Electricity: circuit makers and breakers – Fluid pressure – Diaphragm
Patent
1978-12-06
1980-07-29
Tolin, Gerald P.
Electricity: circuit makers and breakers
Fluid pressure
Diaphragm
200 83J, 200 82R, 200246, 200250, H01H 3532
Patent
active
042152542
ABSTRACT:
A high-quality pressure switch comprising a member moving according to pressure applied and a moving contact piece to act as a switch. The member has an end portion contained in a switch case to engage with said moving contact piece and remain in touch with a spring bearing and further a flanged portion contacting a stopper built in said switch case when a spring incorporated in said spring bearing is compressed by the end portion actuated by the travel of the member moving in a direction of a switch chamber when subjected to pressure. The moving contact is fitted with a moving contact on one end thereof and has the other end secured to a terminal elastically and in a freely movable condition to swing and move the moving contact piece pivoting on the end against the resilient force of spring according to the travel of said member, whereby said moving contact is separated from a fixed contact to switch off. The operating fulcrum of the moving contact piece is thus preferably supported in a freely movable state and further elastically, which frees the moving contact piece from bending and/or distorting stress working thereon when pressed excessively by the member.
REFERENCES:
patent: 3459914 (1969-08-01), Gustavson
patent: 3683137 (1972-08-01), Stiltner
patent: 4049935 (1977-09-01), Gruber
patent: 4121074 (1978-10-01), Orcutt
Niles Parts Co., Ltd.
Tolin Gerald P.
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