Spring-powered actuator

Details Spring-powered actuator Spring-powered actuator

E - Fixed Constructions

05

F

185/13, 268/37

E05F 1/08 (2006.01) A62C 2/24 (2006.01) F03G 1/08 (2006.01)

Patent

CA 1184949

ABSTRACT OF THE DISCLOSURE A spring-powered actuator especially for operating devices such as fire and/or smoke dampers, doors, hatches, vents, traps, valves and other devices having components which are movable between at least two positions. The spring-powered actuator of the invention comprises a longi- tudinally-displaceable re-wind screw which is rotatable to recharge the spring of the actuator, and a tilting element on the screw which is mounted for tilting movement with respect to the screw axis to allow longitudinal movement of the re-wind screw so as to permit rapid and reliable re- lease of energy stored in the spring. When used in a com- bination fire and smoke damper, it thus opens or closes the blades of the latter.

415337

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