Snap type thermally responsive switch device
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United States of America Patent
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-
May 14, 1985
Grant Date -
N/A
app pub date -
Nov 9, 1983
filing date -
Nov 24, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thermally responsive switch device includes; a bimetallic plate enclosed within a metallic enclosure in a cantilever manner and having a central dish-shaped portion for snap movement. The bimetallic plate carries a movable contact at one free end to be in making contact relationship with a fixed contact which is placed into the enclosure. A calibrator projection is provided with the enclosure to engage with the dish-shaped portion to exert point pressure between the contacts. A reinforcer extension is disposed in the enclosure and has one end secured to the inner side of the enclosure and its other end sandwiching the dish-shaped portion in cooperation with the projection so as to prevent the cantilever support end of the plate from being deformed irrespective of often repeated snap actions of the plate in response to the ambient temperature or the like.
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