Ladder drum for venetian blind

Details Ladder drum for venetian blind Ladder drum for venetian blind

2007-09-12

2010-02-23

Mitchell, Katherine W (Department: 3634)

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

C160S17700R, C160S17810R, C024S1320AA

Reexamination Certificate

active

07665503

ABSTRACT:
A ladder drum is mounted in a head rail of a Venetian blind for securing a ladder cord thereto, and includes a drum body installed on a tilt bar of the blind. An upper portion of the drum body is formed into an open-topped recess, which has two sidewalls interconnected by an end wall. A holder set is provided in the recess, such that a clearance is existed between the holder set and each of the sidewalls and a limiting space between the holder set and the end wall for receiving a securing element therein. The securing element is a rectangular frame has a rear end turnably received in the limiting space and a front end releasably engaged with a front side of the holder set to thereby firmly press two free ends of the ladder cord in the drum body against the two sidewalls of the recess.

REFERENCES:
patent: 3189082 (1965-06-01), Hennequin
patent: 4821789 (1989-04-01), Van Rens
patent: 5267598 (1993-12-01), Marocco
patent: 6095228 (2000-08-01), Liu
patent: 6745812 (2004-06-01), Liu et al.
patent: 6976522 (2005-12-01), Strand
patent: 7198089 (2007-04-01), Hsu
patent: 7249397 (2007-07-01), Abels et al.
patent: 7258297 (2007-08-01), Liu
patent: 7493932 (2009-02-01), Cheng
patent: 2002/0110778 (2002-08-01), Abels et al.

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