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Class Information
Number: 49/4
Name: Movable or removable closures > Thermal releaser or actuator > Pull cable with fusible connection
Description: Device wherein the retaining means includes a cable which is grasped by hand to move the closure, e.g., against gravity or a biasing means, and wherein thermally responsive device will release the cable and permit the closure to return.

Patents under this class:

Patent Number Title Of Patent Date Issued
8181392 Automatic gate arm damage prevention system May. 22, 2012
7574826 Emergency door opening actuator Aug. 18, 2009
5377448 Door positioning system Jan. 3, 1995
5245879 Fail-safe fire door release mechanism having automatic reset Sep. 21, 1993
4648310 Smoke ventilation apparatus and method Mar. 10, 1987
4517765 Remotely controllable vent door May. 21, 1985
4104834 Fire vent Aug. 8, 1978
4068417 Fire vent Jan. 17, 1978
3977134 Vent closure arrangement Aug. 31, 1976

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