Electricity: circuit makers and breakers – Fluid pressure – Diaphragm
Reexamination Certificate
2006-02-23
2008-11-18
Friedhofer, Michael A (Department: 2832)
Electricity: circuit makers and breakers
Fluid pressure
Diaphragm
C200S0830SA, C200S0830SA, C200S449000, C200S451000
Reexamination Certificate
active
07453049
ABSTRACT:
A pressure switch includes an external force transmission mechanism for separating a cover from a housing. The cover and the external force transmission mechanism defines a first pressure chamber, and the housing and the external force transmission mechanism defines a second pressure chamber. In the second pressure chamber, a movable piece having first and second movable members arranged opposite to each other and one or more fixed contacts are disposed. The first and second movable members are connected to each other via a flat spring. A contact is disposed on the second movable member and functions as a movable contact. The external force transmission mechanism applies an external force to the first movable member to displace the first movable member, and the second movable member is reversed at the operating point of the first movable member, so that the movable contact is brought into contact with the fixed contact.
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Abe Kazuo
Ochiai Koichi
Tsumura Takashi
Warashina Isamu
Friedhofer Michael A
Sughrue & Mion, PLLC
Yamatake Corporation
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