Liftable window covering with multiple lifting cords and a single pull cord
First Claim
1. Apparatus comprising:
- a housing;
a liftable window covering descending from said housing, with said housing extending across said liftable window covering;
a spool rotatably mounted at an end of said housing;
a plurality of lifting cords, with a proximal end of each of said lifting cords attached to said spool to wrap around a peripheral surface thereof, with each of said lifting cords extending within said housing, and with a distal end of each of said lifting cords descending from said housing in attachment with said liftable window covering for lifting said liftable window covering;
guide means adjacent said spool for guiding said lifting cords into wrapping engagement with said spool; and
a pull cord with a proximal end thereof attached to wrap around a peripheral surface of said spool and with a distal end descending from said housing, wherein said pull cord and said lifting cords are arranged on said spool so that said lifting cords are wound onto said spool by rotation of said spool as said pull cord is unwound from said spool.
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Accused Products
Abstract
A liftable window closure, such as a Venetian blind or Roman shade, is lifted and held in place by two or more lifting cords, each of which is wrapped and unwrapped from a section of a spool. The spool is in turn rotated by a single pull cord, which is held in place by a brake mechanism. Each lifting cord is guided onto its spool section by a guide structure directing the cord to a central part of the spool section. A housing extends across the top of the liftable window covering, with the lifting cords extending within the housing and downward through the window covering. In a Venetian blind, a mechanism for tilting the slats extends above the lifting cords, which are held downward by the guide structure.
65 Citations
20 Claims
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1. Apparatus comprising:
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a housing; a liftable window covering descending from said housing, with said housing extending across said liftable window covering; a spool rotatably mounted at an end of said housing; a plurality of lifting cords, with a proximal end of each of said lifting cords attached to said spool to wrap around a peripheral surface thereof, with each of said lifting cords extending within said housing, and with a distal end of each of said lifting cords descending from said housing in attachment with said liftable window covering for lifting said liftable window covering; guide means adjacent said spool for guiding said lifting cords into wrapping engagement with said spool; and a pull cord with a proximal end thereof attached to wrap around a peripheral surface of said spool and with a distal end descending from said housing, wherein said pull cord and said lifting cords are arranged on said spool so that said lifting cords are wound onto said spool by rotation of said spool as said pull cord is unwound from said spool. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Apparatus for lifting a window covering, wherein said apparatus comprises:
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a spool having a plurality of spool sections separated by intervening flanges; a plurality of lifting cords, with a proximal end of each of said lifting cords attached within one of said spool sections to wrap around a peripheral surface thereof; a bracket assembly rotatably mounting said spool, wherein said bracket assembly includes guide means adjacent said spool for guiding each of said lifting cords into wrapping engagement with a central region of an adjacent one of said spool sections; a pull cord with a proximal end thereof attached within one of said spool sections to wrap around a peripheral surface thereof, wherein said pull cord and said lifting cords are arranged on said spool so that said lifting cords are wound onto said spool by rotation of said spool as said pull cord is unwound from said spool. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification