Limit switch

Details Limit switch Limit switch

1979-01-31

1981-01-27

Marcus, Stephen

Electricity: circuit makers and breakers

Limit switch

200153T, H01H 316

Patent

active

042477441

ABSTRACT:
A limit switch comprises a frame having an elongated extruded metallic base, a lead screw shaft supported on the frame and coupled with a drive source for rotation, and a pair of control discs threadably engaged upon the lead screw shaft and restrained from rotation therewith, such that rotation of the lead screw shaft causes the control discs to axially advance along the shaft. Switch assemblies are carried by the base and located in the path of axial advancement of the control discs for operation in repsonse to selective engagement with and disengagement from the control discs. The control discs are individually adjustable along the lead screw shaft, and the switch assemblies are individually adjustable along the base, to thereby permit a wide range of operation for the limit switch.

REFERENCES:
patent: 1151990 (1915-08-01), Balzer
patent: 2431929 (1947-12-01), Goff
patent: 2951920 (1960-09-01), Miller
patent: 2964601 (1960-12-01), Stockwell
patent: 3825809 (1974-07-01), Gatland et al.

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