Roller blind assembly

Details Roller blind assembly Roller blind assembly

1987-05-27

1989-06-06

Johnson, Blair M.

Flexible or portable closure, partition, or panel

Plural and/or with rigid closure

Roll type

160 66, 160265, E06B 908

Patent

active

048362646

ABSTRACT:
A roller blind assembly in which the blind roller (10, 12, 14) is turnable, preferably by a motor, to raise and lower the blind along a track (28). To reduce friction and prevent jamming due to dirt or debris on the track, the lower end of the blind is linked (32) to an inertia device (30) preferably in the form of a tubular roller having a relatively high amount of inertia and mounted for rotation with guide wheels (34) at each end of the roller running in parallel tracks 28). The angular momentum developed by the roller (30) assists in drawing the blind over obstructions in the track (28) and is additional to any gravitational effects.

REFERENCES:
patent: 1556915 (1925-10-01), Cooley
patent: 3306345 (1967-02-01), Youngs
patent: 3878879 (1975-04-01), Manns
patent: 4433712 (1984-02-01), Mellon et al.

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