Linear snap action operating mechanism and an electrical switch

Details Linear snap action operating mechanism and an electrical switch Linear snap action operating mechanism and an electrical switch

1989-05-24

1991-04-09

Luebke, Renee S.

Electricity: circuit makers and breakers

Snap

Double snap

H01H 1518

Patent

active

050066820

ABSTRACT:
A snap action operating mechanism for electrical switches and the like includes a hollow cylindrical housing closed at the ends. A rod extends through one end and is slidable within the housing, while the opposite end of the housing is connected to the switch to be operated. A trip bar projects radially outward in diametrically opposed directions from the rod through longitudinal slots in the housing. A pair of compression springs are disposed within the housing, one on each side of the trip bar. Latch units, each comprising a pair of pivoted latch members, alternately engage opposite ends of the housing to restrain movement of the housing in that direction. Thus, initial longitudinal movement of the rod in the direction of the engaged latch unit results in compression of one of the springs until the trip bar engages a camming surfaces on the engaged latch members, and rotates them clear of the housing. The housing is then accelerated rapidly by the energy stored in the compressed spring. The other latch unit then engages the other end of the housing for similar linear snap action when the rod is moved in the opposite direction.

REFERENCES:
patent: 601276 (1898-03-01), Platt
patent: 1362661 (1920-12-01), Zimmerman
patent: 3053950 (1962-09-01), Dobes
patent: 3264431 (1962-11-01), Hodgson
patent: 3522397 (1970-07-01), Dodson et al.
patent: 4086452 (1978-04-01), Collins
patent: 4800242 (1989-01-01), Yin

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