Roller blind mounting and rolling system

Details Roller blind mounting and rolling system Roller blind mounting and rolling system

1988-08-05

1989-12-05

Johnson, Blair M.

Flexible or portable closure, partition, or panel

Roll type

With rotating means

1603231, A47G 502

Patent

active

048846180

ABSTRACT:
The present invention provides a roller blind construction comprising a flexible blind which is windable for lowering and raising the blind. The blind has a downward weighting which increases as it is lowered and the construction further includes a conuterbalancing coil spring which products an upward pull increasing in direct relation to and neutralizing the downward weighting without lifting the blind.

REFERENCES:
patent: 1605111 (1926-11-01), Holt et al.
patent: 2109112 (1938-02-01), Hanson
patent: 3854517 (1974-12-01), Nakamura
patent: 4379481 (1983-04-01), Juner et al.
patent: 4712599 (1987-12-01), Komaki

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