Electric quick-break switch with forced opening of the contacts

Details Electric quick-break switch with forced opening of the contacts Electric quick-break switch with forced opening of the contacts

1981-01-29

1982-08-31

Little, Willis

Electricity: circuit makers and breakers

Liquid contact

Time delay

200 67R, 200 67DB, 200 76, 200 70, 200243, H01H 332

Patent

active

043474152

ABSTRACT:
An electric switch wherein longitudinal depression of a rod in a first direction toggles a spring pivoted on the rod. This snaps a movable contact bridge extending transversely to the rod away from a set of stationary contacts to open normally closed contacts. If the snap action fails to separate the movable bridge from the stationary contacts, a pair of contact levers forces the opening of the normally closed contacts. The inner ends of the levers are pivotally mounted on opposing sides of the rod at locations displaced in the first direction from the spring. Stationary fulcrums on opposite sides of the rod rotate the levers upon displacement of the rod and cause the lugs extending from the outer ends of the rod to engage the movable contact bridge on opposing sides of the rod and to force the bridge to separate.

REFERENCES:
patent: 3967081 (1976-06-01), Portmann et al.

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