E - Fixed Constructions – 05 – F
Patent
E - Fixed Constructions
05
F
268/2
E05F 1/08 (2006.01) E06B 9/68 (2006.01) E06B 9/74 (2006.01) E06B 9/82 (2006.01)
Patent
CA 1088580
ABSTRACT OF THE DISCLOSURE There is provided a roll-type door having horizontally positioned slats which is normally held by operator means in an open position against gravity. Said operator means includes fusible means responding to a predetermined heat level for releasing said door and permitting same to move under gravity in closing direction. Said operator means includes a device for initiating said door movement immedi- ately after the response of said fusible means to said heat level and further includes a connection to braking means for insuring against too rapid a descent by the door. The door may be manually opened if desired or mechanical means, power driven if desired, may be provided for opening or assisting in opening such door. In the latter case, clutch means are provided for disconnecting same immediately upon breakdown of said fusible means whereby said door will be enabled to close freely in response to gravity subject on to control by the above-mentioned braking means.
305475
Bailey Morris W.
Carlton Donald G.
Luby John J.
Kirby Eades Gale Baker
Overhead Door Corporation
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