Rotary operator

Details Rotary operator Rotary operator

1979-02-23

1981-04-21

Truhe, J. V.

Electricity: circuit makers and breakers

Multiple circuit control

Operating means

74567, 200153L, H01H 300

Patent

active

042634865

ABSTRACT:
A rotary operator for use with an electrical contact block includes a housing having a base portion and a hollow cylindrical extension having external threads on an end opposite the base portion, and a rotatable stem assembly disposed in the base portion and extension. The stem assembly comprises a control knob secured to one end of an intermediate member and a cam member secured to the opposite end. A clamp ring threaded to the extension retains stem assembly in the housing. Multiple position, and more particularly, two and three position cam members having novel camming surfaces are disclosed.

REFERENCES:
patent: 2748208 (1956-05-01), Koertge
patent: 2798908 (1957-07-01), Frank et al.
patent: 4052582 (1977-10-01), Mullen
patent: 4175220 (1979-11-01), Johnston et al.

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