Electricity: circuit makers and breakers – Fluid pressure – Diaphragm
Patent
1979-06-06
1981-06-16
Tolin, Gerald P.
Electricity: circuit makers and breakers
Fluid pressure
Diaphragm
200 814, 200 83S, H01H 3534
Patent
active
042739764
ABSTRACT:
A switch device (10, 10') which is responsive to various pressures is disclosed. The device (10, 10') includes a housing (18, 18') and plurality of switches (102, 104, 106, 168, 170, 172). A flexible diaphragm (40, 40') is supported external of the housing (18, 18') and has a first face adapted to face a pressure source and a second face facing an external wall (56, 56') of the housing (18, 18'). A plurality of first magnets (46, 48, 50, 182, 184, 186) are connected to the diaphragm at different locations thereon. A plurality of second magnets (108, 110, 112, 174, 176, 178) are supported in the housing and are each connected to one of the switches for activating a respective switch. Each of the second magnets is disposed adjacent one of the first magnets to form a plurality of pairs of first and second magnets whereby the motion of one of the first magnets of one of said pairs causes the second magnet of said last-mentioned pair to move and activate one of the switches to which it is connected. A plurality of biasing springs (74, 76, 150, 152, 164) bias the diaphragm away from the end wall of the housing. Each of the springs provides a biasing force at a different location on the diaphragm and at least two of the biasing springs have different biasing forces for biasing different portions of the diaphragm away from the housing with a different force.
REFERENCES:
patent: 2628296 (1953-02-01), Dillman
patent: 2869475 (1959-01-01), Bobo
patent: 3236963 (1966-02-01), Parmann
patent: 3368173 (1968-02-01), Wolford
patent: 3786210 (1974-01-01), Byam
patent: 3898405 (1975-08-01), Weber
Rose John F.
Thunselle James
Wolford Byron F.
Proximity Controls, Inc.
Tolin Gerald P.
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