Fluid pressure switch having a spring opposing the fluid pressur

Details Fluid pressure switch having a spring opposing the fluid pressur Fluid pressure switch having a spring opposing the fluid pressur

1987-01-21

1988-02-09

Tolin, G. P.

Electricity: circuit makers and breakers

Fluid pressure

Piston

200 83S, 200 82C, H01H 3538

Patent

active

047242892

ABSTRACT:
A pressure switch assembly includes an electric switch which is actuated in response to a preselected pressure in a pressure line. The assembly includes an activating rod which is engageable with the electric switch. The activating is acted upon by opposing forces from the pressure and a spring. The spring bears against a stop ring which is threadedly mounted so as to be displaceable in order to adjust the spring force. The stop ring is rotated by rotating a cover portion of the switch housing, the cover being connected to the stop ring. Thereafter, the cover is locked against rotation.

REFERENCES:
patent: 2418508 (1947-04-01), Goepfich
patent: 3043929 (1962-07-01), Guthrie
patent: 3619526 (1971-11-01), Riley
patent: 3953692 (1976-04-01), Amano
patent: 4532389 (1985-07-01), Woods

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