Pressure operated switch construction and method of making

Details Pressure operated switch construction and method of making Pressure operated switch construction and method of making

1990-02-14

1992-08-04

Scott, J. R.

Electricity: circuit makers and breakers

Fluid pressure

Diaphragm

200 83WM, 200 83P, 200 83S, H01H 3534

Patent

active

051361299

ABSTRACT:
A pressure operated switch construction and method of making the same are provided, the pressure operated switch construction comprising a housing having an external surface and carrying an electrical switch unit and a diaphragm assembly therein, the housing having an opening passing through the external surface thereof, the electrical switch unit having opposed sides and an opening passing therethrough in alignment with the opening of the housing, and a compression spring unit carried by the housing and being operatively associated with the electrical switch unit and the diaphragm assembly to control the operation thereof in relation to the compression setting of the compression spring unit, the compression spring unit comprising a retainer operatively interconnected to the electrical switch unit, an actuator carried by the housing and a compression spring having opposed ends respectively bearing against the actuator and the retainer, the retainer having an intermediate part disposed in the opening of the housing and having a surface and a projection extending from the surface and passing through the opening of the electrical switch unit in one direction so that the surface thereof faces one of the sides thereof whereby the retainer is removable from the electrical switch unit by merely moving the retainer in the direction opposite to the one direction.

REFERENCES:
patent: 3230328 (1966-01-01), Chapin
patent: 3249712 (1966-05-01), Rhodes et al.
patent: 3267232 (1966-08-01), Chapin
patent: 3598946 (1971-08-01), Hanssen et al.
patent: 4081637 (1978-03-01), Stearley et al.
patent: 4104495 (1978-08-01), Jones et al.
patent: 4192980 (1980-03-01), Kothe
patent: 4262178 (1981-04-01), Berlin, Jr.

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