Pressure switch with snap element
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United States of America Patent
Stats
-
Jul 22, 1980
Grant Date -
N/A
app pub date -
Oct 13, 1978
filing date -
Oct 13, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pressure switch comprising a housing, a first contact mounted in the housing and a support mounted in the housing in spaced relationship to the first contact. A pressure responsive member is mounted in the housing for moving a second contact into and out of engagement with the first contact and with the support. A first spring urges the pressure responsive member in opposition to the fluid pressure acting on the pressure responsive member. The pressure responsive member includes a bistable spring which carries the second contact. The bistable spring augments the first spring as the pressure responsive member moves from a low pressure position toward a high pressure position and opposes the first spring as the pressure responsive member moves from the high pressure position toward the low pressure position.
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