US20090256021A1 - Assembly to wind cords in a motorized window covering - Google Patents
Assembly to wind cords in a motorized window covering Download PDFInfo
- Publication number
- US20090256021A1 US20090256021A1 US12/148,072 US14807208A US2009256021A1 US 20090256021 A1 US20090256021 A1 US 20090256021A1 US 14807208 A US14807208 A US 14807208A US 2009256021 A1 US2009256021 A1 US 2009256021A1
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- US
- United States
- Prior art keywords
- winding reel
- motor
- cords
- threaded
- assembly
- 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
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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
- E06B9/28—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
- E06B9/303—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape
-
- 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
-
- 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
- E06B2009/3222—Cordless, i.e. user interface without cords
-
- 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
Definitions
- This invention relates to a new assembly to wind the cords in a motorized window covering, such as a blind, shade, curtain, drapery, etc.
- the key objective of this invention is to wind the cords without overlapping, bunching up, or tangling.
- window coverings it is normally preferred to wind cords in an even, regular manner in order for the blind to operate consistently and for the bottom-rail, or end-slat, to remain level as it rises, or moves.
- Conventional methods of winding cords are fraught with problems: tangling, bunching up, overlapping, etc. There are known methods for dealing with these problems. But there isn't any known thread-related reel mechanism that prevents bunching in a manner taught by this invention.
- a list of closely related, but different, patents are listed below.
- the invention relates to an innovative assembly to wind cords in a motorized window covering.
- This invention has a variety of aims:
- the invention uses a winding reel that is substantially in the shape of a tube.
- a motor is substantially enclosed within the winding reel.
- a driver is used to couple to rotational motion of the motor's output shaft to the winding reel.
- the driver is coupled to the output shaft of the motor in a manner that causes the winding reel to rotate synchronously with the motor's output shaft.
- the driver also allows the winding reel to slide axially.
- a threaded adapter is connected to the winding reel, and a separate threaded fitting is used. The threads on the threaded adapter are mated to the threads on the threaded fitting, and the threaded fitting is affixed to an object that is external to the winding reel and motor.
- a crown may be employed to support one end of the winding reel.
- the crown may also drive limit switches If a crown is used, it would have a length that is sufficient to substantially support the winding reel throughout the winding reel's limits of travel. The result is an assembly that winds cords in a predictable, consistent manner.
- a second embodiment of the invention also uses a winding reel that is substantially in the shape of a tube.
- a motor is substantially enclosed within the winding reel.
- a driver is used to couple to rotational motion of the motor's output shaft to the winding reel.
- the driver is rotationally and axially coupled to the output shaft of the motor, which causes the winding reel to move axially and rotationally with the motor's output shaft.
- a threaded adapter is fixed to the winding reel, and a separate threaded fitting is used.
- the threaded adapter is mated to the threaded fitting, and the threaded fitting is affixed to an object that is external to the winding reel. As the motor spins the winding reel and motor are both driven axially.
- the motor is mounted to a mounting bracket that is free to slide to slide axially as the motors output shaft spins.
- the result is that the motor and winding reel move axially, together, as the winding reel spins, to effectuate consistent winding of the cords.
- the mounting bracket may be fixed in position, and the coupling between the motor mount and motor may be sliding coupled. This alternate configuration performs the same function.
- FIG. 1 is a perspective view of a complete blind.
- FIG. 2 is an overhead view of the headrail 1 of a blind.
- FIG. 3 is an overhead view of the headrail 1 of a blind. This drawing has the motor removed, and does not include the winding reel 28 . This figure shows additional details that may have been covered by the winding reel 28 and motor 19 .
- FIG. 4 is view of a complete headrail 1 from an end-view perspective.
- FIG. 5 is a side view of the diverter 34 .
- FIG. 6 is a top view of the diverter 34 .
- FIG. 7 is a perspective view of the diverter 34 .
- FIG. 8 is an alternate perspective view of the diverter 34 .
- FIG. 9 is an illustration that shows how the lift cords 32 33 and tilt cords 41 42 could be routed in a configuration that has one lift cord 33 per lift point.
- FIG. 10 is an illustration that shows how the lift cords 32 33 and tilt cords 41 42 could be routed in a configuration that has two lift cords 32 33 per lift point.
- a variety of methods have been employed to wind cords in a uniform, consistent manner.
- the common method used today uses a reel that is approximately in the shape of a cone.
- the cone is constructed from a low-friction material.
- the cone-shaped reel spins as it adds windings.
- As it spins the new windings push the existing windings toward the narrow end of the cone-shaped reel to make room for the new windings.
- Another method of achieving even, consistent windings uses a thin tape, in place of the lift cords.
- the tape is thin enough that the layers of tape can be wrapped on top of one another.
- the reel is approximately as wide as the tape.
- Each new winding lies directly over of the previous winding, such that the winding occurs in a consistent manner.
- Another method uses a reel that can freely slide axially as it spins. This configuration causes the windings to wrap evenly because each new winding of the cords causes the reel to shift axially as new windings are added. As a result, the cords wind evenly.
- Another method involves employing a threaded mechanism to drive the reel such that it will move axially as the reel spins. This invention employs a threaded mechanism in a new and innovative manner that is not present in the prior art.
- the preferred embodiment describes a venetian blind.
- the invention is applicable to any type of covering for an architectural opening, that employs a plurality of parallel slats 2 including venetian blinds, vertical blinds, cloth blinds such as those that suspend fabric slats between two sheer fabric facings, and other types of coverings with a slats 2 .
- FIG. 1 An image of the preferred embodiment is shown in FIG. 1 .
- the preferred embodiment is one particular venetian blind, however, practical application other embodiments of venetian blinds, and to other types of blinds, can be carried out by those skilled in the art.
- FIG. 2 shows a close-up view of the headrail 1 and the other components that are installed in the headrail 1 .
- This embodiment utilizes a single tubular motor 19 to serve the purpose of driving both the lift and tilt functions of the blind.
- the motor 19 is substantially contained within the headrail 1 .
- the type of motor 19 selected for the preferred embodiment is commonly referred to as a tubular motor 19 .
- These motors are commonly used today in various window coverings, awnings, projection screens, etc.
- the tubular motor 19 used in this embodiment is bi-directional and includes a self-contained gearbox, brake, and limit switches. Components on the motor 19 include a mounting shaft 81 , a crown 35 which drives the limit switches, limit switch set screws 15 16 , and an output shaft 21 , as shown in FIG.
- the motor 19 also has a four-sided, square, mounting shaft 81 .
- this mounting shaft 81 is inserted into a complementary hole in the motor mount 11 . Then a pin is placed through the hole in the mounting shaft 81 to keep the mounting shaft 81 from sliding out of the motor mount 11 .
- the motor 19 is mounted rigidly to the headrail 1 at one end, via a motor mount 11 .
- a winding reel 28 is placed around the motor 19 and a driver 34 connects the output shaft 21 of the motor to the winding reel 28 so that the power of the motor 19 causes the winding reel 28 to rotate around the motor 19 .
- the winding reel 28 is a substantially in the shape of a tube.
- FIG. 3 is a closer up view the same headrail 1 without the winding reel 28 to reveal the components inside.
- FIG. 3 also has the motor 19 removed to reveal the components inside the headrail 1 .
- FIG. 4 is an end-view of the same headrail 1 of FIG. 2 .
- the headrail 1 itself in this embodiment is made from extruded aluminum.
- the headrail 1 has symmetrical ridges 47 48 near the bottom of the headrail 1 profile that are an integrated part of the extrusion profile. These ridges 47 48 serve the function of holding the motor mount 11 and threaded fitting mount 24 in place.
- the motor mount 11 and threaded fitting mount 24 both have a tab that snaps into a hole in the headrail 1 . This tab prevents the motor mount 11 and threaded fitting mount 24 from sliding within the channel.
- Other methods of mounting the motor mount 1 and threaded fitting mount 24 are possible. These methods may include, but are not limited to screws, rivets, adhesives, brazing soldering, welding, pressure fittings, etc.
- the motor mount 11 for the motor 19 , and the threaded fitting mount 24 are both connected in this manner.
- the threaded fitting mount 24 doesn't attach directly to the motor 19 .
- the threaded fitting mount 24 has a round, threaded hole in it.
- a threaded fitting 26 is placed through the hole in the threaded fitting mount 24 .
- a standard, off-the-shelf bolt is used as the threaded fitting 26 .
- a nut 27 and washers 30 40 are used in this embodiment to secure the threaded fitting 26 in place.
- a threaded adapter 31 is installed onto the threaded fitting 26 .
- the threaded adapter 31 in this embodiment has internal threads that match the external threads of the threaded fitting 26 .
- the winding reel 28 and the threaded adapter 31 are fixed to each other.
- the threaded fitting 26 and threaded adapter 31 serve the purpose of causing the winding reel 28 to travel axially as the winding reel 28 spins. This axially movement allows the lift cord 33 to wind evenly because a vacant section of the winding reel 28 will be presented to each new length of lift cord 33 that approaches the winding reel 28 , as the winding reel 28 spins. The result is that the bottomrail 3 remains level as it rises.
- the driver 34 couples the output shaft 21 of the motor 19 to the winding reel 28 .
- the output shafts 21 of tubular motors 19 typically have two flat sides that are parallel to each other and two rounded sides that are opposite each other.
- the driver 34 fits onto the output shaft 21 and is normally held in place with a clip that fits into a groove in the end of the output shaft 21 .
- the driver in this embodiment 34 has physical contours on its exterior surface that fit complementary physical contours on the interior of the winding reel 28 . This arrangement rotationally connects the motor 19 to the winding reel 28 . No screws, or rivets, or other rigidly connecting devices are used to connect the driver 34 to the winding reel 28 .
- the winding reel 28 is allowed to slide axially over the driver 34 .
- the second end of the winding reel 28 fits around the crown 35 on the motor 19 .
- the crown 35 on the motor 19 is driven by the winding reel 28 .
- the crown 35 also serves the function of supporting the end of the lift tube 28 .
- the lift tube 28 is allowed to slide axially over the crown 35 . Consequently the crown 35 is long enough to support the winding reel 28 throughout the total distance that the winding reel 28 may axially travel.
- This embodiment uses a crown 35 that is that is integrated into the motor 19 . It is normal for the crown 35 to also drive the motor's limit switches.
- the motor 19 There are two limit-switch set screws 15 16 on the motor 19 .
- the first set screw 15 determines that maximum clockwise position of the motor 19 and the second set screw 16 determines the maximum counterclockwise position of the motor 19 .
- the rotational limits of the motor 19 can be established by setting the screws 15 , 16 to the appropriate position. When the motor 19 reaches a predetermined position, as determined by the set screws 15 16 , the motor 19 stops.
- the 33 lift cords are attached to the winding reel 28 .
- Many different means of attaching cords 32 33 41 42 are possible.
- a common method to attach cords 32 33 41 42 to winding reels 28 is to first mount the cords 32 33 41 42 to the winding reel using an adhesive tape that has a chemistry that is compatible with the cords 32 33 41 42 . Then a clip is placed over the adhesive tape. The clip fits substantially around the winding reel 28 . Finally, the cords 32 33 41 42 are wrapped around the tube a few times, to diminish any pressure on the tape.
- An alternate method that is used by this embodiment uses a winding reel 28 with ribs that run along its length. A hole is drilled through these ridges at each location that a cord 32 33 41 42 is connected. The cord 32 33 41 42 is fed through the hole. Then the cord 32 33 41 42 is either knotted, or a small metal crimp is pressure-fitted onto the cord 32 33 41 42 so that the end of the cord 32 33 41 42 cannot slip through the hole
- the lift cord 33 runs vertically from the headrail 1 down to the bottom of the blind.
- the lift cord 33 cattaches to the bottomrail 3 and performs the function of lifting the bottomrail 3 .
- Some venetian blinds are built such that they lift the bottomrail 3 at just two lift points. However, wider blinds may have additional lift points interposed between the lift points that are at end of the blind.
- the preferred embodiment illustrates a lift cord 33 configuration that employs one lift cord 33 at each lift point.
- One end of the lift cord 32 is attached to the bottomrail 3 .
- the lift cord 32 is then routed up through a hole in each of the blind slats 2 .
- the diverter 8 After being routed through a hole in each of the blind slats 2 the lift cord 33 is routed through a hole in the diverter 8 , which brings the cord through the bottom of the headrail 1 .
- the diverter 8 has seven routings holes in it. The routing holes provide a path to that the lift cords 32 33 and tilt cords 41 42 can be routed through the diverter 8 , allowing them to pass through the headrail 1 .
- the seven routing holes make it possible for one diverter 8 to accommodate a variety of different slat widths and different routing configurations.
- the diverter 8 of the preferred embodiment is illustrated in FIG. 5 , FIG. 6 , FIG. 7 , and FIG. 8 . Each of the illustrations in FIG. 5 , FIG. 6 , FIG.
- FIG. 7 and FIG. 8 are the same part, but are shown from different angles.
- the lift cord 32 is then connected to the winding reel 28 . This routing method is illustrated in FIG. 9 .
- Another method employs dual-lift-cords at each lift point.
- the dual-lift-cord method doesn't normally utilize slats 2 with holes through them. Instead the lift cords 32 33 , are routed with one lift cord 32 33 on each side of the slats 2 . This is commonly referred to as the routeless method. Both lift cords 32 33 wind around the winding reel 28 . In the routeless, dual-lift-cord method, care must be taken to prevent the interference and overlapping of the two lift cords 32 33 .
- FIG. 10 illustrates how this configuration might be routed. Consistent, even winding of dual cords 32 33 from the same lift point is achieved by diverting one of the lift cords 32 33 .
- This method causes the lift cords 32 33 to wind around the winding reel 28 at different points along the axis of the winding reel 28 .
- a diverter 8 has a diverting loop 9 that is used to redirect one of the lift cords to a different section of the winding reel 28 .
- Each of the lift cords 32 33 are also attached to the winding reel at different points relative to axis of the winding reel 32 33 .
- Many other lift cord embodiments may also be employed to consistently wind dual lift cords 32 33 .
- Venetian blinds typically have two or more ladderbraids to effectuate the tilting function.
- Ladderbraid consists of two tilt cords 41 , 42 and a plurality of cross-members that connect the two tilt cords 41 , 42 .
- Each slat 2 of the blind rests on a separate cross-member of the ladderbraid.
- Tilt cords 41 42 are responsible for controlling the angle of the slats 2 .
- the tilting is normally accomplished by effectively lifting one of the tilt cords 41 42 higher, or further, than the other tilt cord 41 42 .
- Many blinds have just two ladderbraids—one at each end of the blind. However, wider windows often have additional ladderbraids interposed between the ladderbraids at each end. Each of the ladderbraids normally runs vertically from the headrail 1 down to the bottomrail 3 of the blind. Those skilled in the art can determine how many ladderbraids are needed for a particular application.
- Slats 2 are a group of parallel members that allow light to pass when the slats 2 are angled in a particular direction, but which substantially block light when the angle of the slats 2 has changed. These parallel members may be called slats, vanes, ribbons, strips, planks, blades, or other names. However, here they are referred to simply as slats 2 . Throughout the description, the function of changing the physical location, or position, of the slats 2 is referred to as lift, or lifting. The function of changing the angle of the slats 2 is referred to as tilt, or tilting.
- Ladderbraid is described in the preferred embodiment because ladderbraid is commonly used in venetian blinds.
- many other types of cords, or linkages may be employed to control the angle of the slats 2 .
- the slats 2 are commonly hung from rotating member.
- the angle of the rotating member is commonly driven with cords or chain-type linkages.
- cloth blinds such as those that suspend fabric slats between two sheer fabric facings
- the sheer fabric facings perform the same function as the ladderbraid and tilt cords.
- Other types of blinds use other types of mechanical linkages to connect each of the individual slats. In each case the tilting is controlled by controlling the position of two relative position of each edge of the slats.
- it is possible to control the angle of slats 2 by controlling just one slat edge.
- the common practice is to control both slat edges simultaneously.
- Tilt cords are discussed throughout the preferred embodiment.
- Tilt cord could be any of many types of connecting devices. This could include, but is not limited to belts, chains, straps, tapes, webbing, direct linkages, rods, connector pieces, cloth sheets, wires, etc.
- the tilt cords could be solid pieces, or flexible pieces, or a combination of the two. Many embodiments are possible.
- the end of the first tilt cord 41 42 is attached to a first side of the bottomrail 3 .
- the second tilt cord 41 42 is attached to the second side of the bottomrail 3 .
- the tilt cords extend vertically up from the bottomrail 3 .
- a plurality of parallel cross-members connect the two tilt cords 41 42 . Normally one slat is placed upon each cross-member of the ladderbraid. Sometimes the ladderbraid has an additional cross-member that runs across the top of each slat 2 , in addition to the cross-member that is below each slat 2 .
- tilt cords 41 42 There are two tilt cords 41 42 .
- a first tilt cord 41 is routed up through the bottom of the headrail 1 , then the first tilt cord 41 is routed around the top of the winding reel 28 , then back down through a hole in the headrail 1 .
- the tilt cord 41 rests on the winding reel 28 .
- the first tilt cord 41 is then connected to the second tilt cord 42 .
- the two tilt cords 41 42 are normally connected at a point just below the slat 2 that is nearest to the headrail 1 . They can be connected with a small metal band that can be crimped to hold the two lift cords 41 42 together.
- tilt cords 41 42 For illustrative purposes just one pair of tilt cords 41 42 are displayed in FIG. 2 . However, there may be additional sets of tilt cords 41 42 needed to control the blind. Those skilled in the art can determine how many tilt cords 41 42 are necessary for a particular application.
- a second embodiment maintains many similarities to the preferred embodiment that has been previously described.
- the winding reel 28 and the motor 19 are coupled so that they travel axially together.
- the driver 34 and winding reel 28 are connected with a screw, or rivet.
- the driver 34 is also coupled to the motor 19 .
- the threaded adapter 31 is mated to the non-moving threaded fitting 26 which causes the winding reel 28 to travel axially as the threaded adapter 31 spins.
- the motor mount 11 is slidingly connected to the headrail 1 . The resulting configuration causes the winding reel 28 to travel axially as it spins and allows the lift cords 32 33 to wind evenly.
- the motor mount 11 may be fixed to the headrail 1 , and the motor mount 11 and motor 2 may be sliding coupled.
- This alternate configuration of the second embodiment allows the winding reel 28 to travel axially as it spins, and perform the same function. Only two embodiments are discussed, although many other embodiments are possible.
Abstract
An assembly for winding cords in a motorized window covering with a headrail having a length suitable for extending between opposite sides of an architectural opening, a winding reel that is substantially in the shape of a tube, a motor that fits substantially within the winding reel, a driver that is rotationally coupled to the output shaft of the motor that allows the winding reel to slide axially with respect to the driver, a threaded adapter that has a threaded segment that is substantially fixed to the winding reel, a threaded fitting that has threads that mesh with the threaded adapter such that the winding reel travels axially as it spins, and a crown that allows the winding reel to slide axially with respect to the crown throughout the winding reel's limits of travel.
Description
- Not Applicable
- Not Applicable
- Not Applicable
- This invention relates to a new assembly to wind the cords in a motorized window covering, such as a blind, shade, curtain, drapery, etc. The key objective of this invention is to wind the cords without overlapping, bunching up, or tangling. In window coverings it is normally preferred to wind cords in an even, regular manner in order for the blind to operate consistently and for the bottom-rail, or end-slat, to remain level as it rises, or moves. Conventional methods of winding cords are fraught with problems: tangling, bunching up, overlapping, etc. There are known methods for dealing with these problems. But there isn't any known thread-related reel mechanism that prevents bunching in a manner taught by this invention. A list of closely related, but different, patents are listed below.
-
U.S. Patent Numbers Issue Date Inventor 1,808,455 June, 1931 Duncanson 1,978,152 October, 1934 Ward 3,310,099 March, 1967 Hunter, et. al. 3,603,372 September, 1971 Dietzsch 4,623,012 November, 1986 Rude, et. al. 4,726,410 February, 1988 Fresh 5,150,846 September, 1992 Giust et. al. 5,328,113 July, 1994 Villette, et. al. 6,158,494 December, 2000 Huang 6,230,784 May, 2001 Sanz 6,736,184 May, 2004 Eaton - The invention relates to an innovative assembly to wind cords in a motorized window covering. This invention has a variety of aims:
-
- winds cords evenly and consistently without overlap, tangling, or bunching up does not require a cone reel system, tape lift cords, or a floating reel system requires minimum route space
- applicable to many different types of motorized window coverings
- can be used on many different sizes of architectural openings
- can be used with tubular motors
- is functionally reliable
This invention of patent-able novelty and utility accomplishes these and many other objectives.
- In one embodiment, the invention uses a winding reel that is substantially in the shape of a tube. A motor is substantially enclosed within the winding reel. To couple to rotational motion of the motor's output shaft to the winding reel a driver is used. The driver is coupled to the output shaft of the motor in a manner that causes the winding reel to rotate synchronously with the motor's output shaft. The driver also allows the winding reel to slide axially. A threaded adapter is connected to the winding reel, and a separate threaded fitting is used. The threads on the threaded adapter are mated to the threads on the threaded fitting, and the threaded fitting is affixed to an object that is external to the winding reel and motor. This causes the winding reel to travel axially as the motor spins. A crown may be employed to support one end of the winding reel. The crown may also drive limit switches If a crown is used, it would have a length that is sufficient to substantially support the winding reel throughout the winding reel's limits of travel. The result is an assembly that winds cords in a predictable, consistent manner.
- A second embodiment of the invention also uses a winding reel that is substantially in the shape of a tube. A motor is substantially enclosed within the winding reel. To couple to rotational motion of the motor's output shaft to the winding reel a driver is used. The driver is rotationally and axially coupled to the output shaft of the motor, which causes the winding reel to move axially and rotationally with the motor's output shaft. A threaded adapter is fixed to the winding reel, and a separate threaded fitting is used. The threaded adapter is mated to the threaded fitting, and the threaded fitting is affixed to an object that is external to the winding reel. As the motor spins the winding reel and motor are both driven axially. The motor is mounted to a mounting bracket that is free to slide to slide axially as the motors output shaft spins. The result is that the motor and winding reel move axially, together, as the winding reel spins, to effectuate consistent winding of the cords. Alternatively the mounting bracket may be fixed in position, and the coupling between the motor mount and motor may be sliding coupled. This alternate configuration performs the same function.
- Other embodiments of the invention can be created, but are not described.
-
FIG. 1 is a perspective view of a complete blind. -
FIG. 2 is an overhead view of theheadrail 1 of a blind. -
FIG. 3 is an overhead view of theheadrail 1 of a blind. This drawing has the motor removed, and does not include thewinding reel 28. This figure shows additional details that may have been covered by thewinding reel 28 andmotor 19. -
FIG. 4 is view of acomplete headrail 1 from an end-view perspective. -
FIG. 5 is a side view of thediverter 34. -
FIG. 6 is a top view of thediverter 34. -
FIG. 7 is a perspective view of thediverter 34. -
FIG. 8 is an alternate perspective view of thediverter 34. -
FIG. 9 is an illustration that shows how thelift cords 32 33 andtilt cords 41 42 could be routed in a configuration that has onelift cord 33 per lift point. -
FIG. 10 is an illustration that shows how thelift cords 32 33 andtilt cords 41 42 could be routed in a configuration that has twolift cords 32 33 per lift point. - Equivalent reference numerals are used to refer to identify similar parts throughout the several views of the drawings.
- A variety of methods have been employed to wind cords in a uniform, consistent manner. The common method used today uses a reel that is approximately in the shape of a cone. The cone is constructed from a low-friction material. The cone-shaped reel spins as it adds windings. As it spins the new windings push the existing windings toward the narrow end of the cone-shaped reel to make room for the new windings. As a result, there is always a vacant area on the reel for new windings, and the windings never overlap. Another method of achieving even, consistent windings uses a thin tape, in place of the lift cords. The tape is thin enough that the layers of tape can be wrapped on top of one another. The reel is approximately as wide as the tape. Each new winding lies directly over of the previous winding, such that the winding occurs in a consistent manner. Another method uses a reel that can freely slide axially as it spins. This configuration causes the windings to wrap evenly because each new winding of the cords causes the reel to shift axially as new windings are added. As a result, the cords wind evenly. Another method involves employing a threaded mechanism to drive the reel such that it will move axially as the reel spins. This invention employs a threaded mechanism in a new and innovative manner that is not present in the prior art.
- The preferred embodiment describes a venetian blind. However the invention is applicable to any type of covering for an architectural opening, that employs a plurality of
parallel slats 2 including venetian blinds, vertical blinds, cloth blinds such as those that suspend fabric slats between two sheer fabric facings, and other types of coverings with aslats 2. - Many different embodiments are possible. An image of the preferred embodiment is shown in
FIG. 1 . The preferred embodiment is one particular venetian blind, however, practical application other embodiments of venetian blinds, and to other types of blinds, can be carried out by those skilled in the art. -
FIG. 2 shows a close-up view of theheadrail 1 and the other components that are installed in theheadrail 1. This embodiment utilizes asingle tubular motor 19 to serve the purpose of driving both the lift and tilt functions of the blind. Themotor 19 is substantially contained within theheadrail 1. The type ofmotor 19 selected for the preferred embodiment is commonly referred to as atubular motor 19. These motors are commonly used today in various window coverings, awnings, projection screens, etc. Thetubular motor 19 used in this embodiment is bi-directional and includes a self-contained gearbox, brake, and limit switches. Components on themotor 19 include a mountingshaft 81, acrown 35 which drives the limit switches, limit switch setscrews 15 16, and anoutput shaft 21, as shown inFIG. 3 . Themotor 19 also has a four-sided, square, mountingshaft 81. In this embodiment this mountingshaft 81 is inserted into a complementary hole in themotor mount 11. Then a pin is placed through the hole in the mountingshaft 81 to keep the mountingshaft 81 from sliding out of themotor mount 11. - The
motor 19 is mounted rigidly to theheadrail 1 at one end, via amotor mount 11. A windingreel 28 is placed around themotor 19 and adriver 34 connects theoutput shaft 21 of the motor to the windingreel 28 so that the power of themotor 19 causes the windingreel 28 to rotate around themotor 19. The windingreel 28 is a substantially in the shape of a tube.FIG. 3 is a closer up view thesame headrail 1 without the windingreel 28 to reveal the components inside.FIG. 3 also has themotor 19 removed to reveal the components inside theheadrail 1.FIG. 4 is an end-view of thesame headrail 1 ofFIG. 2 . - The
headrail 1 itself in this embodiment is made from extruded aluminum. Theheadrail 1 hassymmetrical ridges 47 48 near the bottom of theheadrail 1 profile that are an integrated part of the extrusion profile. Theseridges 47 48 serve the function of holding themotor mount 11 and threadedfitting mount 24 in place. Themotor mount 11 and threadedfitting mount 24 both have a tab that snaps into a hole in theheadrail 1. This tab prevents themotor mount 11 and threadedfitting mount 24 from sliding within the channel. Other methods of mounting themotor mount 1 and threadedfitting mount 24 are possible. These methods may include, but are not limited to screws, rivets, adhesives, brazing soldering, welding, pressure fittings, etc. - The
motor mount 11 for themotor 19, and the threadedfitting mount 24, are both connected in this manner. However, the threadedfitting mount 24 doesn't attach directly to themotor 19. Instead, the threadedfitting mount 24 has a round, threaded hole in it. A threadedfitting 26 is placed through the hole in the threadedfitting mount 24. In this embodiment a standard, off-the-shelf bolt is used as the threadedfitting 26. Anut 27 andwashers 30 40 are used in this embodiment to secure the threaded fitting 26 in place. Onto the threadedfitting 26, a threadedadapter 31 is installed. The threadedadapter 31 in this embodiment has internal threads that match the external threads of the threadedfitting 26. The windingreel 28 and the threadedadapter 31 are fixed to each other. - The threaded
fitting 26 and threadedadapter 31 serve the purpose of causing the windingreel 28 to travel axially as the windingreel 28 spins. This axially movement allows thelift cord 33 to wind evenly because a vacant section of the windingreel 28 will be presented to each new length oflift cord 33 that approaches the windingreel 28, as the windingreel 28 spins. The result is that thebottomrail 3 remains level as it rises. - To link the power of the
motor 19 to the winding reel 28 adriver 34 is used. Thedriver 34 couples theoutput shaft 21 of themotor 19 to the windingreel 28. Theoutput shafts 21 oftubular motors 19 typically have two flat sides that are parallel to each other and two rounded sides that are opposite each other. Thedriver 34 fits onto theoutput shaft 21 and is normally held in place with a clip that fits into a groove in the end of theoutput shaft 21. The driver in thisembodiment 34 has physical contours on its exterior surface that fit complementary physical contours on the interior of the windingreel 28. This arrangement rotationally connects themotor 19 to the windingreel 28. No screws, or rivets, or other rigidly connecting devices are used to connect thedriver 34 to the windingreel 28. The windingreel 28 is allowed to slide axially over thedriver 34. - The second end of the winding
reel 28 fits around thecrown 35 on themotor 19. Thecrown 35 on themotor 19 is driven by the windingreel 28. Thecrown 35 also serves the function of supporting the end of thelift tube 28. Thelift tube 28 is allowed to slide axially over thecrown 35. Consequently thecrown 35 is long enough to support the windingreel 28 throughout the total distance that the windingreel 28 may axially travel. This embodiment uses acrown 35 that is that is integrated into themotor 19. It is normal for thecrown 35 to also drive the motor's limit switches. - There are two limit-
switch set screws 15 16 on themotor 19. Thefirst set screw 15 determines that maximum clockwise position of themotor 19 and thesecond set screw 16 determines the maximum counterclockwise position of themotor 19. The rotational limits of themotor 19 can be established by setting thescrews motor 19 reaches a predetermined position, as determined by theset screws 15 16, themotor 19 stops. - The 33 lift cords are attached to the winding
reel 28. Many different means of attachingcords 32 33 41 42 are possible. A common method to attachcords 32 33 41 42 to windingreels 28 is to first mount thecords 32 33 41 42 to the winding reel using an adhesive tape that has a chemistry that is compatible with thecords 32 33 41 42. Then a clip is placed over the adhesive tape. The clip fits substantially around the windingreel 28. Finally, thecords 32 33 41 42 are wrapped around the tube a few times, to diminish any pressure on the tape. An alternate method that is used by this embodiment uses a windingreel 28 with ribs that run along its length. A hole is drilled through these ridges at each location that acord 32 33 41 42 is connected. Thecord 32 33 41 42 is fed through the hole. Then thecord 32 33 41 42 is either knotted, or a small metal crimp is pressure-fitted onto thecord 32 33 41 42 so that the end of thecord 32 33 41 42 cannot slip through the hole. - The
lift cord 33 runs vertically from theheadrail 1 down to the bottom of the blind. Thelift cord 33 cattaches to thebottomrail 3 and performs the function of lifting thebottomrail 3. Some venetian blinds are built such that they lift thebottomrail 3 at just two lift points. However, wider blinds may have additional lift points interposed between the lift points that are at end of the blind. The preferred embodiment illustrates alift cord 33 configuration that employs onelift cord 33 at each lift point. One end of thelift cord 32 is attached to thebottomrail 3. Thelift cord 32 is then routed up through a hole in each of theblind slats 2. After being routed through a hole in each of theblind slats 2 thelift cord 33 is routed through a hole in thediverter 8, which brings the cord through the bottom of theheadrail 1. Thediverter 8 has seven routings holes in it. The routing holes provide a path to that thelift cords 32 33 andtilt cords 41 42 can be routed through thediverter 8, allowing them to pass through theheadrail 1. The seven routing holes make it possible for onediverter 8 to accommodate a variety of different slat widths and different routing configurations. Thediverter 8 of the preferred embodiment is illustrated inFIG. 5 ,FIG. 6 ,FIG. 7 , andFIG. 8 . Each of the illustrations inFIG. 5 ,FIG. 6 ,FIG. 7 , andFIG. 8 are the same part, but are shown from different angles. After routing thelift cord 32 through the routing holes 88 in thediverter 8, thelift cord 32 is then connected to the windingreel 28. This routing method is illustrated inFIG. 9 . - Another method employs dual-lift-cords at each lift point. The dual-lift-cord method doesn't normally utilize
slats 2 with holes through them. Instead thelift cords 32 33, are routed with onelift cord 32 33 on each side of theslats 2. This is commonly referred to as the routeless method. Bothlift cords 32 33 wind around the windingreel 28. In the routeless, dual-lift-cord method, care must be taken to prevent the interference and overlapping of the twolift cords 32 33.FIG. 10 illustrates how this configuration might be routed. Consistent, even winding ofdual cords 32 33 from the same lift point is achieved by diverting one of thelift cords 32 33. This method causes thelift cords 32 33 to wind around the windingreel 28 at different points along the axis of the windingreel 28. Adiverter 8 has a divertingloop 9 that is used to redirect one of the lift cords to a different section of the windingreel 28. Each of thelift cords 32 33 are also attached to the winding reel at different points relative to axis of the windingreel 32 33. Many other lift cord embodiments may also be employed to consistently winddual lift cords 32 33. - The preferred embodiment is a venetian blind application, so the details described apply specifically to venetian blinds. Venetian blinds typically have two or more ladderbraids to effectuate the tilting function. Ladderbraid consists of two
tilt cords 41, 42 and a plurality of cross-members that connect the twotilt cords 41, 42. Eachslat 2 of the blind rests on a separate cross-member of the ladderbraid. -
Tilt cords 41 42 are responsible for controlling the angle of theslats 2. The tilting is normally accomplished by effectively lifting one of thetilt cords 41 42 higher, or further, than theother tilt cord 41 42. Many blinds have just two ladderbraids—one at each end of the blind. However, wider windows often have additional ladderbraids interposed between the ladderbraids at each end. Each of the ladderbraids normally runs vertically from theheadrail 1 down to thebottomrail 3 of the blind. Those skilled in the art can determine how many ladderbraids are needed for a particular application. -
Slats 2 are a group of parallel members that allow light to pass when theslats 2 are angled in a particular direction, but which substantially block light when the angle of theslats 2 has changed. These parallel members may be called slats, vanes, ribbons, strips, planks, blades, or other names. However, here they are referred to simply asslats 2. Throughout the description, the function of changing the physical location, or position, of theslats 2 is referred to as lift, or lifting. The function of changing the angle of theslats 2 is referred to as tilt, or tilting. - Ladderbraid is described in the preferred embodiment because ladderbraid is commonly used in venetian blinds. However, many other types of cords, or linkages may be employed to control the angle of the
slats 2. For example in a vertical blind theslats 2 are commonly hung from rotating member. The angle of the rotating member is commonly driven with cords or chain-type linkages. In cloth blinds such as those that suspend fabric slats between two sheer fabric facings, the sheer fabric facings perform the same function as the ladderbraid and tilt cords. Other types of blinds use other types of mechanical linkages to connect each of the individual slats. In each case the tilting is controlled by controlling the position of two relative position of each edge of the slats. Likewise, it is possible to control the angle ofslats 2 by controlling just one slat edge. However, for aesthetic reasons the common practice is to control both slat edges simultaneously. - Tilt cords are discussed throughout the preferred embodiment. Tilt cord could be any of many types of connecting devices. This could include, but is not limited to belts, chains, straps, tapes, webbing, direct linkages, rods, connector pieces, cloth sheets, wires, etc. The tilt cords could be solid pieces, or flexible pieces, or a combination of the two. Many embodiments are possible.
- In the preferred embodiment the end of the
first tilt cord 41 42 is attached to a first side of thebottomrail 3. Thesecond tilt cord 41 42 is attached to the second side of thebottomrail 3. The tilt cords extend vertically up from thebottomrail 3. A plurality of parallel cross-members connect the twotilt cords 41 42. Normally one slat is placed upon each cross-member of the ladderbraid. Sometimes the ladderbraid has an additional cross-member that runs across the top of eachslat 2, in addition to the cross-member that is below eachslat 2. - There are two
tilt cords 41 42. To mechanically connect thetilt cords 41 42 to themotor 19, afirst tilt cord 41 is routed up through the bottom of theheadrail 1, then thefirst tilt cord 41 is routed around the top of the windingreel 28, then back down through a hole in theheadrail 1. Thetilt cord 41 rests on the windingreel 28. After exiting theheadrail 1, thefirst tilt cord 41 is then connected to the second tilt cord 42. For aesthetic and functional reasons the twotilt cords 41 42 are normally connected at a point just below theslat 2 that is nearest to theheadrail 1. They can be connected with a small metal band that can be crimped to hold the twolift cords 41 42 together. - For illustrative purposes just one pair of
tilt cords 41 42 are displayed inFIG. 2 . However, there may be additional sets oftilt cords 41 42 needed to control the blind. Those skilled in the art can determine how many tiltcords 41 42 are necessary for a particular application. - A second embodiment maintains many similarities to the preferred embodiment that has been previously described. However, in the second embodiment the winding
reel 28 and themotor 19 are coupled so that they travel axially together. In this embodiment, thedriver 34 and windingreel 28 are connected with a screw, or rivet. Likewise, thedriver 34 is also coupled to themotor 19. As the windingreel 28 spins it causes the threadedadapter 31 to simultaneously spin. The threadedadapter 31 is mated to the non-moving threaded fitting 26 which causes the windingreel 28 to travel axially as the threadedadapter 31 spins. Themotor mount 11 is slidingly connected to theheadrail 1. The resulting configuration causes the windingreel 28 to travel axially as it spins and allows thelift cords 32 33 to wind evenly. - Alternatively the
motor mount 11 may be fixed to theheadrail 1, and themotor mount 11 andmotor 2 may be sliding coupled. This alternate configuration of the second embodiment allows the windingreel 28 to travel axially as it spins, and perform the same function. Only two embodiments are discussed, although many other embodiments are possible.
Claims (18)
1. An assembly for winding cords in a motorized window covering comprising:
a headrail, said headrail having a length suitable for extending between opposite sides of an architectural opening;
a winding reel, said winding reel that is substantially in the shape of a tube;
a motor, said motor that has an output shaft, said motor that fits substantially within said winding reel;
a driver, said driver that is rotationally coupled to said output shaft, said driver that is rotationally coupled to said winding reel, said driver that allows said winding reel to slide axially with respect to said driver;
a threaded adapter, said threaded adapter that has a threaded segment, said threaded adapter that is substantially fixed to said winding reel;
a threaded fitting, said threaded fitting that is substantially fixed in placed that has threads that mesh with said threaded adapter such that said winding reel travels axially as it spins;
a crown; said crown that allows said winding reel to slide axially with respect to said crown throughout said winding reel's limits of travel.
2. The assembly of claim 1 wherein one or a plurality of cords are attached to said winding reel.
3. The assembly of claim 1 wherein one or a plurality of cords slidingly contact said winding reel.
4. The assembly of claim 1 wherein said threaded adapter has internal threads and said threaded fitting has external threads.
5. The assembly of claim 1 wherein said threaded adapter has external threads and said threaded fitting has internal threads.
6. The assembly of claim 1 wherein one or a plurality of diverters guide one or a plurality of cords along predetermined paths.
7. An assembly for winding cords in a motorized window covering comprising:
a headrail, said headrail having a length suitable for extending between opposite sides of an architectural opening;
a winding reel, said winding reel that is substantially in the shape of a tube;
a motor, said motor that has an output shaft, said motor that fits substantially within said winding reel;
a driver, said driver that is substantially fixed to said output shaft;
a threaded adapter, said threaded adapter that is substantially fixed to said winding reel;
a threaded fitting, said threaded fitting that has threads that mesh with said threaded adapter such that said winding reel travels axially as it spins;
a motor mount; said motor mount that is slidingly attached to said motor, said motor mount that is fixed to said headrail.
8. The assembly of claim 7 wherein one or a plurality of cords are attached to said winding reel.
9. The assembly of claim 7 wherein one or a plurality of cords slidingly contact said winding reel.
10. The assembly of claim 7 wherein said threaded adapter has internal threads and said threaded fitting has external threads.
11. The assembly of claim 7 wherein said threaded adapter has external threads and said threaded fitting has internal threads.
12. The assembly of claim 7 wherein one or a plurality of diverters guide one or a plurality of cords along predetermined paths.
13. An assembly for winding cords in a motorized window covering comprising:
a headrail, said headrail having a length suitable for extending between opposite sides of an architectural opening;
a winding reel, said winding reel that is substantially in the shape of a tube;
a motor, said motor that has an output shaft, said motor that fits substantially within said winding reel;
a driver, said driver that is substantially fixed to said output shaft;
a threaded adapter, said threaded adapter that is substantially fixed to said winding reel;
a threaded fitting, said threaded fitting that has threads that mesh with said threaded adapter such that said winding reel travels axially as it spins;
a motor mount; said motor mount that is attached to said motor, said motor mount that is slidingly attached to said headrail.
14. The assembly of claim 13 wherein one or a plurality of cords are attached to said winding reel.
15. The assembly of claim 13 wherein one or a plurality of cords slidingly contact said winding reel.
16. The assembly of claim 13 wherein said threaded adapter has internal threads and said threaded fitting has external threads.
17. The assembly of claim 13 wherein said threaded adapter has external threads and said threaded fitting has internal threads.
18. The assembly of claim 13 wherein one or a plurality of diverters guide one or a plurality of cords along predetermined paths.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US12/148,072 US20090256021A1 (en) | 2008-04-15 | 2008-04-15 | Assembly to wind cords in a motorized window covering |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US12/148,072 US20090256021A1 (en) | 2008-04-15 | 2008-04-15 | Assembly to wind cords in a motorized window covering |
Publications (1)
Publication Number | Publication Date |
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US20090256021A1 true US20090256021A1 (en) | 2009-10-15 |
Family
ID=41163178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/148,072 Abandoned US20090256021A1 (en) | 2008-04-15 | 2008-04-15 | Assembly to wind cords in a motorized window covering |
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US (1) | US20090256021A1 (en) |
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WO2011150412A1 (en) * | 2010-05-28 | 2011-12-01 | Hunter Douglas Inc. | Architectural opening coverings powered by rotary motors |
US8723466B2 (en) | 2010-09-17 | 2014-05-13 | Lutron Electronics Co., Inc. | Motorized venetian blind system |
US9334688B2 (en) | 2011-10-03 | 2016-05-10 | Hunter Douglas Inc. | Control of architectural opening coverings |
US9347261B2 (en) | 2013-08-02 | 2016-05-24 | Lutron Electronics Co., Inc. | Adjustment mechanisms for shades |
US9399888B2 (en) | 2013-03-14 | 2016-07-26 | Hunter Douglas, Inc. | Methods and apparatus to control an architectural opening covering assembly |
US9611689B2 (en) | 2013-08-02 | 2017-04-04 | Lutron Electronics Co., Inc. | Motorized sheer shading system |
US20180230739A1 (en) * | 2016-07-25 | 2018-08-16 | Suzhou Hongren Window Decorations Co., Ltd. | Winding assembly and retractable curtain |
US20180230744A1 (en) * | 2016-07-25 | 2018-08-16 | Suzhou Hongren Window Decorations Co., Ltd. | Retracting means for retracting curtain cord and retractable curtain |
CN110205793A (en) * | 2019-04-30 | 2019-09-06 | 岭南师范学院 | A kind of Clothing Specialty student cloth fixed-length cutting device |
US10640228B2 (en) * | 2013-02-22 | 2020-05-05 | United Technologies Corporation | Auxiliary power unit mounting bracket |
US10648232B2 (en) | 2012-10-03 | 2020-05-12 | Hunter Douglas Inc. | Methods and apparatus to control an architectural opening covering assembly |
US20220325576A1 (en) * | 2021-04-12 | 2022-10-13 | Ching Feng Home Fashions Co., Ltd. | Cord winding assembly with sliding guide member and window blind using the cord winding assembly |
US11525300B1 (en) * | 2021-09-10 | 2022-12-13 | Ching Feng Home Fashions Co., Ltd. | Cord winding assembly with tilt members and window blind using the cord winding assembly |
US20220396999A1 (en) * | 2021-06-09 | 2022-12-15 | Tser Wen Chou | Window blind lifting and tilting system |
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US10718159B2 (en) | 2010-05-28 | 2020-07-21 | Hunter Douglas Inc. | Architectural opening coverings powered by rotary motors |
WO2011150412A1 (en) * | 2010-05-28 | 2011-12-01 | Hunter Douglas Inc. | Architectural opening coverings powered by rotary motors |
US9790739B2 (en) | 2010-05-28 | 2017-10-17 | Hunter Douglas Inc. | Architectural opening coverings powered by rotary motors |
US8723466B2 (en) | 2010-09-17 | 2014-05-13 | Lutron Electronics Co., Inc. | Motorized venetian blind system |
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US9765568B2 (en) | 2011-10-03 | 2017-09-19 | Hunter Douglas Inc. | Methods and apparatus to control architectural opening covering assemblies |
US10975619B2 (en) | 2011-10-03 | 2021-04-13 | Hunter Douglas Inc. | Methods and apparatus to control architectural opening covering assemblies |
US10202802B2 (en) | 2011-10-03 | 2019-02-12 | Hunter Douglas Inc. | Control of architectural opening coverings |
US10648232B2 (en) | 2012-10-03 | 2020-05-12 | Hunter Douglas Inc. | Methods and apparatus to control an architectural opening covering assembly |
US10640228B2 (en) * | 2013-02-22 | 2020-05-05 | United Technologies Corporation | Auxiliary power unit mounting bracket |
US9399888B2 (en) | 2013-03-14 | 2016-07-26 | Hunter Douglas, Inc. | Methods and apparatus to control an architectural opening covering assembly |
US11377905B2 (en) | 2013-03-14 | 2022-07-05 | Hunter Douglas Inc. | Methods and apparatus to control an architectural opening covering assembly |
US10590701B2 (en) | 2013-03-14 | 2020-03-17 | Hunter Douglas Inc. | Methods and apparatus to control an architectural opening covering assembly |
US10570661B2 (en) | 2013-08-02 | 2020-02-25 | Lutron Technology Company Llc | Motorized sheer shading system |
US11725454B2 (en) | 2013-08-02 | 2023-08-15 | Lutron Technology Company Llc | Motorized sheer shading system |
US9611689B2 (en) | 2013-08-02 | 2017-04-04 | Lutron Electronics Co., Inc. | Motorized sheer shading system |
US9347261B2 (en) | 2013-08-02 | 2016-05-24 | Lutron Electronics Co., Inc. | Adjustment mechanisms for shades |
US10787859B2 (en) * | 2016-07-25 | 2020-09-29 | Suzhou Hongren Window Decorations Co., Ltd. | Retracting means for retracting curtain cord and retractable curtain |
US10883307B2 (en) * | 2016-07-25 | 2021-01-05 | Suzhou Hongren Window Decorations Co., Ltd. | Winding assembly and retractable curtain |
US20180230744A1 (en) * | 2016-07-25 | 2018-08-16 | Suzhou Hongren Window Decorations Co., Ltd. | Retracting means for retracting curtain cord and retractable curtain |
US20180230739A1 (en) * | 2016-07-25 | 2018-08-16 | Suzhou Hongren Window Decorations Co., Ltd. | Winding assembly and retractable curtain |
CN110205793A (en) * | 2019-04-30 | 2019-09-06 | 岭南师范学院 | A kind of Clothing Specialty student cloth fixed-length cutting device |
US20220325576A1 (en) * | 2021-04-12 | 2022-10-13 | Ching Feng Home Fashions Co., Ltd. | Cord winding assembly with sliding guide member and window blind using the cord winding assembly |
US20220396999A1 (en) * | 2021-06-09 | 2022-12-15 | Tser Wen Chou | Window blind lifting and tilting system |
US11525300B1 (en) * | 2021-09-10 | 2022-12-13 | Ching Feng Home Fashions Co., Ltd. | Cord winding assembly with tilt members and window blind using the cord winding assembly |
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