Pull cord device and window covering including the same

Details Pull cord device and window covering including the same Pull cord device and window covering including the same

2006-04-03

2008-08-05

Glessner, Brian E. (Department: 3634)

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

C160S178200

Reexamination Certificate

active

07406995

ABSTRACT:
A pull cord device for controlling raising and lowering of a base rail of a window covering includes a locking wheel having a toothed segment turnable between locked and unlocked positions to engage and disengage from a cord spool, respectively, a cord-release controlling member having a cord retaining region to engage a pull cord to be movable along a linear running path when the pull cord is pulled in the unlocked position, a guideway disposed in the locking wheel, and including an angularly extending first route and a looped route, a guided member having a key end disposed in the guideway, and a linkage coupling the controlling member with the locking wheel such that when the controlling member is moved, the locking wheel is turned from the locked position to the unlocked position, and such that, in the unlocked position, the cord retaining region remains unmoved in each of regions in the looped route.

REFERENCES:
patent: 5482100 (1996-01-01), Kuhar
patent: 6024154 (2000-02-01), Wang et al.
patent: 6289965 (2001-09-01), Ruggles
patent: 6644375 (2003-11-01), Palmer
patent: 6761203 (2004-07-01), Huang
patent: 7025107 (2006-04-01), Ciuca
patent: 2002/0157796 (2002-10-01), Judkins
patent: 2004/0108079 (2004-06-01), Gilmore et al.
patent: 2007/0227677 (2007-10-01), Yu et al.

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