CA2473764A1 - Window covering height adjustment method and apparatus using traveling rotor - Google Patents
Window covering height adjustment method and apparatus using traveling rotor Download PDFInfo
- Publication number
- CA2473764A1 CA2473764A1 CA 2473764 CA2473764A CA2473764A1 CA 2473764 A1 CA2473764 A1 CA 2473764A1 CA 2473764 CA2473764 CA 2473764 CA 2473764 A CA2473764 A CA 2473764A CA 2473764 A1 CA2473764 A1 CA 2473764A1
- Authority
- CA
- Canada
- Prior art keywords
- shade
- support structure
- lower support
- line
- lines
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract 22
- 230000003028 elevating effect Effects 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/262—Lamellar or like blinds, e.g. venetian blinds with flexibly-interconnected horizontal or vertical strips; Concertina blinds, i.e. upwardly folding flexible screens
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/262—Lamellar or like blinds, e.g. venetian blinds with flexibly-interconnected horizontal or vertical strips; Concertina blinds, i.e. upwardly folding flexible screens
- E06B2009/2625—Pleated screens, e.g. concertina- or accordion-like
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
- E06B9/32—Operating, guiding, or securing devices therefor
- E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
- E06B2009/3225—Arrangements to aid the winding of cords rollers
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Blinds (AREA)
Abstract
A method of controlling the vertical height of a window shade having a top and bottom, which includes providing shade upper support structure at or proximate the shade top; providing at least one substantially vertically elongated shade support line extending downwardly from the upper support structure, and providing shade lower support structure at or proximate the shade bottom; elevating or lowering the shade lower support structure relative to one or more support lines;
and securing the shade lower support structure to the line or lines at a selected height position relative to the line length above the lower support structure, whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure effective securement to line or lines.
and securing the shade lower support structure to the line or lines at a selected height position relative to the line length above the lower support structure, whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure effective securement to line or lines.
Description
BACKGROUNb OF THE INVENTION
This invention relates generally to control or adjustment of window coverings, and more particularly to ease and efficiency of window covering height adjustment. Such window coverings are referred to as shades, or blinds, or window coverings generally, and may be formed by pleats of a single piece of material, o.r by other configuration.
There is need for improvements in adjustability of such coverings or shades, as for example where the effective window covering height of the shade is to be adjusted. zn the past, pleated shades were suspended by their own material, i.e. were allowed to hang, causing the weight of the shade to expand the pleats. It was then difficult to accurately adjust shade height, since over time the shade weight could expand the pleats, changing the overall height of the shade. Such pleated shades typically consisted of paper. Also venetian blinds and all window coverings require raising and lowering functions.
This invention relates generally to control or adjustment of window coverings, and more particularly to ease and efficiency of window covering height adjustment. Such window coverings are referred to as shades, or blinds, or window coverings generally, and may be formed by pleats of a single piece of material, o.r by other configuration.
There is need for improvements in adjustability of such coverings or shades, as for example where the effective window covering height of the shade is to be adjusted. zn the past, pleated shades were suspended by their own material, i.e. were allowed to hang, causing the weight of the shade to expand the pleats. It was then difficult to accurately adjust shade height, since over time the shade weight could expand the pleats, changing the overall height of the shade. Such pleated shades typically consisted of paper. Also venetian blinds and all window coverings require raising and lowering functions.
~
SUMMARY OF THE INVENTTON
It is a major object of the invention to provide an easily adjustable means al).owing shade height adjustment, and where only a minimum number of shade supporting lines are required.
Basically, the improvement comprisEs aj upper support structure at or proximate the shade top, b) at least one substanti<311y vertically elongated shade support line extending downwardly from said upper support structure, c) shade Lower support structure at or proximate the shade bottom, and shade adjustment includes:
d) elevating or lowering the shade lower support structure relative to the one or more support lines, e) and effectively securing the shade lower support structure to the line or lines at a selected height position relative to the line length, f) said securing including effecting adjustable wrapping of the line or lines about a rotary drum or drums provided and positioned at said lower support structure, to travel therewith, g) whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure, As will appear, the shade is typically provided in the form of a sequence of pleats, and the line or lines is or are located adjacent such pleats.
Another object includes prouisian for weight of the lowermost extent of the shade to be carried by the shade lower support structure as that lower support structure is elevated to shorten the height of the shade. As the shade lower support structure is adjusted upwardly, the line below that support structure is typically wound automatically by a traveling drum or drums associated with and below the lowermost support structure..
A further object i.s to pravidP fir Rncasing the drum or drums in a housing or housings, and supporting the shade lower support structure on the housing ar housings.
The housings are typically located at laterally spaced locations and directly beneath or inside the 7owPr suppn.rt structure.
Another object includes pravia ion of a spring or springs associated with th.e drum or drums, and acting to urge the drum ar drums in rotary direct.ian to automatically wind the line or lines.
A further object includes provision of a support shnu'lder an upper extent of, said housing or housings to engage lowermost surfaces of the lower support structure, and acting to orient said housing or housings relative tn said shade support strur_ture td 20 enable line winding.
An additional object includes provision of a manipulahlP line gripping stop, in aysor_iatinn with aarh housing, to grip the line in shade height adjusted position, and to loosen the Line for winding or 7 .5 unwi nc3i ng as the shade hPi ght i s adjiasred .
These and other objects and advantages of the invention, as well as the details of an illustrative embodiment, will be more fully under:>tood from the' following specification and drawings" in which:
DRAWING DESCRIPTION
Fig. 1 is an elevation shooting an adjustably supported window shade;
i.
Fig. 2 is an enlarged elevational view, showing use of a line wrapping device below the shade lowermost suppoxt portion;
Fig. 3 is a view showing line wrapping drum and spring structure;
Fig_ a is an enlarged diagrammatic view showing shade lowering;
Fig. 5 is a view like Fig. ~ showing shade raising;
1o Figs. 6 and 6a_ are elevational view showing shade full lowering and shade partial raising;
Fig_ 7 is an end elevation taken on lines 7-7 of Fig. 1; and Fig. 8 shows a line providing drum in a case, with a finger control to engage a lina_.
DETAILED DESCRIPTION
In Fig. 1, shade upper support structure is shown at 10, as in the form of a horizontal upper part ~.oa of a window frame. ThP frame also includes frame lower part lOb, and verticals at 1oc and 10d. The window may for example include a glass pane 12.
A window shade or cover is shown at 13, and may include pleats 13a, which expand apart to extend diagonally back and forth, when the shade is hung. An upper shade support structure is located at or proximate the shade top. See far example horizontal slat 1~ the uppex side of which may ba attached to the frame part loo, as for example by tape having adhesive at its opposite sides.
At least one, and prefErably twn support line.
or cords 1? are suspended from slat 3.4, the two illustrated lines 1? being spaced about horiaantally.
Those 7inec pass dawnwardly through holes in the pleats, as seen in Fig_ ?, and they also pass downwaxdly loosely through holes or openings 18 in a shade lower support strur_t~a.re located at or proximate the shade bottom. As shown, the lower support structure comprises a horizontally elongated lower slat 19. The uppermost pleat l3aa may be attached to the underside of the upper slat 1~; and the lowermost pleat l3bb may be attached to the upper side of the lower slat 19_ The attachments may be made by use of dual adhesive sided tape.
The shade height may therefore be adjusted by manually elevating or lowering the lower slat 19, relative to the line or lines 17, and securing it in adjusted position.
such securing is preferably made by travP7ing line wrapping adjusting device or devices 20, whereby the lower slat 19 is held in selected elevated position by those devices 20. As shown in Fig.. 2, the plat 19 seats on device 20, and the cord lower. extent 17c is automatically wrapped on a drum 21 in a case 32, of device 20. See Fig. 3, The preferred methad of ass includes:
d) elevating or lowering the shade lower support structure relative to one or more cuppnrt lines, e) and effectively securing the shade lower support structure to the line or lines at a selected height position relative to the line length above that lower support structure, f) such securing including effecting adjustable wrapping of the line or lines about a .rotary drum or drums provided and positioned at that lower support structure to travel therewith, whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure.
Figs. 2 and 3 show a rotary drum 21 on a shaft 31 carried inside a case or housing 32. The latter is located adjacent the slat 19, so that line 17 enters the housing at 33, and winds on the drum. The case is typically located just below slat 19, and is carried by the slat. An abutment 34 may be carried by the cace, t~
have its upper flat side 34a in engagement with the lower side 19a of the slat 19.
A spring 35 in the case urg~_s drum in a .rotary 1o direction tending to wind up the line 17 on the drum.
Accordingly as the slat 19 is raised, as by hand, the case 32 moves up, and the drum winds up the line that:
would otherwise dangle. Note coil spring turned ends 35a and 35b connected to the case and to the drum.
Likewise, as slot 19 is pulled down, or lowered, the drum 21 rotates to spool off the amount of line 17, to accommodate such lowering.
If need be, a line gripping stop or control 40 may be provided, as shown in fig. 8, to grip the drum, in adjusted position of the slat 19. See for example Sever 4o urged by a spring 41 to grip the drum flange 21a, and released by finger pressure to allow drum rotation.
Fig. 4 schematically shows the operation of shade lowering; and Fig. 5 schematically shows the operation of shade raising to gather pleats. Fig. 6 shows two casings 20 spaced apart laterally below such lower slot 19, to support the shade in lowered position.
Lines 17 extending above the drums wind up on drums within the casings as the shade lower slat l9 is raised.
Fig. 6a shows the two casings, during raising of the shade.
SUMMARY OF THE INVENTTON
It is a major object of the invention to provide an easily adjustable means al).owing shade height adjustment, and where only a minimum number of shade supporting lines are required.
Basically, the improvement comprisEs aj upper support structure at or proximate the shade top, b) at least one substanti<311y vertically elongated shade support line extending downwardly from said upper support structure, c) shade Lower support structure at or proximate the shade bottom, and shade adjustment includes:
d) elevating or lowering the shade lower support structure relative to the one or more support lines, e) and effectively securing the shade lower support structure to the line or lines at a selected height position relative to the line length, f) said securing including effecting adjustable wrapping of the line or lines about a rotary drum or drums provided and positioned at said lower support structure, to travel therewith, g) whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure, As will appear, the shade is typically provided in the form of a sequence of pleats, and the line or lines is or are located adjacent such pleats.
Another object includes prouisian for weight of the lowermost extent of the shade to be carried by the shade lower support structure as that lower support structure is elevated to shorten the height of the shade. As the shade lower support structure is adjusted upwardly, the line below that support structure is typically wound automatically by a traveling drum or drums associated with and below the lowermost support structure..
A further object i.s to pravidP fir Rncasing the drum or drums in a housing or housings, and supporting the shade lower support structure on the housing ar housings.
The housings are typically located at laterally spaced locations and directly beneath or inside the 7owPr suppn.rt structure.
Another object includes pravia ion of a spring or springs associated with th.e drum or drums, and acting to urge the drum ar drums in rotary direct.ian to automatically wind the line or lines.
A further object includes provision of a support shnu'lder an upper extent of, said housing or housings to engage lowermost surfaces of the lower support structure, and acting to orient said housing or housings relative tn said shade support strur_ture td 20 enable line winding.
An additional object includes provision of a manipulahlP line gripping stop, in aysor_iatinn with aarh housing, to grip the line in shade height adjusted position, and to loosen the Line for winding or 7 .5 unwi nc3i ng as the shade hPi ght i s adjiasred .
These and other objects and advantages of the invention, as well as the details of an illustrative embodiment, will be more fully under:>tood from the' following specification and drawings" in which:
DRAWING DESCRIPTION
Fig. 1 is an elevation shooting an adjustably supported window shade;
i.
Fig. 2 is an enlarged elevational view, showing use of a line wrapping device below the shade lowermost suppoxt portion;
Fig. 3 is a view showing line wrapping drum and spring structure;
Fig_ a is an enlarged diagrammatic view showing shade lowering;
Fig. 5 is a view like Fig. ~ showing shade raising;
1o Figs. 6 and 6a_ are elevational view showing shade full lowering and shade partial raising;
Fig_ 7 is an end elevation taken on lines 7-7 of Fig. 1; and Fig. 8 shows a line providing drum in a case, with a finger control to engage a lina_.
DETAILED DESCRIPTION
In Fig. 1, shade upper support structure is shown at 10, as in the form of a horizontal upper part ~.oa of a window frame. ThP frame also includes frame lower part lOb, and verticals at 1oc and 10d. The window may for example include a glass pane 12.
A window shade or cover is shown at 13, and may include pleats 13a, which expand apart to extend diagonally back and forth, when the shade is hung. An upper shade support structure is located at or proximate the shade top. See far example horizontal slat 1~ the uppex side of which may ba attached to the frame part loo, as for example by tape having adhesive at its opposite sides.
At least one, and prefErably twn support line.
or cords 1? are suspended from slat 3.4, the two illustrated lines 1? being spaced about horiaantally.
Those 7inec pass dawnwardly through holes in the pleats, as seen in Fig_ ?, and they also pass downwaxdly loosely through holes or openings 18 in a shade lower support strur_t~a.re located at or proximate the shade bottom. As shown, the lower support structure comprises a horizontally elongated lower slat 19. The uppermost pleat l3aa may be attached to the underside of the upper slat 1~; and the lowermost pleat l3bb may be attached to the upper side of the lower slat 19_ The attachments may be made by use of dual adhesive sided tape.
The shade height may therefore be adjusted by manually elevating or lowering the lower slat 19, relative to the line or lines 17, and securing it in adjusted position.
such securing is preferably made by travP7ing line wrapping adjusting device or devices 20, whereby the lower slat 19 is held in selected elevated position by those devices 20. As shown in Fig.. 2, the plat 19 seats on device 20, and the cord lower. extent 17c is automatically wrapped on a drum 21 in a case 32, of device 20. See Fig. 3, The preferred methad of ass includes:
d) elevating or lowering the shade lower support structure relative to one or more cuppnrt lines, e) and effectively securing the shade lower support structure to the line or lines at a selected height position relative to the line length above that lower support structure, f) such securing including effecting adjustable wrapping of the line or lines about a .rotary drum or drums provided and positioned at that lower support structure to travel therewith, whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure.
Figs. 2 and 3 show a rotary drum 21 on a shaft 31 carried inside a case or housing 32. The latter is located adjacent the slat 19, so that line 17 enters the housing at 33, and winds on the drum. The case is typically located just below slat 19, and is carried by the slat. An abutment 34 may be carried by the cace, t~
have its upper flat side 34a in engagement with the lower side 19a of the slat 19.
A spring 35 in the case urg~_s drum in a .rotary 1o direction tending to wind up the line 17 on the drum.
Accordingly as the slat 19 is raised, as by hand, the case 32 moves up, and the drum winds up the line that:
would otherwise dangle. Note coil spring turned ends 35a and 35b connected to the case and to the drum.
Likewise, as slot 19 is pulled down, or lowered, the drum 21 rotates to spool off the amount of line 17, to accommodate such lowering.
If need be, a line gripping stop or control 40 may be provided, as shown in fig. 8, to grip the drum, in adjusted position of the slat 19. See for example Sever 4o urged by a spring 41 to grip the drum flange 21a, and released by finger pressure to allow drum rotation.
Fig. 4 schematically shows the operation of shade lowering; and Fig. 5 schematically shows the operation of shade raising to gather pleats. Fig. 6 shows two casings 20 spaced apart laterally below such lower slot 19, to support the shade in lowered position.
Lines 17 extending above the drums wind up on drums within the casings as the shade lower slat l9 is raised.
Fig. 6a shows the two casings, during raising of the shade.
Claims (21)
1. The method of controlling the vertical height of a window shade having a top and bottom, which includes the steps a) providing shade upper support structure at or proximate the shade top, b) providing at least one substantially vertically elongated shade support line extending downwardly from said upper support structure, c) and providing shade lower support structure at or proximate the shade bottom, d) elevating or lowering said shade lower support structure relative to said one or more support lines, e) and effectively securing said shade lower support structure to the line or lines at a selected height position relative to the line length above said lower support structure, f) said securing including effecting adjustable wrapping of the line or lines about a rotary drum or drums provided and positioned at said lower support structure, g) said shade lower support structure being a vertically relatively thin slat having at least one vertical through opening to pass said at least one shade support line.
h) the entirety or entireties of said drum or drums located below and substantially adjacent said slat.
i) whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure.
h) the entirety or entireties of said drum or drums located below and substantially adjacent said slat.
i) whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure.
2. The method of claim 1 wherein said shade is provided in the form of a sequence of pleats, and said line or lines is or are located adjacent said pleats.
3. The method of claim 1 wherein the weight of the lowermost extent of the shade is carried by said shade lower support structure as said lower support structure is elevated to shorten the height of the shade.
4. The method of claim 1 including encasing said drum or drums in a housing or housings, and supporting said shade lower support structure on said housing or housings, the overall heights of each drum housing or housings exceeding the vertical thickness of the slat.
5. The method of claim 4 including locating said housings at laterally spaced locations each directly beneath said lower support structure.
6. The method of claim 5 including providing a spring or springs associated with said drum or drums, and acting to urge said drum or drums in rotary direction to wind said line or lines.
7. The method of claim 4 including providing support shoulders on upper extents of said housing or housings to engage lowermost surfaces of said lower support structure, and acting to orient said housings relative to said shade support structure.
8. The method of claim 4 including attaching said housing or housings to said shade lowermost support:
structure.
structure.
9. The method of claim 8 including providing a manipulable line gripping stop in association with each housing, to grip the line in shade height adjusted position, and to loosen the line for winding or unwinding as the shade height is adjusted.
10. The method of controlling the vertical height of a window shade having a top and bottom, and pleats therebetween which includes the steps a) providing shade upper support structure at or proximate the shade top, b) providing at least one substantially vertically elongated shade support line extending downwardly from said upper support structure, c) and providing shade lower support structure in the form of a substantially horizontally extending slat for supporting pleats gathered or gathering at or proximate the shade bottom, d) elevating or lowering said shade lower support structure relative to said one or more support lines, e) and effectively securing said shade lower support structure to the line or lines at a selected height position relative to the line length above said lower support structure, by providing a holder or holders entirely below said slat or and by which said line or lines are adjustably held, below said slat, f) whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure.
11. The method of claim 10 wherein said shade is provided in the form of a sequence of said pleats, and said line or lines is or are located adjacent said pleats and passing through said pleats at locations in vertical alignment with said stop or stops.
12. The method of claim 10 wherein weight imposed by the lowermost pleats of the shade is carried by said shade lower support structure as said lower support structure is elevated to shorten the height of the shade.
13. The method of claim 10 wherein lowermost extent of the line or lines is or are extended below said lower support structures and including supporting said lowermost extent of the line or lines at a location or locations characterized in that said lowermost extent of the line or lines remains extended below said slat.
14. The method of claim 10 wherein said holder or holders have slidable engagement with and being adjustable along the line length in response to manual manipulation of said holder or holders.
15. The method of controlling the vertical height of a window shade having a top and bottom, which includes the steps a) providing shade upper support structure at or proximate the shade top, b) providing at least one substantially vertically elongated shade support line extending downwardly from said upper support structure, c) and providing shade lower support structure at or proximate the shade bottom, d) elevating or lowering said shade lower support structure relative to said one or more support lines, e) and effectively securing said shade lower support structure to the line or lines at a selected height position relative to the line length above said lower support structure, f) said securing including effecting attachment of the line or lines to a support or support entirely below a slat defined by said lower support structure, g) whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure.
16. The method of claim 15 wherein said shade is provided in the form of a sequence of pleats, and said line or lines is or are located adjacent said pleats.
17. The method of claim 15 wherein the weight of the lowermost extent of the shade is carried by said shade lower support structure as sand lower support structure is elevated to shorten the height of the shade.
18. The method of claim 15 including employing multiple lines to support the shade lowermost support structure, said lines transferring loading to said supports.
19. The method of claim 15 including providing a spring associated with said support or supports.
20. The method of claim 15 wherein there are two of said supports, each defining holding mechanism.
21. Apparatus for controlling the vertical height of a window shade having a tap and bottom, which includes a) shade upper support structure at or proximate the shade top, b) at least one substantially vertically elongated shade support line extending downwardly from said upper support structure, c) and shade lower support structure at or proximate the shade bottom, d) said apparatus adapted for elevating or lowering said shade lower support structure relative to said one or more support line, e) a securing device for effectively securing said shade lower support structure to the line or lines at a selected height position relative to the line length above said lower support structure, said securing device effecting attachment of the line at a support below the level of said lower support structure, g) whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure effective securement to said line or lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2473764 CA2473764A1 (en) | 2004-07-12 | 2004-07-12 | Window covering height adjustment method and apparatus using traveling rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2473764 CA2473764A1 (en) | 2004-07-12 | 2004-07-12 | Window covering height adjustment method and apparatus using traveling rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2473764A1 true CA2473764A1 (en) | 2006-01-12 |
Family
ID=35610388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2473764 Abandoned CA2473764A1 (en) | 2004-07-12 | 2004-07-12 | Window covering height adjustment method and apparatus using traveling rotor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2473764A1 (en) |
-
2004
- 2004-07-12 CA CA 2473764 patent/CA2473764A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |