Latch for a butterfly damper
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 2, 1984
Issued Date -
N/A
app pub date -
Feb 22, 1982
filing date -
May 2, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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