Single control system for operating top-down-bottom-up shades

Details Single control system for operating top-down-bottom-up shades Single control system for operating top-down-bottom-up shades

1997-02-06

1998-08-11

Johnson, Blair

Flexible or portable closure, partition, or panel

Pleating type

Multiple section unit

160115, 160167, 1601681R, A47H 500

Patent

active

057913900

ABSTRACT:
A lift system for top-down, bottom-up window shades operated by a single control is provided. The preferred embodiment of the invention is compatible with, but not limited to, clutch operated shades whose cords are wound onto a shaft within the headrail. It will work with any shade that presently has top-down-bottom-up capability, using any method of lift.

REFERENCES:
patent: 169502 (1875-11-01), Wideman
patent: 340960 (1886-04-01), Stevens
patent: 2110983 (1938-03-01), Carver
patent: 2765030 (1956-10-01), Bechtler
patent: 4799524 (1989-01-01), Gruermonprez
patent: 4813468 (1989-03-01), Fraser
patent: 5351737 (1994-10-01), Hoshiyama

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