Roller assemblies for automatically winding and unwinding closur

Details Roller assemblies for automatically winding and unwinding closur Roller assemblies for automatically winding and unwinding closur

1990-08-03

1991-09-03

Purol, David M.

Flexible or portable closure, partition, or panel

Roll type

With rotating means

160 1, E06B 956

Patent

active

050444174

ABSTRACT:
Roller assemblies having a drum upon which a closure is wound and unwound and wherein a drive mechanism within the drum is meshed with a plurality of elongated ribs extending along the inner surface of the drum and wherein the limiting controls for the drive mechanism include a pair of travelling nuts which are also meshed with the ribs of the drum for mechanically actuating the limiting controls.

REFERENCES:
patent: 4342354 (1982-08-01), Leivenzon et al.
patent: 4411348 (1983-10-01), Fillion
patent: 4417185 (1983-11-01), Bullat
patent: 4615371 (1986-10-01), Clauss
patent: 4641700 (1987-02-01), Zveibil
patent: 4651940 (1987-03-01), Nakamura
patent: 4974658 (1990-12-01), Komatsu et al.

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