Latch for a butterfly damper

Details Latch for a butterfly damper Latch for a butterfly damper

F - Mech Eng,Light,Heat,Weapons

23

N

137/4.5

F23N 3/04 (2006.01)

Patent

CA 1193941

Abstract of the Disclosure An air/smoke/fire damper including a frame and a pair of damper blades pivoted for rotation within the frame between an open and a closed position, and comprising a heat responsive latch including mounting straps associated with each of the damper blades; a fusible link engaging one of the mounting straps; and a hook pivotally associated with the other mounting strap and extending over the edges of the damper blades and into engagement with the fusible link. Also, a locking mechanism for restraining the blades in the closed position upon release of the heat responsive latch, and a retaining lug for preventing blade buckling in the closed position.

410525

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