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  Cord control device for roman shadeUSPTO Application #: 20060196611Title: Cord control device for roman shade Abstract: A cord control device for a window covering includes a frame mounted in a housing for the window covering. The cord control device further includes a roller having a first roller half and a second roller half that is rotatably supported by the frame and that is releasably engaged with the first roller half. At least one of the first roller half and the second roller half includes a cord hole, allowing an end of a cord to extend through a cord hole of the frame and the cord hole of the roller. The end of the cord is tied up to an outer side of the roller, and another end of the cord is attached to a shade body of the window covering, such that the roller and the cord turn jointly in a retracting direction or a releasing direction for retracting or releasing the shade body. (end of abstract)
Agent: Rosenberg, Klein & Lee - Ellicott City, MD, US Inventor: Kuentin Ko USPTO Applicaton #: 20060196611 - Class: 160084010 (USPTO) Related Patent Categories: Flexible Or Portable Closure, Partition, Or Panel, Pleating Type The Patent Description & Claims data below is from USPTO Patent Application 20060196611. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a cord control device for a shade. In particular, the present invention relates to a cord control device for a Roman shade. [0003] 2. Description of the Related Art [0004] Window coverings are used for shielding from sunlight and for privacy as well as decoration. FIG. 1 of the drawings illustrates a conventional Roman shade comprising a shade body (not shown) with a plurality of rings or loops (not shown) attached to a rear side thereof and a top assembly 1 that includes a housing 10 and a cord control device 11 for moving the shade body out of the housing 10 or into the housing 10 when not in use. The cord control device 11 comprises a frame 111 fixed in the housing 10, a roller 112 rotatably supported by the frame 111, and a spindle 117 extending through the roller 112 to turn therewith. A control member 116 is attached to an end of the housing 10 for sealing the housing 10. A pull string 118 is mounted to the control member 116 and operably connected to the spindle 117 such that the spindle 117 and the roller 112 rotate when the pull string 118 is pulled. A cord (not shown) is extended through the loops of the shade body. Further, the cord is extended through a cord hole 113 in the frame 111 and wound around the roller 112, with an end of the cord being tied up to a notch 114 in the roller 112. An end of the roller 112 is sealed by an end cap 115 to prevent disengagement of the knotted end of the cord. Thus, the shade body is coiled into or out of the housing 10 when the pull string 118 is pulled in a retracting direction or a releasing direction. [0005] However, an end cap 115 is required for positioning the knotted end of the cord, resulting in an increase in the time and cost. Further, the end cap 115 has to be detached and then attached to the end of the roller 112 while mounting the cord. Further, before the last step of tying the end of the cord up to the notch 114 of the roller 112, the end of the cord has to be held by the installer, which is inconvenient. SUMMARY OF THE INVENTION [0006] An objective of the present invention is to provide a cord control device that allows easy mounting of the cord while cutting the cost. [0007] A cord control device for a window covering in accordance with the present invention comprises a frame mounted in a housing for the window covering. The cord control device further comprises a roller including a first roller half and a second roller half. The second roller half is rotatably supported by the frame. The first roller half is releasably engaged with the second roller half. [0008] At least one of the first roller half and the second roller half includes a cord hole, allowing an end of a cord to extend through a cord hole of the frame and the cord hole of the at least one of the first roller half and the second roller half. The end of the cord is tied up to an outer side of the roller, and another end of the cord is attached to a shade body of the window covering, such that the roller and the cord turn jointly in a retracting direction or a releasing direction for retracting or releasing the shade body. [0009] Preferably, at least one of the first roller half and the second roller half includes at least one rib on an inner side thereof to reinforce the structure of the roller. [0010] Preferably, one of the first roller half and the second roller half includes at least one mortise, and the other of the first roller half and the second roller half includes at least one tenon for releasably engaging with the at least one mortise. [0011] Other objectives, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS [0012] FIG. 1 is an exploded perspective view of a Roman shade with a conventional cord control device. [0013] FIG. 2 is a perspective view of a cord control device for a Roman shade in accordance with the present invention. [0014] FIG. 3 is an exploded perspective view of the cord control device for a Roman shade in accordance with the present invention. [0015] FIG. 3A is an enlarged view of a circled portion in FIG. 3. [0016] FIG. 4 is a sectional view taken along plane A-A in FIG. 2. [0017] FIG. 5 is an exploded perspective view of a top assembly of a Roman shade and the cord control device in accordance with the present invention, wherein the shade body of the Roman shade is removed for clarity. [0018] FIG. 6 is a perspective view of the Roman shade. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0019] Referring to FIGS. 5 and 6, a Roman shade comprises a shade body 23 with a plurality of rings or loops (not shown) attached to a rear side thereof and a top assembly 3 including a housing 30 and a cord control device 2 for moving the shade body 23 out of the housing 30 or into the housing 30 when not in use. [0020] Referring to FIGS. 2 through 4, the cord control device 2 comprises a frame 21 fixed in the housing 30, a roller 22 rotatably supported by the frame 21, and a spindle 229 extending through the roller 22 to turn therewith. A control member 24 is attached to an end of the housing 30 for sealing the housing 30. A pull string 240 is mounted to the control member 24 and operably connected to the spindle 229 such that the spindle 229 and the roller 22 rotate when the pull string 240 is pulled. Continue reading... Full patent description for Cord control device for roman shade Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Cord control device for roman shade patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Cord control device for roman shade or other areas of interest. ### Previous Patent Application: Tire working tool Next Patent Application: Bottom up top down cordless shade Industry Class: Flexible or portable closure, partition, or panel ### FreshPatents.com Support Thank you for viewing the Cord control device for roman shade patent info. 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