Pressure switch with protection of the membrane against...

Details Pressure switch with protection of the membrane against... Pressure switch with protection of the membrane against...

2007-01-02

2007-01-02

Lee, Richard K. (Department: 2832)

Electricity: circuit makers and breakers

Electric switch details

Contact

C200S0830SA

Reexamination Certificate

active

11238546

ABSTRACT:
A pressure switch for pressures up to a maximum permissible pressure (pmax), with a housing (1) and a membrane (2), whereby the membrane is fastened in the housing. The membrane has an exposed face on which a pressure can act, and it is deformed when a pressure acts upon it. The pressure switch comprises a means (4) that converts the membrane deformation into a stroke, as well as an electric contact system that interacts with this means. The means causes a membrane deformation to actuate the electric contact system. The pressure switch also comprises a cast solid abutment member (5) that completely fills a cavity between an inner wall of the housing and the face of the membrane opposite the exposed face when the membrane is exposed to the maximum permissible pressure pmax.

REFERENCES:
patent: 3335242 (1967-08-01), Johnson
patent: 4145588 (1979-03-01), Orcutt
patent: 5296659 (1994-03-01), Potts et al.
patent: 6255609 (2001-07-01), Samuelson et al.
patent: 6410870 (2002-06-01), Nishizaki et al.
patent: 5975 (1944-06-01), None
patent: 1490817 (1970-12-01), None
patent: 2750419 (1981-02-01), None
patent: 3541298 (1987-02-01), None
patent: 2842620 (1989-06-01), None
patent: 3935298 (1991-04-01), None

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