Shutter

Details Shutter Shutter

1985-06-19

1987-12-15

Britts, Ramon S.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Roll type

160321, 160176R, A47G 502, E06B 9202

Patent

active

047125993

ABSTRACT:
A shutter is provided which is moved up and down by the use of the urging force of a take-up spring for turning a take-up shaft that winds up a number of slats and the weight of the slats. These slats are mutually coupled vertically expandably and a number of slits are formed in expandable portions of individual slats. The shutter includes a slit open/close means for expanding and contracting the slats to open/close the slits.

REFERENCES:
patent: 2564197 (1951-08-01), Dobkin
patent: 2872977 (1959-02-01), Pagliaccetti et al.
patent: 3102580 (1963-09-01), Greegor
patent: 3842892 (1974-10-01), Stieler
patent: 4493356 (1985-01-01), Hermann et al.
patent: 4503899 (1985-03-01), Forquer

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