Sump pump switch

Details Sump pump switch Sump pump switch

1977-03-14

1980-04-01

Moore, Christopher K.

Electricity: circuit makers and breakers

Special application

Liquid or moisture responsive

200275, H01H 1328

Patent

active

041963253

ABSTRACT:
A sump pump switch has a swingable insulating yoke carrying flexible contact strips which are pivotally connected to the yoke for relative lateral movement. The movable contacts swingably engage in notches in electric terminal members. Over-center mechanism moves the yoke and contact strips between two positions, in one of which the movable contacts engage fixed contacts. Such engagement, and disengagement, is maintained by the flexibility of the movable contact strip, in the area of dead center position of the over-center mechanism and the resiliency of the contact strips absorbs energy on switch closing movement.

REFERENCES:
patent: 2749400 (1966-06-01), Chichester
patent: 3989915 (1976-11-01), Nishikawa
patent: 3996436 (1976-12-01), Barney

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