Roll-up shutter structure

Details Roll-up shutter structure Roll-up shutter structure

1987-12-18

1989-12-05

Chin-Shue, Alvin C.

Flexible or portable closure, partition, or panel

Roll type

With guides or fabric edge holders

160190, 160310, E06B 938

Patent

active

048846171

ABSTRACT:
A device having a shutter windable around a spindle and especially adapted to close a bay or other opening by the unwinding of the shutter, the same having flexible side edges which project beyond the shutter plane and which are retained with reduced friction in substantially continuous guideways during the unwinding and winding up of the shutter, that shutter edges may disengage from their guideways when subjected to a predetermined pull transversely to guideway. Each guideway has near and upstream of the shutter spindle an access passage through which the projecting edge of any shutter which has disengaged from the guideway can re-engage, as the shutter winds around its spindle, in that part of the particular guideway concerned which is disposed beyond the passage.

REFERENCES:
patent: 1694314 (1928-12-01), Dixson
patent: 1786054 (1930-12-01), Dixson
patent: 3116097 (1963-12-01), Novales
patent: 3237682 (1966-03-01), Davis
patent: 3512302 (1970-05-01), Sivin et al.
patent: 3878879 (1975-04-01), Manns
patent: 3981343 (1976-09-01), DeVito
patent: 4398585 (1983-08-01), Marlow
patent: 4478268 (1984-10-01), Palmer
patent: 4563034 (1986-01-01), Lamb
patent: 4586552 (1986-05-01), Labelle
patent: 4601320 (1986-07-01), Taylor
patent: 4690195 (1987-09-01), Taylor

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