Title:
Shutter-like covering and hardware for architectural opening
Document Type and Number:
Kind Code:
A1

Abstract:
A modular shutter blind system for a window blind application. A window blind is made to look like a window shutter by having airfoil shaped slats which traverse in toward the window when the blind is tilted closed and traverse away from the window and toward the room when the blind is tilted open in order to give the blind the clearance needed to tilt open while making it appear as if the window frame is the shutter blind frame. This traverse motion of the slats is accomplished by having the tilting axis along the centroid of the head rail move in and out while the blind is tilted closed or open respectively.

Representative Image:
Inventors:
Colson, Wendell B. (Weston, MA, US)
Anthony, James M. (Denver, CO, US)
Anderson, Richard N. (Whitesville, KY, US)
Haarer, Steven R. (Whitesville, KY, US)
Fraser, Donald E. (Owensboro, KY, US)
Null, Robert A. (Arvada, CO, US)
      Plaque It!

Sponsored by:
Flash of Genius
Application Number:
10/197674
Publication Date:
01/23/2003
Filing Date:
07/16/2002
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Primary Class:
International Classes:
(IPC1-7): E06B009/30
Attorney, Agent or Firm:
INTELLECTUAL PROPERTY DEPARTMENT,DORSEY & WHITNEY, LLP (370 SEVENTEENTH STREET, DENVER, CO, 80202-5647, US)
Claims:

What is claimed is:



1. A covering for architectural openings, comprising: a head rail having first and second ends and defining a longitudinal axis and first and second lateral edges; at least a first bracket for mounting said head rail to the architectural opening, said first bracket including first and second slots; a first pin, mounted to a first end of said head rail and substantially aligned with said longitudinal axis, said first pin being received in said first slot; and a second pin, mounted to the first end of said head rail and near one of said lateral edges, said second pin being received in said second slot, wherein the shifting of said pins in their respective slots defines a tilted open position and a first tilted closed position, with said first pin located closer to said second slot in the first tilted closed position than in the tilted open position.

2. A covering for architectural openings as recited in claim 1, wherein said second slot defines an arc, which lies on an imaginary circle, and said first slot defines a portion of a radius of said circle.

3. A covering for architectural openings, comprising: a head rail having first and second ends and defining a longitudinal axis and first and second lateral edges; at least a first bracket for mounting said head rail to the architectural opening, said first bracket including means for shifting said head rail away from said bracket as the head rail is tilted to an open position and for shifting said head rail toward said bracket as the head rail is tilted to a closed position.

4. A covering for an architectural opening, comprising: a head rail defining a longitudinal axis, said head rail having front and rear edges, substantially parallel to said longitudinal axis, and first and second lateral ends; at least a first bracket for mounting said head rail to the architectural opening, said first bracket including means for shifting said head rail forwardly relative to said bracket as the head rail is tilted to an open position and for shifting said head rail rearwardly relative to said bracket as the head rail is tilted to a closed position.

5. A covering for an architectural opening as recited in claim 4, wherein said head rail has a centroid and said longitudinal axis coincides with the centroid of said head rail, and including means for pivoting said head rail along said centroid as said head rail is tilted from an open position to a closed position.

6. A covering for an architectural opening as recited in claim 5, including means for causing said centroid of said head rail to travel in a substantially straight line as said head rail is tilted from an open position to a closed position.

7. A covering for architectural openings, comprising a head rail; a tilt bar pivotably mounted to said head rail; a lift cord extending along said head rail and along said tilt bar; and a handle slidably mounted on said tilt bar and engaging said lift cord for raising and lowering the covering.

8. A covering for architectural openings, comprising: a head rail defining forward and rear lateral edges and a longitudinal pivot axis; a bracket for pivotably mounting said head rail in the architectural opening; forward and rear tilt cords; forward and rear mounts which are received in the forward and rear lateral edges of said head rail, each of said mounts defining a guide path for a tilt cable and a guide path for a lift cord.

Description:

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This utility application claims priority to U.S. provisional patent application No. 60/306,049, filed Jul. 16, 2001. This application is also related to a PCT patent application No. ______ , concurrently filed herewith on Jul. 16, 2002, for A Shutter-Like Covering for Architectural Openings, which claims priority to U.S. provisional patent application No. 60/305,947, filed Jul. 16, 2001 and is hereby incorporated by reference in its entirety.

BACKGROUND OF THE INVENTION

[0002] The present invention relates to coverings for architectural openings, and more specifically to horizontal blinds, such as Venetian blinds designed to emulate the look of window shutters.

[0003] Venetian Blinds:

[0004] Typically, a Venetian blind has a fixed top head rail which both supports the blind and hides the mechanisms used to raise and lower or open and close the blind. The raising and lowering is done by a lift cord attached to the bottom rail (or bottom slat). Thus, when raising a blind, at first only the bottom rail is being raised and the amount of force required is small. As the bottom rail is raised further, more of the slats are stacked on top of the bottom rail and thus progressively more force is required to continue to raise the blind. The largest amount of force will be required at the very top when literally the entire blind is being raised. In contrast, when the blind is fully lowered, only the bottom rail is supported by the lift cord. The rest of the weight of the blind is supported by the ladder tape which has tilt cables running to, and supported by, the head rail.

[0005] The slats that are supported from the head rail may be allowed to tilt so as to open the blind to allow a maximum of light through the blind, or to close the blind with the room side down (the edge of the slats which is closest to the room is facing down, which means that the other edge of the slats, the edge which is closest to the window or the wall, will be facing up), or close the blind with the room side up. In some of the prior art, such as U.S. Pat. No. 2,116,356 Laborda , U.S. Pat. No. 2,218,508 Gentile , U.S. Pat. No. 2,244,094 Wread , U.S. Pat. No. 1,952,739 Weisfeld , and U.S. Pat. No. 2,105,082 Johnson , the head rail of the blind does pivot in order to tilt the blind. However, in these designs, the head rail does not hide the mechanisms used to raise and lower or open and close the blind. Also, as will be discussed later, in these references in which the head rail pivots, it pivots along a fixed axis, typically along the centroid of the head rail.

[0006] In order to accommodate the raising and lowering of the blind, lift cords are generally present in a Venetian blind, hanging off of one end of the head rail. In order to facilitate the raising of the blind stack, the lift cords generally have at least a 1-1 ratio of travel of the lift cord to travel of the blind stack. A higher ratio may be used (such as a 2-1 ratio) so that the lift cord travels twice as far as the blind stack so that the effort required to raise the blind stack is approximately one half the effort that would be required if the ratio were 1-1. Ratios lower than 1-1 are not generally used, because the effort required to raise the stack becomes too large to be comfortable and convenient for the user. Tilt cables or tilt wands may also be present to accommodate the tilting open or tilting closed of the blind stack.

[0007] Shutters:

[0008] Shutters typically have louvers (which are the equivalent of the slats in a blind), but these louvers cannot be raised or lowered. They can only be tilted open or closed. In many instances, the shutter frame may be hinged so that the entire shutter may be swung open or closed. There are no cables or cords hanging off a shutter. The tilting of the louvers is typically accomplished by a tilt bar which is pivotally connected to every louver. Each of the louvers tilts along a fixed axis, typically along the centroid of the louver. In shutters, the louvers are mounted on a frame. The horizontal pieces of the frame are called rails, and the vertical pieces of the frame are called stiles. The stiles attach to the rails to enclose the louvers. There is a clearance requirement between the shutter and the window in order for the louvers to have room to tilt open. This clearance is not noticeable, even when the shutter is tilted closed, because the stiles are always framing the louvers.

SUMMARY OF THE INVENTION

[0009] The ‘louvers’ of the blind of the present invention are of similar shape to the louvers of a shutter. Even the head rail and the bottom rail of this blind are very similar to the balance of the louvers of this shutter blind. However, the shutter blind of this present invention does not have the stiles of a shutter. Thus, what really completes the illusion to help make this shutter blind system look like a shutter is the fact that all the louvers of this shutter blind, including the head rail and the bottom rail, look essentially the same, and that the entire blind stack (including the pivoting head rail and the pivoting bottom rail) pivots in unison along the elongated pivot at the centroid of each of the louvers. In addition, the mounting arrangement provides for the elongated pivot axis of each louver to traverse inwardly toward the window when the louvers tilt closed, and outwardly, away from the window, when the louvers tilt open, so that the window frame itself creates the appearance of the frame that would be provided by the rails and stiles of a traditional shutter. Thus, even without traditional shutter rails and stiles, the shutter blind system of the present invention is effectively able to give the illusion that the blind is a shutter, with the window frame taking the place of the shutter frame.

[0010] The louvers tilt by virtue of the fact that they are suspended off of a tilting head rail, which, in some of the embodiments described, tilts by means of a tilt bar. The lift cords are hidden inside the head rail, and they are hidden within and terminate inside of the tilt bar, so they are not visible to the user. In the event that a lift cord is visible and accessible to the user in an embodiment of the present invention, this is a single lift cord rather than the multiple cords usually available in the prior art.

[0011] Another objective of the present invention is to provide a shutter blind system which is so light that the raising or lowering of the blind stack may be readily accomplished even at less than a 1-1 ratio of travel of the lift cord to travel of the blind stack. However, the same shutter blind system may be readily modified, (by means of springs or spring motors, or even by using transmissions and/or lift stations as described in our U.S. patent application Ser. No. 60/125,776 Counterbalanced Transport System for Blinds , which is hereby incorporated by reference) to work even when using much heavier shutter blind louvers which would otherwise necessitate a higher than 1-1 ratio of travel of the lift cord to travel of the blind stack.

[0012] Thus, the present invention puts forth a complete ‘shutter blind’ system with a number of components working together to make this complete shutter blind system. However, a particular embodiment of a shutter blind system made in accordance with the present invention may not necessarily incorporate all the components disclosed in this application. For instance, one embodiment may have the capability to both tilt the blind open and closed and to raise and lower the blind, while another embodiment may only allow tilting of the blind, with no capability to raise or lower the blind. Furthermore, individual components disclosed in this application may be useful and may be used individually or in combination with other components when putting together a blind other than the shutter blind disclosed in this application. By the same token, individual components disclosed in our previous U.S. patent application Ser. No. 60/125,776 ‘Counterbalanced Transport System for Blinds’ may be incorporated to enhance the performance of the shutter blind of the present invention, as discussed earlier.

[0013] In an effort to logically and methodically cover the material of this invention, typical preferred embodiments of complete shutter blind systems made in accordance with this invention are first described in general terms in order to identify the components which make up these embodiments. Then, each component of the preferred embodiment is described in detail. Then, different embodiments of the various particular components are described.

BRIEF DESCRIPTION OF THE DRAWINGS:

[0014] FIG. 1A is a partially broken away perspective view of a first embodiment of a shutter blind made in accordance with the present invention, including spring loaded end caps on the head rail, sliding slot mounting brackets, ball and socket attachment of the tilt bar to the head rail, a hand control for raising of the louvers, and a single tilt bar;

[0015] FIG. 1B is an exploded view of the shutter blind of FIG. 1A ;

[0016] FIG. 2A is a partially broken away perspective view of a second embodiment of a shutter blind made in accordance with the present invention, including a different type of mounting bracket;

[0017] FIG. 2B is an exploded view of the shutter blind of FIG. 2A ;

[0018] FIG. 3A is a partially broken away perspective view of a third embodiment of a shutter blind made in accordance with the present invention, including double tilt bars where the tilt bars conceal the lift cords and the tilt cables;

[0019] FIG. 3B is an exploded view of the shutter blind of FIG. 3A ;

[0020] FIG. 4A is a partially broken away perspective view of a fourth embodiment of a shutter blind made in accordance with the present invention, including a different type of pivot linkage, and a different type of end cap;

[0021] FIG. 4B is an exploded view of the shutter blind of FIG. 4A ;

[0022] FIG. 5A is a partially broken away perspective view of a fifth embodiment of a shutter blind made in accordance with the present invention, including double tilt bars where the tilt bars conceal the lift cords and the tilt cables, and a provisional manual lift for raising or lowering the blind;

[0023] FIG. 5B is an exploded view of the shutter blind of FIG. 5A ;

[0024] FIG. 5C is a partially broken away perspective view of the same shutter blind as FIG. 5A but including a custodial wand;

[0025] FIG. 5D is an expanded close-up view of the custodial wand of FIG. 5C ;

[0026] FIG. 5E is a partially broken away perspective view of a sixth embodiment of a shutter blind made in accordance with the present invention, which is very similar to the first embodiment of FIG. 1A except the tilt bar 80 is shifted to the very end of the head rail so that a slightly different end cap, top bar attachment, top end cap, and bottom pivot bracket are used;

[0027] FIG. 5F is an exploded perspective view of the shutter blind of FIG. 5E ;

[0028] FIG. 6A is an end view of the head rail shown in FIGS. 1 through 5 ;

[0029] FIG. 6B is a broken away perspective view of the head rail of FIG. 6A ;

[0030] FIG. 7A is an end view of an alternate head rail which may be used in any of the shutter blind system embodiments of FIGS. 1 - 5 ;

[0031] FIG. 7B is a broken away perspective of the head rail of FIG. 7A ;

[0032] FIG. 8 is a broken away plan view of the head rail of FIGS. 1 - 5 ;

[0033] FIG. 9A is an end view of an alternate three-piece head rail which may be used instead of the one piece head rail shown in FIGS. 1 - 5 ;

[0034] FIG. 9B is a broken away perspective view of the three-piece head rail of FIG. 9A ;

[0035] FIG. 9C is a broken away, exploded view of the head rail of FIG. 9B ;

[0036] FIG. 10A is an enlarged end view of one of the pieces of the three-piece head rail of FIG. 9C ;

[0037] FIG. 10B is a broken away perspective view of the head rail piece of FIG. 10A ;

[0038] FIG. 11A is an enlarged broken away perspective view of the connecting channel of the three-piece head rail of FIG. 9A ;

[0039] FIG. 11B is an enlarged end view of one of the connecting channels of FIG. 11A ;

[0040] FIG. 12A is an end view of a second alternate two-piece head rail which may be used instead of the one piece head rail shown in FIGS. 1 through 5 ;

[0041] FIG. 12B is a broken away perspective view of the two-piece head rail of FIG. 12A ;

[0042] FIG. 13A is an end view of a third alternate two-piece head rail which may be used instead of the one piece head rail shown in FIGS. 1 through 5 ;

[0043] FIG. 13B is a broken away perspective view of the two-piece head rail of FIG. 13A ;

[0044] FIG. 14A is an end view of a fourth alternate head rail, designed to hold weights for making a weighted head rail, which may be used instead of the one piece head rail shown in FIGS. 1 through 5 ;

[0045] FIG. 14B is a broken away perspective view of the head rail of FIG. 14A ;

[0046] FIG. 15A is a perspective view of unitary weights which may be used in the head rail of FIGS. 14A and 14B ;

[0047] FIG. 15B is an enlarged end view of one of the unitary weights of FIG. 15A ;

[0048] FIG. 16A is a perspective view of the spring loaded head rail end cap shown in FIG. 1 ;

[0049] FIG. 16B is an exploded view of the end cap of FIG. 16A ;

[0050] FIG. 17A is a perspective view of the end cap housing of the end cap of FIG. 16A ;

[0051] FIG. 17B is a perspective view of the opposite side of the end cap housing of FIG. 17A ;

[0052] FIG. 17C is a section view along the line 17 C- 17 C of FIG. 17D ;

[0053] FIG. 17D is an end view of the end cap housing shown in FIG. 17 B, but rotated 180 degrees;

[0054] FIG. 17E is an end view of the end cap housing of FIG. 17A ;

[0055] FIG. 18A is a perspective view of one of the spring loaded pins of the end cap of FIG. 16A ;

[0056] FIG. 18B is an opposite end perspective view of the spring loaded pin of FIG. 18A ;

[0057] FIG. 18C is a section view along the line 18 C- 18 C of FIG. 18B ;

[0058] FIG. 19 is a perspective view of one of the springs of the end cap of FIG. 16A ;

[0059] FIG. 20A is a perspective view of a fixed pin end cap which may be used instead of one of the spring loaded end caps in a shutter blind system such as the system shown in FIG. 1 ;

[0060] FIG. 20B is an opposite end perspective view of the fixed pin end cap of FIG. 20A ;

[0061] FIG. 20C is a perspective view of the fixed pin end cap of FIG. 20B but rotated 90 degrees;

[0062] FIG. 20D is a bottom view of the fixed pin end cap of FIG. 20A ;

[0063] FIG. 20E is an end view of the end cap of FIG. 20A ;

[0064] FIG. 20F is a top view of the fixed pin end cap of FIG. 20A ;

[0065] FIG. 21 is a section view of an alternate, floating pin end cap which may be used instead of the spring loaded end caps in a shutter blind system such as the system shown in FIG. 1 ;

[0066] FIG. 22A is a plan view of the floating pin of the floating pin end cap of FIG. 21 ;

[0067] FIG. 22B is the same view as FIG. 22A but with the floating pin rotated 90 degrees;

[0068] FIG. 23A is a perspective view of the cord glide shown in FIG. 1B ;

[0069] FIG. 23B is an exploded view of the cord glide of FIG. 23A ;

[0070] FIG. 24A is a section view along the line 24 A- 24 A of FIG. 24 B, but with the routing of the lift cord and the tilt cable shown;

[0071] FIG. 24B is a bottom view of the cord glide of FIG. 23A ;

[0072] FIG. 24C is a section view along the line 24 C- 24 C of FIG. 24A ;

[0073] FIG. 24D is a section view of the cord glide of FIG. 23A mounted on the head rail as shown in FIG. 1 A, showing the routing of the lift cord when the louver is in the tilted open position;

[0074] FIG. 24E is a section view, identical to that of FIG. 24D but showing the routing of the lift cord when the louver is in the tilted closed position;

[0075] FIG. 25A is a section view along the line 25 A- 25 A of FIG. 25 B, but rotated 180 degrees;

[0076] FIG. 25B is a bottom view of the glide cord housing cover of FIG. 23B ;

[0077] FIG. 26A is a perspective view of the multi-bar bottom rail attachment of FIG. 3B ;

[0078] FIG. 26B is a perspective view of the multi-bar bottom rail attachment of FIG. 26 A, but rotated 90 degrees;

[0079] FIG. 26C is a bottom perspective view of the multi-bar bottom rail attachment of FIG. 26B ;

[0080] FIG. 26D is section view, along the line 26 D- 26 D of FIG. 26A ;

[0081] FIG. 27A is a perspective view of the operator bar top attachment assembly shown in FIG. 1B ;

[0082] FIG. 27B is an exploded view of the operator bar top attachment assembly of FIG. 27A ;

[0083] FIG. 28A is a plan view of the operator bar top attachment assembly of FIG. 27A ;

[0084] FIG. 28B is a section view along the line 28 B- 28 B of FIG. 28A ;

[0085] FIG. 28C is a section view along the line 28 C- 28 C of FIG. 28A ;

[0086] FIG. 29A is a perspective view of the operator bar top attachment assembly cover of FIG. 27B ;

[0087] FIG. 29B is a bottom perspective view of the operator bar top attachment assembly cover of FIG. 29A ;

[0088] FIG. 30 is a section view of the head rail, operator bar top attachment, and top end cap of FIG. 2A ;

[0089] FIG. 31 is an exploded, perspective view of the components of FIG. 30 ;

[0090] FIG. 32A is a perspective view of the operator bar top attachment assembly of FIG. 30 ;

[0091] FIG. 32B is an exploded perspective view of the operator bar top attachment assembly of FIG. 32A ;

[0092] FIG. 33 is a section view along the line 33 - 33 of FIG. 32A ;

[0093] FIG. 34A is a perspective view of the ball-and-socket type operator top bar attachment assembly shown in FIG. 1A ;

[0094] FIG. 34B is the same view as FIG. 34A but seen from the opposite end of the assembly;

[0095] FIG. 35A is a perspective view of the “ball” part of the ball-and-socket type operator top bar attachment assembly of FIG. 34A ;

[0096] FIG. 35B is a section view along the line 35 B- 35 B of FIG. 35A ;

[0097] FIG. 36A is a perspective view of the “socket” part of the ball-and-socket type operator top bar attachment assembly of FIG. 34A ;

[0098] FIG. 36B is also a perspective view of the “socket” part of the ball-and-socket type operator top bar attachment assembly of FIG. 34 A, but seen from the opposite end;

[0099] FIG. 37 is a section view, identical to that of FIG. 38 , except that it shows the relative position of the ball and of the socket parts in order to initiate the assembly;

[0100] FIG. 38 is a section view along the line 38 - 38 of FIG. 34A ;

[0101] FIG. 38A is a section view of the head rail, operator bar top attachment, top end cap, tilt bar, and hand control of FIG. 1 A, showing the routing of the lift cord;

[0102] FIG. 38B is an exploded, perspective view of another embodiment of the top end cap which is similar to the top end cap of FIG. 38A ;

[0103] FIG. 38C is an assembled, perspective view of the end cap of FIG. 38B ;

[0104] FIG. 38D is a perspective view of the ferrule which is part of the end cap of FIG. 38B ;

[0105] FIG. 38E is an exploded, perspective view of the top end cap of FIG. 38B together with another embodiment of an operator top bar attachment and end cap to accommodate mounting of the operator bar at one end of the head rail, as shown in FIGS. 5E and 5F ;

[0106] FIG. 38F is an assembled, perspective view of the end cap, top bar attachment, and top end cap of FIG. 38E ;

[0107] FIG. 38G is a perspective view of the top bar attachment housing which is part of the end cap and top bar attachment of FIG. 38E ;

[0108] FIG. 38H is a section along line 38 H- 38 H of FIG. 38F ;

[0109] FIG. 39A is a partially exploded, partially broken away, perspective view of the operator bottom bar, adjustable attachment assembly of FIG. 3B ;

[0110] FIG. 39B is the same view as FIG. 39 A, but with the parts assembled;

[0111] FIG. 39C is the same view as FIG. 39 B, but adjusted to a different position;

[0112] FIG. 39D is a partially broken away section view of the operator bottom bar, adjustable attachment assembly of FIG. 39B assembled into the operator bar at one end and into the bottom rail via a multi-bar bottom attachment at the other end;

[0113] FIG. 40A is a section view along the line 40 A- 40 A of FIG. 39A ;

[0114] FIG. 40B is a perspective view of the adjustable attachment housing of FIG. 39A ;

[0115] FIG. 41A is a perspective view of the operator bottom bar cap of FIG. 39A ;

[0116] FIG. 41B is a bottom perspective view of the operator bottom bar cap of FIG. 41A ;

[0117] FIG. 41C is a bottom view of the operator bottom bar cap of FIG. 41A ;

[0118] FIG. 41D is a section along the line 41 D- 41 D of FIG. 41A ;

[0119] FIG. 41E is a top plan view of the operator bottom bar cap of FIG. 41A ;

[0120] FIG. 42A is a perspective view of a second embodiment of an operator bottom bar, adjustable attachment assembly which may be used instead of the assembly shown in FIG. 39C ;

[0121] FIG. 42B is the same view as FIG. 42 A, but shown in the unlocked position;

[0122] FIG. 42C is a sectional view along the line 42 C- 42 C of FIG. 42D ; FIG. 42D is a perspective view of the bottom end cap housing of the operator bottom bar, adjustable attachment assembly of FIG. 42A ; FIG. 42E is a perspective view of the lever of the operator bottom bar, adjustable attachment assembly of FIG. 42A ; FIG. 43A is a section view along the line 43 A- 43 A of FIG. 42B ; FIG. 43B is a top plan view of FIG. 42B ; FIG. 44A is a section view along the line 44 A- 44 A of FIG. 42A ; FIG. 44B is a top plan view of FIG. 42A ; FIG. 45 is an end view of the operator bar or tilt bar extrusion of FIGS. 1 - 5 ;

[0123] FIG. 46A is a broken away, perspective view of the top portion of the tilt bar extrusion of FIG. 45 ;

[0124] FIG. 46B is another broken away, perspective view of the top end of the tilt bar extrusion, similar to the view of FIG. 46A but showing the other side of the extrusion;

[0125] FIG. 46C is a side view of the tilt bar of FIG. 45 ;

[0126] FIG. 47A is a perspective view of a mounting bracket as shown in FIG. 2B ;

[0127] FIG. 47B is the same mounting bracket as FIG. 47A but showing the back side of the bracket;

[0128] FIG. 47C is a side view of the mounting bracket of FIG. 47A ;

[0129] FIG. 48A is an exploded perspective view of a two-piece mounting bracket which may be used instead of the mounting bracket shown in FIG. 47A ;

[0130] FIG. 48B is an assembled perspective view of the two-piece mounting bracket of FIG. 48A ;

[0131] FIG. 49 is an enlarged perspective view of another two-piece mounting bracket that could be used instead of the bracket of FIG. 47 A, the bracket having an open slot in front to insert a fixed-end end cap;

[0132] FIG. 50A is a perspective view of a sliding-slot mounting bracket as shown in FIG. 1 B, with the sliding slot in the extended position, corresponding to when the louvers are in the open position;

[0133] FIG. 50B is the same view as in FIG. 50 A, but with the sliding slot in the retracted position, corresponding to when the louvers are in the tilted closed position;

[0134] FIG. 50C is an exploded perspective view of the sliding-slot mounting bracket of FIG. 50A ;

[0135] FIG. 50D is a detailed perspective view showing a slight modification of one of the slotted openings of the mounting bracket of FIG. 50A ;

[0136] FIG. 50E is a broken away schematic of the position of the head rail relative to modification of the slotted opening shown in FIG. 50D ;

[0137] FIG. 50F is a cut away, enlarged, section view along line 50 F- 50 F of FIG. 50E ;

[0138] FIG. 51 is a schematic end view of an alternate mounting bracket and its corresponding head rail, which could be used instead of the end cap and bracket of FIG. 3A ;

[0139] FIG. 51A is a schematic end view, similar to that of FIG. 51 , of an alternate mounting bracket and its corresponding head rail which could be used instead of the mounting bracket of FIG. 51 ;

[0140] FIG. 51B is the same view as in FIG. 51 A, except showing the louvers tilted closed, room side up;

[0141] FIG. 51C is a schematic end view, similar to that of FIG. 51 A, of an alternate mounting bracket and its corresponding head rail which could be used instead of the mounting bracket of FIG. 51 ;

[0142] FIG. 51D is the same view as in FIG. 51 C, except showing the louvers tilted closed, room side down;

[0143] FIG. 51E is a schematic end view, similar to that of FIG. 51 , of an alternate mounting bracket and its corresponding head rail which could be used instead of the mounting bracket of FIG. 3 A, in this case the room side is to the left of the blind;

[0144] FIG. 51F is the same view as in FIG. 51 E, except showing the louvers tilted closed, room side up;

[0145] FIG. 51G is the same view as in FIG. 51 F, except showing the louvers tilted closed, room side down;

[0146] FIG. 52 is an exploded perspective view of the cam-lock hand control shown in FIG. 1 B, for raising and lowering the blind;

[0147] FIG. 53A is a perspective view of the assembled cam-lock hand control of FIG. 52 ;

[0148] FIG. 53B is a perspective view of the same cam-lock hand control of FIG. 53 A, but seen from another side;

[0149] FIG. 54A is a perspective view of the housing for the cam-lock hand control of FIG. 52 ;

[0150] FIG. 54B is an end view of the cam-lock hand control housing of FIG. 54A ;

[0151] FIG. 54C is a section view along the line 54 C- 54 C of FIG. 54B ;

[0152] FIG. 54D is a plan view of the right side of the cam-lock hand control housing of FIG. 54C ;

[0153] FIG. 55A is a section view along the line 55 A- 55 A of FIG. 55B ;

[0154] FIG. 55B is a perspective view of the control button of the cam-lock hand control assembly of FIG. 52 ;

[0155] FIG. 56 is a perspective view of the pulley pin of the cam-lock hand control assembly of FIG. 52 ;

[0156] FIG. 57A is a perspective view of the pulley of the cam-lock hand control assembly of FIG. 52 ;

[0157] FIG. 57B is a front view of the pulley of FIG. 57A ;

[0158] FIG. 58A is a perspective view of the locking pin of the cam-lock hand control assembly of FIG. 52 ;

[0159] FIG. 58B is a top view of the locking pin of FIG. 52 ;

[0160] FIG. 59 is a perspective view of the spring of the cam-lock hand control assembly of FIG. 52 ;

[0161] FIG. 60A is section view along the line 60 A- 60 A of FIG. 53B but with the hand control of FIG. 53B mounted on a tilt bar extrusion and in the “locked” position as shown in FIG. 1A ;

[0162] FIG. 60B is a section through the hand control of FIG. 53B taken along the line 60 B- 60 B, but with the control button in the “open” position before mounting the hand control on the operator bar;

[0163] FIG. 60C is the same view as in FIG. 60A but showing the control button depressed for sliding the hand control along the operator bar;

[0164] FIG. 61A is a perspective view of the bottom pivot bracket assembly of FIG. 1 A, FIG. 61B is an exploded view of the bottom pivot bracket assembly of FIG. 61A ;

[0165] FIG. 62A is a perspective view of an alternate bottom pivot bracket assembly which may be used instead of the bottom pivot bracket assembly shown in FIG. 1A ;

[0166] FIG. 62B is an exploded view of the bottom pivot bracket assembly of FIG. 62A ;

[0167] FIG. 63A is a perspective view of the pivot arm of the bottom pivot bracket assembly of FIG. 62A ;

[0168] FIG. 64A is perspective view of another alternative bottom pivot bracket assembly which may be used instead of the bottom pivot bracket assembly shown in FIG. 1A ;

[0169] FIG. 64B is the same view as that in FIG. 64 A, but showing the pivot bracket assembly in the fully retracted position, corresponding to the louvers being in the fully tilted closed position;

[0170] FIG. 65 is a perspective view of the pivot arm of the bottom pivot bracket assembly of FIG. 61A ;

[0171] FIG. 66A is a perspective view of the pivot attachment of the bottom pivot bracket assembly of FIG. 61A ;

[0172] FIG. 66B is a section view along the line 66 B- 66 B of FIG. 66A ;

[0173] FIG. 67A is a perspective view of another alternative bottom pivot bracket assembly which may be used instead of the bottom pivot bracket assembly of FIG. 4B ;

[0174] FIG. 67B is a side view of the bottom pivot bracket assembly of FIG. 67A ;

[0175] FIG. 67C is a partially broken away section along the line 67 C- 67 C of FIG. 67B ;

[0176] FIG. 68A is an enlarged perspective view of the mounting bracket of FIG. 67A ;

[0177] FIG. 68B is a section along the line 68 B- 68 B of FIG. 68A ;

[0178] FIG. 68C is an enlarged view of the right end portion of FIG. 68B ;

[0179] FIG. 69A is a side view of the bottom pivot bracket assembly of FIG. 67 A, but when the arm is in the retracted position, corresponding to the louvers being in the fully tilted closed position;

[0180] FIG. 69B is the same view as that in FIG. 69 A, but when the arm is in the extended position, corresponding to the louvers being in the fully open position;

[0181] FIG. 70A is a perspective view of the link button which ties together the mounting bracket and the pivot arm of the bottom pivot bracket assembly of FIG. 67A ;

[0182] FIG. 70B is a front view of the link button of FIG. 70A ;

[0183] FIG. 71A is a perspective view of the pivot arm of the bottom pivot bracket assembly of FIG. 67A ;

[0184] FIG. 71B is a section view along the line 71 B- 71 B of FIG. 71A ;

[0185] FIG. 72A is a partially broken away, partially exploded, perspective view of an alternate shutter blind with a bottom pivot bracket assembly designed to look like the profile of the bottom rail;

[0186] FIG. 72B is a partially broken away perspective view of the bottom pivot bracket assembly of FIG. 72 A, shown when in the fully extended position, corresponding to the louvers being in the open position;

[0187] FIG. 73A is a perspective view of the pivot arm which is part of the bottom pivot bracket assembly of FIG. 72A ;

[0188] FIG. 73B is a top view of the pivot arm of FIG. 73A ;

[0189] FIG. 73C is a perspective view of the bottom pivot bracket assembly of FIG. 5F ;

[0190] FIG. 73D is an exploded, perspective view of the bottom pivot bracket assembly of FIG. 73C ;

[0191] FIG. 74 is an enlarged, partially broken away perspective view of the assembly of FIG. 5C ;

[0192] FIG. 75A is a perspective view of the custodial wand clip of FIG. 74 ;

[0193] FIG. 75B is a side view of the custodial wand clip of FIG. 75A ;

[0194] FIG. 76A is a perspective view of the custodial wand tip of FIG. 74 ;

[0195] FIG. 76B is a bottom perspective view of the custodial wand tip, of FIG. 76A ;

[0196] FIG. 76C is a section view along the line 76 C- 76 C of FIG. 76A ;

[0197] FIG. 76D is a section view along the line 76 D- 76 D of FIG. 76C ;

[0198] FIG. 77A is an exploded perspective view of the stop block which is mounted on the tilt bar as shown in FIG. 1B ;

[0199] FIG. 77B is a perspective view of the assembled stop block of FIG. 77A ;

[0200] FIG. 77C is a perspective view of the stop block of FIG. 77B mounted on the tilt bar extrusion;

[0201] FIG. 77D is a top view of the stop block and tilt bar extrusion of FIG. 77C ;

[0202] FIG. 78A is a perspective view of the provisional lift clip shown in FIG. 5B ;

[0203] FIG. 78B is another perspective view of the same provisional lift clip of FIG. 78 A, but seen from an opposite end;

[0204] FIG. 78C is a side view of the provisional lift clip of FIG. 78A ;

[0205] FIG. 79A is a perspective view of one of the provisional lift finger tabs shown in FIG. 5B ;

[0206] FIG. 79B is another perspective view of the same provisional lift finger tab of FIG. 79 A, but seen from another direction;

[0207] FIG. 79C is a section view along the line 79 C- 79 C of FIG. 79A ;

[0208] FIG. 79D is a top view of the provisional finger lift tab of FIG. 79A ;

[0209] FIG. 79E is the same view as FIG. 79D but with the tab mounted on the operator bar;

[0210] FIG. 79F is a section view showing the provisional lift of FIG. 5 B, depicting the lift clip attached to the bottom rail at one end, and the finger tab locked onto the operator bar at the other end;

[0211] FIG. 80 is a side view of the bottom rail insert shown in FIG. 1B ;

[0212] FIG. 80A is a partially broken away, perspective view of the bottom rail insert of FIG. 80 ;

[0213] FIG. 81A is an enlarged perspective view of the bottom rail cord anchor shown in FIG. 1B ;

[0214] FIG. 81B is an enlarged perspective view of the bottom rail cord anchor of FIG. 81 A, but seen from the bottom;

[0215] FIGS. 82A through 82F are perspective views showing the sequence of installation of the lift cords and tilt cables to the bottom rail anchor of FIG. 81 A, and the installation of the bottom rail anchor to the bottom rail of FIG. 1B ;

[0216] FIG. 83 is a schematic view of the inside of the head rail of FIG. 1 A, showing the routing of the lift cords through the cord guides and through the operator bar top attachment;

[0217] FIG. 83A is a schematic view of the inside of the head rail, similar to FIG. 83 , but modified to provide a multiplier effect of the lift cord as it raises or lowers the blind of FIG. 1 :

[0218] FIG. 83B is the same view as FIG. 83A but corresponding to the blind being in the raised position;

[0219] FIG. 84A is a schematic view along the line 84 - 84 of FIG. 2A (with the end caps removed for drawing clarity) when the louvers are fully closed in the tilted down position (room side tilted down);

[0220] FIG. 84B is the same view as FIG. 84A but when the louvers are fully tilted open;

[0221] FIG. 84C is the same view as in FIG. 84A but when the louvers are fully closed in the tilted up position (room side tilted up);

[0222] FIG. 85 is an exploded view of a slide-lock hand control which may be used instead of the cam-lock hand control of FIG. 52 ;

[0223] FIG. 85A is a perspective view of the slide-lock hand control of FIG. 85 ;

[0224] FIG. 85B is the same view as in FIG. 85 A, but with the slide-lock hand control mounted onto the operator bar;

[0225] FIG. 85C is a broken away, enlarged, sectional view showing the interconnection of the grip cover and the cover housing of the slide-lock hand control of FIG. 85 ;

[0226] FIG. 86 is a perspective view of the slide-lock hand control of FIG. 85 , with the grip cover removed for clarity, showing the routing of the lift cord 12 through the slide-lock hand control;

[0227] FIG. 86A is an enlarged perspective view of the slide-lock hand control assembly of FIG. 85 , but with the grip cover removed for clarity, shown in the locked position;

[0228] FIG. 86B is a side sectional view through an operator bar, showing the slide-lock hand control assembly of FIG. 86 A, indicating how the lock arm grips the operator bar extrusion to lock the slide-lock hand control assembly in place;

[0229] FIG. 87A is a perspective view of the slide-lock hand control assembly of FIG. 86 A, but shown in the unlocked raising position (for lowering the louver stack);

[0230] FIG. 87B is a side sectional view through an operator bar showing the slide-lock hand control assembly of FIG. 87 A, with the lock arm lifted up to unlock it from the operator bar extrusion to permit raising of the hand control (and thus lowering of the louver stack);

[0231] FIG. 88A is a perspective view of the slide-lock hand control assembly of FIG. 86 A, shown in the lowering position;

[0232] FIG. 88B is a side sectional view through an operator bar showing the slide-lock hand control assembly of FIG. 88 A, in the position that permits the slide-lock hand control assembly to be lowered (thus raising the louver stack);

[0233] FIG. 89A is an enlarged perspective view of the slide-lock pulley housing of the slide-lock hand control assembly of FIG. 85 ;

[0234] FIG. 89B is another perspective view of the slide-lock pulley housing of FIG. 89A ;

[0235] FIG. 89C is a side view of the slide-lock pulley housing of FIG. 89B ;

[0236] FIG. 90A is an enlarged perspective view of the slide-lock housing of FIG. 85 ;

[0237] FIG. 90B is a plan view of the slide-lock housing of FIG. 90A ;

[0238] FIG. 91A is an enlarged perspective view of the slide-lock grip cover of FIG. 85 ;

[0239] FIG. 91B is a plan view looking into the slide-lock grip cover of FIG. 91A ;

[0240] FIG. 92A is an enlarged perspective view of the lock arm of FIG. 85 ;

[0241] FIG. 92B is a plan view of the lock arm of FIG. 92A ;

[0242] FIG. 93A is an enlarged perspective view of the pulley of FIG. 85 ;

[0243] FIG. 93B is a section view along the line 93 B- 93 B of FIG. 93A ;

[0244] FIG. 94 is an enlarged perspective view of the pulley axle of FIG. 85 ;

[0245] FIG. 95A is a perspective view of a two-piece cord glide which may be used instead of the three-piece cord glide shown in FIG. 1B ;

[0246] FIG. 95B is an exploded view of the cord glide of FIG. 95A

[0247] FIG. 96A is a section view along the line 96 A- 96 A of FIG. 96B ;

[0248] FIG. 96B is a bottom perspective view of the cord glide of FIG. 95A ;

[0249] FIG. 97 is another perspective view of the cord glide of FIG. 95 A, but seen from the opposite end: and, FIG. 97A is the same view as FIG. 96A but with the pulley removed to show the flange which supports the pulley.

DESCRIPTION OF THE PREFERRED EMBODIMENTS:

[0250] Referring now to FIGS. 1A and 1B , the shutter blind 10 includes a head rail 20 and a plurality of slats or louvers 14 suspended from the head rail 20 by means of tilt cables 16 and their associated cross cords which together comprise the ladder tapes. Two lift cords 12 (not shown in these Figures) are fastened at the bottom of the bottom slat (or bottom rail) 21 , which is heavier than the other louvers 14 . The head rail 20 includes end caps 30 which pivotably mount the head rail 20 to mounting brackets 40 which secure the shutter blind 10 to the window frame. The tilt cables 16 are secured to the head rail 20 by means of cord glides 50 which also serve to guide the lift cords 12 into the head rail 20 (as seen in FIG. 83 ). The lift cords 12 travel within the head rail 20 until they exit the head rail 20 toward one end of the head rail 20 via the tilt bar top attachment 60 A, through the top end cap 70 A, down the tilt bar 80 , around a doubler pulley in the hand control 90 , and back up to be tied off at the top end cap 70 A. The bottom of the tilt bar 80 is pivotably secured to the window frame by means of a bottom pivot bracket 100 . The bottom rail 21 could be formed by placing a rail insert 110 into the bottom-most louver 14 . Cord anchors 120 are used to attach the lift cords 12 and the tilt cables 16 to the bottom rail 21 . A stop block 130 is secured to the tilt bar 80 to limit the upward travel of the hand control 90 on the tilt bar 80 so that the hand control 90 is not pushed up beyond the point where the shutter blind 10 is fully lowered.

[0251] FIGS. 2A and 2B depict a second embodiment of a shutter blind 10 A made in accordance with the present invention. This second embodiment 10 A is similar to the first embodiment 10 . One difference is the mounting bracket 40 A, which has a bullet shaped nose instead of the slide-slot design of the mounting bracket 40 . Also, the connection of the tilt bar 80 to the head rail 20 is via a buttons-and-holes connection 60 instead of the ball and socket connection 60 A of FIGS. 1A and 1B .

[0252] FIGS. 3A and 3B depict a third embodiment of a shutter blind 10 B made in accordance with the present invention. This third embodiment 10 B is similar to the second embodiment 10 A. One difference is that there are now two tilt bars 80 and a bottom rail 21 A, which is very similar to the top rail 20 , instead of being a louver 14 with a rail insert 110 as in the first and second embodiments. In this embodiment, the bottom rail tilts, but it does not raise or lower. Instead, it is secured to the window frame with mounting brackets 40 A like those securing the head rail 20 . The two tilt bars 80 are secured not only to the head rail 20 via the tilt bar top attachment 60 and the top end cap 70 , but they are also secured to the bottom rail 21 A, via a multi-bar bottom attachment 140 , an adjustable bottom end cap 150 , and bottom plug 160 . This assembly is height adjustable to compensate in case the distance between the head rail 20 and the bottom rail 21 A does not exactly match the connection points on the tilt bars 80 . A bottom pivot bracket 100 , as in the previous embodiments, is no longer required. Also, the tilt bars 80 in this embodiment of the shutter blind are located directly in front of and conceal the tilt cables 16 and the lift cords 12 , and the cord glides 50 (of the previous embodiments) in the front (room side) of the head rail 20 are replaced by the tilt bar top attachments 60 , which serve the same function. It should be noted that this embodiment 10 B allows for the shutter blind 10 B to be raised and lowered from the bottom up (as is typically the case) or from the top down. To raise and lower from the top down, the lift cords 12 would be routed through the bottom rail 21 A.

[0253] FIGS. 4A and 4B depict a fourth embodiment of a shutter blind 10 C made in accordance with the present invention. This fourth embodiment 10 C is similar to the first embodiment 10 , except that it uses a different version of the bottom pivot bracket 100 A.

[0254] FIGS. 5A and 5B depict a fifth embodiment of a shutter blind 10 D made in accordance with the present invention. This fifth embodiment 10 D is similar to the third embodiment 10 B, except that it has no hand control mechanism 90 for raising and lowering the shutter blind. This shutter blind 10 D has no lift cords 12 . Instead, a provisional lift attachment 170 is used on each tilt bar 80 to manually raise and lower the bottom louver 21 A via a finger tab, which automatically locks this bottom louver 21 A in place as soon as the finger tab is released, as will be explained later. Since there are no lift cords 12 , there is no need for the pulleys in the cord glides 50 or in the tilt bar top attachment 60 . Never-the-less, these same components 50 , 60 may be used either with or without their respective pulleys. A stop block 130 limits the downward travel of the bottom louver 21 A.

[0255] FIG. 72A depicts a sixth embodiment of a shutter blind 10 E made in accordance with the present invention. This sixth embodiment 10 E is similar to the first embodiment 10 , except that it uses a different version of the bottom pivot bracket 100 D.

[0256] The Head Rail:

[0257] FIGS. 6A and 6B show the head rail 20 of FIG. 1A . This head rail 20 has an airfoil profile, with the cross-section defining two congruent convex arcs, which meet at their ends to define pointed edges 208 , an outer surface 202 , and an inner surface 204 . The inner surface 204 has four ribs 206 running axially the entire length of the head rail 20 . These ribs 206 are close to the sharp edges 208 of the airfoil profile, and the purpose of these ribs 206 is to provide a stop which may be used for retaining various components, such as cord glides 50 , tilt bar top attachments 60 , and end caps 30 , as will be explained later. The head rail 20 has a profile which is very similar to the profile of the rest of the louvers 14 of the shutter blind 10 . Thus, from a distance, it is almost impossible to tell that the head rail 20 is any different than the rest of the louvers 14 .

[0258] Alternate Embodiments of the Head Rail

[0259] FIG. 7A and 7B show a head rail 20 A, which may be used instead of the head rail 20 of FIG. 1A . This head rail 20 A is very similar to the head rail 20 , except that it is wider, meaning that the distance between the two sharp edges 208 A of this head rail 20 A is greater than the distance between the sharp edges 208 of the head rail 20 . The reason for this wider head rail 20 A is that, in most Venetian blinds, it is difficult to ensure full closure of all the slats in the blind when the blind is tilted closed. This problem worsens as one moves down the stack, such that the last few louvers 14 in the stack may show a definite gap, even as the stack is intended to be fully tilted closed. This wider head rail 20 A solves that problem. Since the tilt cables 16 are attached to and are supported from the sharp ends 208 A of the head rail 20 A, if the head rail 20 A is a bit wider than the balance of the slats (or louvers) 14 , then, as the head rail 20 A tilts to the fully closed position, the tilt cables 16 must travel a slightly longer distance than the tilt cables 16 would travel with a regular width head rail 20 . This extra amount of travel of the tilt cables 16 is enough to pull the tilt cables 16 up just enough to ensure full closure of the stack of louvers 14 . Thus, the wider head rail 20 A provides one solution to the problem of poor closure of the louver stack by slightly increasing the travel distance of the tilt cables 16 as they tilt closed. It should be noted that, while the points of connection of the tilt cables 16 to the head rail 20 A would be farther apart than the width of the louvers 14 , it is important to know how much farther apart than the width of the louvers 14 they should be. Too wide, and the size difference between the head rail 20 A and the louvers 14 becomes obvious and spoils the uniformity of appearance in the closed position. Not wide enough, and the effect is not significant enough to ensure complete closure of the blind. The preferred range is for the connection points of the tilt cables 16 to the head rail 20 A to be between 5% and 10% further apart than the width of the louvers 14 , so the head rail 20 A preferably is 5-10% wider than the louvers 14 .

[0260] As indicated earlier, the ribs 206 in the head rail 20 provide a stop for securing components of the shutter blind 10 . FIG. 8 shows notches 210 , cut into the sharp edges 208 of the hear rail 20 . These notches 210 are used to locate and mount some of these components onto the head rail 20 , as shown in FIG. 1B . These notches 210 preferably extend into the head rail 20 only as far as the ribs 206 . As the various components are mounted onto the head rail 20 , they may snap and lock in place by grabbing onto the ribs 206 .

[0261] In the single-piece head rail 20 , these notches 210 would likely have to be machined, as it would be very difficult to reach into the head rail 20 with a backer to help in punching out these notches 210 . In order to alleviate this problem, a three piece head rail 20 B is proposed, as shown in FIGS. 9A, 9B , and 9 C. This three-piece head rail 20 B, which may be used instead of the single piece head rail 20 , includes two identical halves 212 having a substantially V-shaped cross-section (See FIGS. 10A and 10B ) and an interconnecting channel 214 (See FIGS. 11A and 11B ), which connects the V's together.

[0262] The interconnecting channel 214 has a cross-section that resembles two “W”'s 216 , which are themselves connected together by a straight web 218 . When the halves 212 are jointed together, the resulting head rail 20 B looks very much like a standard head rail 20 which has been bisected lengthwise at the mid-point between the two sharp edges 208 . Thus, each of the head rail halves 212 resembles a “V” lying on its side. Each of the legs of the “V” terminates in a finger 220 designed to fit into the valley 222 in the middle of each of the “W”'s of the interconnecting channel 214 . Each of the V's also has one leg that ends in a small valley 224 , while the other leg ends in a corresponding small peak 226 designed to mate with the valley 224 on the mating leg of the other half 212 .

[0263] To assemble the three-piece head rail 20 B of FIGS. 9 A-C, the two identical head rail halves 212 are placed longitudinally side-by-side so that the peak 226 of one head rail half 212 mates up with the valley 224 of the other head rail half 212 . The interconnecting channel 214 is then slid longitudinally between the two halves 212 so that the fingers 220 fit inside the valleys 222 of the interconnecting channel 214 , thus forming the head rail assembly 20 B. Alternatively, the two identical head rail halves 212 may be snapped directly onto the interconnecting channel 214 instead of sliding the channel 214 longitudinally between the two halves 212 . It is also important to note that the interconnecting channel 214 need not be a single piece extending the entire length of the head rail 20 . Instead, it may be a plurality of shorter interconnecting channels 214 spaced along the length of the head rail 20 . This plurality of shorter channels 214 has the advantage that it results in a lighter head rail 20 , and it opens up passageways within the head rail 20 for the routing of the lift cords from the cord glides 50 to the tilt bar top attachment 60 , as shown in FIG. 83 . It is a simple matter to insert a backer into each of the head rail halves 212 before the halves are assembled together in order to punch out the notches 210 required for mounting some of the components of the shutter blind.

[0264] FIGS. 12A and 12B show a two-piece head rail 20 C, which may be used instead of the single piece head rail 20 or the three-piece head rail 20 B. In this design, the head rail 20 C includes two identical halves 230 , but, unlike the two halves 212 of the three-piece head rail 20 B, these two halves 230 split the standard head rail 20 lengthwise along the sharp edges 208 instead of along the mid point of these two sharp edges 208 . One end of the head rail halves 230 ends in an L-shaped notch 234 , and the opposite end ends in an L-shaped finger 232 , designed to mate with the notch 234 . To assemble this two-piece head rail 20 C, the two halves 230 are slid together lengthwise, with the finger 232 of one piece 230 sliding into the corresponding notch 234 of the other piece 230 .

[0265] FIGS. 13A and 13B show another alternate embodiment of a two-piece head rail 20 D, which is very similar to the two-piece head rail 20 C described earlier. The two identical halves 230 A also split the standard head rail 20 lengthwise along the sharp edges 208 . In this design, the mating portions that hold the two halves 230 A together are further recessed from the edges 208 . A finger 232 A projects from its half 230 A by and arm 233 A. A notch 234 A is shaped to engage the finger 232 A, as in the case of the previous embodiment 20 C, so that the assembly of this embodiment 20 D is done in the same manner as for the head rail 20 C.

[0266] As will be discussed later in more detail, there are several components which may be mounted to the head rail 20 - 20 D. Some of these components, such as the cord glides 50 , may be added in pairs, or are symmetrical along the axis of rotation of the head rail 20 - 20 D (such as the louvers 14 and the bottom rail insert 110 ), so that these components add very little if any imbalance to the head rail. However, there are other components, such as the tilt bar 80 , the hand control 90 , the tilt bar top attachment 60 , the top end cap 70 , the bottom pivot linkage 100 , the stop block 130 , and the multi-bar attachment 140 which hang from one side (normally the room side) of the head rail and thus contribute to an imbalance of the head rail, which will tend to tilt down toward the side of the additional appended weight. To ameliorate this condition, weights 236 (See FIGS. 15A and 15B ) may be added to the side (normally the wall side) opposite the weighted down side of the head rail. In this particular embodiment, the weights 236 are made so that one weight 236 approximately compensates for the weight of all the unbalanced hardware hanging from the head rail 20 (except for the tilt bar 80 itself), and each additional weight 236 compensates for every linear foot of tilt bar 80 length. Thus, a shutter blind system 10 may be custom made, and yet the weights may still be fine-tuned so that the head rail is approximately in equilibrium, requiring only a very small motive force in either direction to accomplish tilting of the entire shutter blind 10 , and requiring a very small frictional resistance to maintain the shutter blind 10 in the selected tilt position.

[0267] The standard head rail 20 preferably is modified slightly to accommodate the weights 236 . The modified head rail 20 E (See FIGS. 14A and 14B ) has modified ribs 206 E to engage the notches 238 in the roughly triangular-shaped profile of the weights 236 , so that the weights 236 may slide into the head rail 20 E between one of the sharp edges 208 and the adjacent ribs 206 E. The ribs 206 E, received in the notches 238 of the weights 263 , hold the weights 236 in place so they do not shift as the head rail 20 E is tilted.

[0268] The End Caps:

[0269] The ends of the head rail 20 are terminated with end caps 30 , which are used to mount the head rail to the mounting brackets 40 , as shown in FIG. 1B . FIGS. 16A and 16B show the spring-loaded end cap 30 , which includes an end cap housing 302 , two springs 304 , and two pins 306 . FIGS. 17A through 17E show the end cap housing 302 . The housing 302 has an airfoil shaped profile 303 , which closely matches the profile of the head rail 20 . This airfoil profile 303 has an inside surface 308 and an outside surface 310 . The inside surface 308 has two hollow tube projections 312 , 314 . The first hollow tube projection 312 is located in the center of the airfoil shaped profile 303 , and the second hollow tube projection 314 is also located along the central axis of the end cap 302 but very close to the end of the end cap 302 , close to one of the pointed ends 316 . These two hollow tubes 312 , 314 define openings that extend from the inside surface 308 , through the airfoil shaped profile 303 , to the outside surface 310 . On the other end 316 of the airfoil profile 303 (the end 316 opposite the location of the hollow tube projection 314 ), there is a tab 318 projecting from the inside surface 308 . This tab 318 is designed to engage with the ribs 206 of the head rail 20 so as to lock the end cap 30 in place onto the head rail 20 . The two hollow tubes 312 , 314 are open at their ends 312 A, 314 A, respectively, which are defined by the outside surface 310 , but the tubes 312 , 314 are closed (except for small holes present only for manufacturing purposes) on the opposite end. The hollow tubes 312 , 314 define longitudinal slotted openings 320 extending from the closed end of the tubes 312 , 314 , to the inside surface 308 of the airfoil profile 303 , and these slotted openings 320 become notched out key ways 322 (See FIG. 17E ) as they extend through the airfoil profile 303 and to the outside surface 310 .

[0270] The pins 306 (See FIGS. 18A, 18B , and 18 C) are partially hollowed