Thermally actuated latch for electrical circuits
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United States of America Patent
Stats
-
May 24, 1988
Grant Date -
N/A
app pub date -
Apr 17, 1987
filing date -
Apr 17, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thermally actuated latch for electrical circuits is permanently operative for completing an electrical circuit upon exposure to a predetermined elevated temperature. The latch includes a fixed contact, a movable contact arm which is biased toward the fixed contact, a movable contact on the movable contact arm, and a deformable pellet. The deformable pellet communicates with the movable contact arm through a communicator disc to normally maintain the movable contact in spaced relation with the fixed contact. The pellet is deformable to a disposition of reduced profile upon exposure to a predetermined elevated temperature to allow the movable contact to be resiliently moved into engagement with the fixed contact in order to complete an electrical circuit connected to the latch.
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