Cord winding device for a blind

Details Cord winding device for a blind Cord winding device for a blind

2005-07-19

2005-07-19

Purol, David (Department: 3634)

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

Reexamination Certificate

active

06918424

ABSTRACT:
A cord winding device includes a cord adapted to lift and lower a blind, a winding screw which is rotatable for winding and unwinding the cord and which has a screw thread portion, and a guide body sleeved on the winding screw. The guide body and the winding screw make an axial movement relative to each other upon rotation of the winding screw. The guide body includes an inner thread threadedly engaging the screw thread portion, and a cord-pulling member formed with a hole. The cord passes through the hole, and has one end fixed to the winding screw. The cord is pulled by the cord-pulling member to be wound up around the screw thread portion upon rotation of the winding screw.

REFERENCES:
patent: 2765030 (1956-10-01), Bechtler
patent: 5070927 (1991-12-01), Chen
patent: 5103888 (1992-04-01), Nakamura
patent: 5318090 (1994-06-01), Chen
patent: 5328113 (1994-07-01), de Chevron Villette et al.
patent: 5645118 (1997-07-01), Lagarde
patent: 6158494 (2000-12-01), Huang
patent: 6659156 (2003-12-01), Wen et al.

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