Sealed electric switch

Details Sealed electric switch Sealed electric switch

1979-03-06

1980-08-19

Marcus, Stephen

Electricity: circuit makers and breakers

Electric switch details

Cases and bases

H01H 904

Patent

active

042186021

ABSTRACT:
A one-piece seal for an electric switch for sealing the spaces between a pivotal switch actuator and its supporting frame and between such frame and the switch base. This seal comprises a generally rectangular molded member of resilient material having a bushing extending up into sealing engagement with the pivotal area of the actuator, a land on its upper surface locating and retaining the seal with respect to the aperture in the switch frame, a pair of lugs or pads on its bottom surface for locating and retaining the seal with respect to the switch base, a radius on each of the outwardly facing bights between these lugs and the planar bottom surface of the seal into which the sharp corners of the base bite to effect a tight seal, and thinner sections formed by recesses on opposite sides of the aforesaid land for receiving complementary shelf portions of the frame in combination with thicker side strips or ribs that are pinched between the frame and base for a tight seal. The seal is pinched between the frame and base and hugs the actuator around its pivot pin area to provide an economical but effective seal.

REFERENCES:
patent: 2633510 (1953-03-01), Schellman
patent: 2786359 (1957-03-01), Karlan et al.
patent: 3483345 (1969-12-01), Hults

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