draft of applicationAIF

#NomenclatureWidthHeightThicknessDepthDiameterDisclosure Nomenclature
10Adjustable Width Bookend ConstructionTabletop Bookshelf
20Bookend Member (left or right)Bookend
21Vertically Oriented Rear Wall Panel48¾Back Plate
22Vertically Oriented Side Wall8¾End Plate
23Inwardly Projecting Support Member 5/16Peg, End Stop, Stop Post
24Elongated Slot¾¾Notch
30Spanner Unit
31Cross-Member¾Cross-Member
32End Cap MemberEnd Cap
33End Plate4¾
34Lower Support Leg¾¾
35Capture Arm¾¾
36Inwardly Facing Groove¼
40Holding BlockHolding Block
41Rear Block72
42Base Mat7 1/1612Base Mat
43Attaching Member7¾¾

PatentDateTitleConcept
1355511Jan. 4, 1887book supportbase with shelf sliders
2497993May 23, 1893automatic file holderbase channel linear clutch spring loaded
3518573Apr. 17, 1894book rackbase crossmember with sliding partition
4527897Oct. 23, 1894book supportbase channel with spring linear clutch
5583494Jun. 1, 1897book supportbase channel
6931362Aug. 17, 1909movable partition or book supportbase position locks
7945877Jan. 11, 1910desk book rackbase intersliding crossmember
81237101Aug. 14, 1917book holderbase channel dovetalled linear clutch spring loaded
91317550Sep. 30, 1919book rackbase intersliding crossmember
101336981Apr. 13, 1920book rackbase channel sliding friction
111363138Dec. 21, 1920bookrackbase crossmember with sliding lever lock
121379766May 31, 1921portable book holderbase with fixed sides
131675269Sep. 13, 1923book suppotshelves with position lock partitions
141598467Aug. 31, 1926book supportstandard bookend
151663432Mar. 20, 1928bookrackbase linear clutch
161674359Jun. 19, 1928filing devicebase crossmember with linear clutch
171674582Jun. 19, 1928bookholderbase channel with spring-loaded slide
181682060Aug. 28, 1928adjustable book holderbase intersliding crossmember
191750575Mar. 11, 1930sectional desk accessorybase interlock
201750576Mar. 11, 1930desk distributor setbase interlock
211768379Jun. 24, 1930tag and tag holding devicebase sliding plate
221772438Aug. 5, 1930office accessorybase interlock
231780872Nov. 4, 1930book rack or supportbase channel with positive stops
241898533Feb. 21, 1933paper filebase channel
252032086Feb. 25, 1936combination lamp stand and book rackbase sliding plate spring loaded
262134606Oct. 25, 1938book rackbase crossmember with sliding partition
272140656Dec. 20, 1938book end constructionbase crossmember sliding plates spring loaded
282206133Jul. 2, 1940book holderbase channel with linear clutch spring loaded
292264017Nov. 25, 1941bookrackbase ratchet lock
302294595Sep. 1, 1942adjustable book rackbase intersliding crosmembers
312545844Mar. 20, 1951automatically adjustable bookrackbase spring-loaded intersliding crossmember
322620929Dec. 9, 1952multipurpose book rackbase crossmember
332684765Jul. 27, 1954holder for books and the likebase channel with linear clutch
342911103Nov. 3, 1959device for supporting booksbase spring-loaded channel
353063567Nov. 13, 1962book rackbase crossmember with linear clutch
363126892Mar. 31, 1964adjustable partition for filesbase channel with friction slide partitions
373138262Jun. 23, 1964slotted bookshelf/supportbase channel with linear clutch
383142384Jul. 28, 1964adjustable bookshelves/bookendshanging channel with sliding partitions
393202298Aug. 24, 1965bookendhanging channel with sliding partitions
403301407Jan. 31, 1967shelf dividersbase channel
413318454May 9, 1967shelf with adjustable bookendsbase channel with crossmember
423389805Jun. 25, 1968self adjusting telescoping bookendsbase spring-loaded slide
433425565Feb. 4, 1969adjustable storage shelf dividing structurebase positions lock
44D241295Sep. 7, 1976base channel
454113108Sep. 12, 1978adjustable book holding devicebase channel with sliding friction
464682696Jul. 28, 1987adjustable bookrackbase channel with thumbscrew lock
475103987Apr. 14, 1992shelf engaging bookendtext missing or illegible when filed
485183163Feb. 2, 1993interlocking continuous base bookendsbase interlock
495205420Apr. 27, 1993adjustable & self locking book rack/supportbase channel dovetalled linear clutch
505228578Jul. 20, 1993adjustable book shelfbase crossmember with partitions
515325792Jul. 5, 1994bookshelf w/adjustable locking bookendsbase channel with positive lock
525740926Apr. 21, 1998bookshelf w/adjustable locking bookendsbase channel with thumbscrew lock
535871104Feb. 16, 1999adjustable support apparatuschannel and spring hinge
546352162Mar. 5, 2002interlocking bookendsbase interlock
current patents obtained from Denver Library
current patents
no proprietary base
text missing or illegible when filed
text missing or illegible when filed





 
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