Title:
DISPLAY DEVICE APERTURED FOR HOLDING SUPPORT HOOKS
United States Patent 3739919
Abstract:
A display device consisting of an elongated structure having apertures for the reception and retention of support hooks is manufactured as a molded one-piece element having two complementary sections which can be locked together. The design is such that the two portions are joined along one edge of each in a living hinge. The elongated structure can be stacked to increase the display area.
US Patent References:
Portable bracket pole
Frazelle - January 1962 - 3018898
Display device
Lind - March 1963 - 3080067
Method of making plastic containers
Gallagher - September 1964 - 3148103
Post-assembly molding
Bender - July 1966 - 3263008
Display stand and storage rack
Trogan - September 1967 - 3339752
Portable bracket pole
Frazelle - January 1962 - 3018898
Display device
Lind - March 1963 - 3080067
Method of making plastic containers
Gallagher - September 1964 - 3148103
Post-assembly molding
Bender - July 1966 - 3263008
Display stand and storage rack
Trogan - September 1967 - 3339752
Application Number:
05/159400
Publication Date:
06/19/1973
Filing Date:
07/02/1971
View Patent Images:
Export Citation:
Primary Class:
Other Classes:
211/194
International Classes:
A47F5/04; A47F5/08; A47F5/10; A47F7/00
Field of Search:
211/57,59,58,163,177 248/DIG.3 264/92,90 312/209,207,111 40/1,33
US Patent References:
| 3654716 | MOTOR OPERATED POLE SUPPORTED MOTION DISPLAY | April 1972 | Moss |
Primary Examiner:
Britts, Ramon S.
Claims:
What is claimed is
1. A molded hollow, elongated unitary display structure of flexible synthetic plastic, comprising two complementary elements each having wall means, each of said wall means having a first and a second edge, apertures by which parts to be displayed may be supported, living hinge means by which said first edges are joined, locking means proximate said second edges for interengaging said second edges, integral, complementary top-wall members and integral, complementary bottom wall members within said complementary elements, said complementary members having locking means and serving to reinforce said elements and to prevent relative motion transverse to said structure and parallel to the axis of said structure, said apertures having axes parallel to each other.
2. A structure as defined in claim 1, wherein each of said elements has at least one integral rib at corresponding positions intermediate said top and bottom wall members, said ribs having locking means and serving to reinforce said structure.
3. A structure as defined in claim 1, wherein said structure is cylindrical and has a first cylinder projecting axially beyond said top wall and a second cylinder projecting axially beyond said bottom wall, the diameters of said first and second cylinders being such that one cylinder would fit with friction within the other cylinder could they be joined, thereby making said structure nestable in an axial direction with other similar structures.
4. A structure as defined in claim 3, wherein said structure is cylindrical and is provided with means to prevent relative rotation between adjacent, nested structures.
1. A molded hollow, elongated unitary display structure of flexible synthetic plastic, comprising two complementary elements each having wall means, each of said wall means having a first and a second edge, apertures by which parts to be displayed may be supported, living hinge means by which said first edges are joined, locking means proximate said second edges for interengaging said second edges, integral, complementary top-wall members and integral, complementary bottom wall members within said complementary elements, said complementary members having locking means and serving to reinforce said elements and to prevent relative motion transverse to said structure and parallel to the axis of said structure, said apertures having axes parallel to each other.
2. A structure as defined in claim 1, wherein each of said elements has at least one integral rib at corresponding positions intermediate said top and bottom wall members, said ribs having locking means and serving to reinforce said structure.
3. A structure as defined in claim 1, wherein said structure is cylindrical and has a first cylinder projecting axially beyond said top wall and a second cylinder projecting axially beyond said bottom wall, the diameters of said first and second cylinders being such that one cylinder would fit with friction within the other cylinder could they be joined, thereby making said structure nestable in an axial direction with other similar structures.
4. A structure as defined in claim 3, wherein said structure is cylindrical and is provided with means to prevent relative rotation between adjacent, nested structures.
Description:
BACKGROUND OF THE INVENTION
In a display device where it is desired to display a large number of small items, it is desirable that the device have a large area for the support of such items, that it be inexpensive to manufacture and maintain, attractive in appearance, storable in a minimum of space and stackable to increase the display area. Such attributes have not hitherto been available in a single device, largely because of difficulties in design.
SUMMARY OF THE INVENTION
A device in accordance with the present invention comprises a one-piece structure of two complementary parts lockable together to form an elongated structure. Each part comprises an apertured wall reinforced at each end by an integral top or bottom wall, corresponding top or bottom walls being lockable together as the parts are locked together. The apertures are suitable for the reception and retention of support hooks intended to support items for display and sale. The two complementary parts are molded of a flexible synthetic plastic in one piece, the parts being joined together at one edge of each by a living hinge. Also, the structures have ends which nest.
Accordingly, an object of the present invention is a display device, attractive in appearance, suitable for the support of a plurality of items, consisting of two complementary parts lockable together and formed as a single unit.
Another object is a display device suitable for the display and sale of a plurality of items consisting of two complementary parts lockable together which are moldable in one piece in which the two parts are permanently joined by a living hinge.
Yet another object of the invention is a display device suitable for display and sale of a plurality of items where the device is stackable to increase the area available for the display and sale of items.
A further object of the invention is a display device suitable for the display and sale of a plurality of items which can be mounted on a central support rod.
Still other objects and advantages of the invention will in part be obvious and will in part be apparent from the specification.
The invention accordingly comprises an article of manufacture possessing the features, properties, and the relation of elements which will be exemplified in the article hereinafter described, and the scope of the invention will be indicated in the claims.
BRIEF DESCRIPTION OF THE DRAWING
For a fuller understanding of the invention, reference is had to the following description taken in connection with the accompanying drawing, in which:
FIG. 1 shows three display devices in accordance with the present invention stacked together and mounted on a support rod and base;
FIG. 2 is a display device in elevational view, partly broken away and partly in section;
FIG. 3 is a sectional view partly broken away, taken along the line 3--3 of FIG. 2;
FIG. 4 is a sectional view taken along the line 4--4 of FIG. 3 with the two parts of which the device is constructed spread apart and attached by a living hinge;
FIG. 5 is a sectional view taken along the lines 5--5 of FIG. 2; with the two parts spread apart as in FIG. 4;
FIG. 6 is an enlargement of two details of FIG. 4 showing a locking mechanism and a living hinge; and
FIG. 7 is an enlarged detail of FIG. 5 showing a locking mechanism.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
A display device, generally indicated by the reference numeral 11, in accordance with the present invention, is elongated in shape and has apertures 12 over its cylindrical side-wall 13. The apertures are intended for the reception and retention of support hooks 14a as shown in FIGS. 1 and 2. The support hooks serve to hold packages 14b, as indicated by the broken lines, for display and sale. Each display device is made in two complementary parts which lock together at corresponding edges. One pair of corresponding edges are permanently held together by living hinge 15 as shown in FIG. 3. For this type of construction, the device is preferably made of polypropylene. The other pair of corresponding edges join by means of a tongue and groove combination 16. This combination of a tongue 16a and a groove 16b is shown in more detail in FIG. 6.
The device is reinforced at top and bottom with fixed top-walls 17a and bottom walls 17b which are preferably integrally molded with the device. Each of these walls 17a and 17b is cut out in a half-circle 18 at its periphery 19, providing for reception of a support rod 21 (FIG. 1). The walls lock together by a mechanism consisting of a projection 23a wider at a median and narrower at its base and tip and a socket 23b having a narrow opening. In entering the socket 23b, the tip spreads the flexible lips 23c of the socket 23b. These spring back to hold the projection 23b at its narrower base as the projection seats in the socket.
The locking mechanisms 23a and 23b not only hold the top and bottom walls 17a and 17b from spreading apart in the planes thereof, but also prevent them from moving apart axially. In general, the locking mechanisms 23a and 23b of the top and bottom walls are sufficient to prevent relative axial displacement of the two parts; consequently, the locking mechanisms of the ribs need only ensure against displacement in the plane of the ribs 22, so that a simpler locking mechanism 24 (FIG. 6) suffices. This locking mechanism 24 consists of two flexible projections which are displaced as the parts are brought together and then cam over each other holding the parts firmly together.
To make it possible to stack the device 11, a cylinder 27 (FIGS. 2 and 3) is provided at one end of the device. Similarly, periphery 26 extends beyond the bottom wall 17b forming a cup to receive the cylinder 27 which is of diameter such that the cylinder 27 fits snugly within the side wall 13.
To prevent relative rotation between adjacent devices, wall 13 has a boss 28 (FIG. 2) which fits into notch 29 (FIG. 3).
In order to be able to withdraw the device from molds, it is necessary that the axes of the apertures all be essentially parallel. The remainder of the design of the device except for the locking mechanisms and the living hinge is also such that no difficulty is encountered in removing the finished parts from molds. Such undercuts as are present in the locking mechanisms and the living hinge are sufficiently small so that the flexibility of the plastic from which the device is molded is sufficient to provide for withdrawal of the pieces. It is for this reason that polypropylene is a preferred material.
It will thus be seen that the objects set forth above, among those made apparent from the preceding description, are efficiently attained and, since certain changes may be made in the above product without departing from the spirit and scope of the invention, it is intended that all matter contained in the above description and shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.
In a display device where it is desired to display a large number of small items, it is desirable that the device have a large area for the support of such items, that it be inexpensive to manufacture and maintain, attractive in appearance, storable in a minimum of space and stackable to increase the display area. Such attributes have not hitherto been available in a single device, largely because of difficulties in design.
SUMMARY OF THE INVENTION
A device in accordance with the present invention comprises a one-piece structure of two complementary parts lockable together to form an elongated structure. Each part comprises an apertured wall reinforced at each end by an integral top or bottom wall, corresponding top or bottom walls being lockable together as the parts are locked together. The apertures are suitable for the reception and retention of support hooks intended to support items for display and sale. The two complementary parts are molded of a flexible synthetic plastic in one piece, the parts being joined together at one edge of each by a living hinge. Also, the structures have ends which nest.
Accordingly, an object of the present invention is a display device, attractive in appearance, suitable for the support of a plurality of items, consisting of two complementary parts lockable together and formed as a single unit.
Another object is a display device suitable for the display and sale of a plurality of items consisting of two complementary parts lockable together which are moldable in one piece in which the two parts are permanently joined by a living hinge.
Yet another object of the invention is a display device suitable for display and sale of a plurality of items where the device is stackable to increase the area available for the display and sale of items.
A further object of the invention is a display device suitable for the display and sale of a plurality of items which can be mounted on a central support rod.
Still other objects and advantages of the invention will in part be obvious and will in part be apparent from the specification.
The invention accordingly comprises an article of manufacture possessing the features, properties, and the relation of elements which will be exemplified in the article hereinafter described, and the scope of the invention will be indicated in the claims.
BRIEF DESCRIPTION OF THE DRAWING
For a fuller understanding of the invention, reference is had to the following description taken in connection with the accompanying drawing, in which:
FIG. 1 shows three display devices in accordance with the present invention stacked together and mounted on a support rod and base;
FIG. 2 is a display device in elevational view, partly broken away and partly in section;
FIG. 3 is a sectional view partly broken away, taken along the line 3--3 of FIG. 2;
FIG. 4 is a sectional view taken along the line 4--4 of FIG. 3 with the two parts of which the device is constructed spread apart and attached by a living hinge;
FIG. 5 is a sectional view taken along the lines 5--5 of FIG. 2; with the two parts spread apart as in FIG. 4;
FIG. 6 is an enlargement of two details of FIG. 4 showing a locking mechanism and a living hinge; and
FIG. 7 is an enlarged detail of FIG. 5 showing a locking mechanism.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
A display device, generally indicated by the reference numeral 11, in accordance with the present invention, is elongated in shape and has apertures 12 over its cylindrical side-wall 13. The apertures are intended for the reception and retention of support hooks 14a as shown in FIGS. 1 and 2. The support hooks serve to hold packages 14b, as indicated by the broken lines, for display and sale. Each display device is made in two complementary parts which lock together at corresponding edges. One pair of corresponding edges are permanently held together by living hinge 15 as shown in FIG. 3. For this type of construction, the device is preferably made of polypropylene. The other pair of corresponding edges join by means of a tongue and groove combination 16. This combination of a tongue 16a and a groove 16b is shown in more detail in FIG. 6.
The device is reinforced at top and bottom with fixed top-walls 17a and bottom walls 17b which are preferably integrally molded with the device. Each of these walls 17a and 17b is cut out in a half-circle 18 at its periphery 19, providing for reception of a support rod 21 (FIG. 1). The walls lock together by a mechanism consisting of a projection 23a wider at a median and narrower at its base and tip and a socket 23b having a narrow opening. In entering the socket 23b, the tip spreads the flexible lips 23c of the socket 23b. These spring back to hold the projection 23b at its narrower base as the projection seats in the socket.
The locking mechanisms 23a and 23b not only hold the top and bottom walls 17a and 17b from spreading apart in the planes thereof, but also prevent them from moving apart axially. In general, the locking mechanisms 23a and 23b of the top and bottom walls are sufficient to prevent relative axial displacement of the two parts; consequently, the locking mechanisms of the ribs need only ensure against displacement in the plane of the ribs 22, so that a simpler locking mechanism 24 (FIG. 6) suffices. This locking mechanism 24 consists of two flexible projections which are displaced as the parts are brought together and then cam over each other holding the parts firmly together.
To make it possible to stack the device 11, a cylinder 27 (FIGS. 2 and 3) is provided at one end of the device. Similarly, periphery 26 extends beyond the bottom wall 17b forming a cup to receive the cylinder 27 which is of diameter such that the cylinder 27 fits snugly within the side wall 13.
To prevent relative rotation between adjacent devices, wall 13 has a boss 28 (FIG. 2) which fits into notch 29 (FIG. 3).
In order to be able to withdraw the device from molds, it is necessary that the axes of the apertures all be essentially parallel. The remainder of the design of the device except for the locking mechanisms and the living hinge is also such that no difficulty is encountered in removing the finished parts from molds. Such undercuts as are present in the locking mechanisms and the living hinge are sufficiently small so that the flexibility of the plastic from which the device is molded is sufficient to provide for withdrawal of the pieces. It is for this reason that polypropylene is a preferred material.
It will thus be seen that the objects set forth above, among those made apparent from the preceding description, are efficiently attained and, since certain changes may be made in the above product without departing from the spirit and scope of the invention, it is intended that all matter contained in the above description and shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.