Sheet shutter

Details Sheet shutter Sheet shutter

1989-02-22

1990-12-04

Purol, David M.

Flexible or portable closure, partition, or panel

Roll type

With rotating means

160133, 160264, E06B 956

Patent

active

049746588

ABSTRACT:
Disclosed herein is a sheet shutter which is a shutter of the type in which a sheet-form shielding material is lifted and lowered to be used as a partition of the entrance or passage of factory, warehouse or the like. The sheet shutter comprises (a) a pair of sheet guides erected parallel with a predetermined spacing therebetween, each sheet guide having an uppr end; (b) a sheet case provided between the upper ends of the sheet guides; (c) a take-up drum rotatably supported within the sheet case, the take-up drum having an interior space; (d) a flexible sheet having a top edge and both of side edges, the both side edges being guided by the sheet guides in such a manner that the flexible sheet is lifted and lowered, and the top edges being attached to the take-up drum; and (e) a motor for rotationally driving the take-up drum, and motor being fixed to the sheet case and accommodated in the interior space of the take-up drum.

REFERENCES:
patent: 3285089 (1966-11-01), Tsugawa
patent: 3430677 (1969-03-01), Pierce
patent: 3522834 (1970-08-01), Corcoran
patent: 3750740 (1973-08-01), Newman
patent: 4372367 (1983-02-01), Baldanello et al.
patent: 4615371 (1986-10-01), Clauss
patent: 4649980 (1987-03-01), Kunz
patent: 4690195 (1987-09-01), Taylor

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