Sequence switch with forced disconnect mechanism

Details Sequence switch with forced disconnect mechanism Sequence switch with forced disconnect mechanism

1995-02-17

1996-10-29

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Reciprocating contact

200448, H01H 1518, H01H 530

Patent

active

055698905

ABSTRACT:
A forced disconnect sequence switch is provided with a plunger that has two surfaces at its bottom portion. The two surfaces are disposed in planes which are displaced from each other so that cams can be actuated at different positions of travel of the plunger. The cams are sequentially rotatable to provide a positive break characteristic to the sequence switch. If either of the movable contact structures becomes welded to an associated stationary contact structure, each of the movable contacts are mechanically urged into separation sequentially by the cooperative action of the first and second surfaces of the plunger and their associated cams.

REFERENCES:
patent: 1831368 (1931-11-01), Rubel
patent: 3017471 (1962-01-01), Karch
patent: 3192329 (1965-06-01), Murrle
patent: 3612793 (1971-10-01), Roeser
patent: 3764761 (1973-10-01), Poltorak et al.
patent: 3769474 (1973-10-01), Deubel et al.
patent: 3973094 (1976-08-01), Kuhn
patent: 4216358 (1980-08-01), Brozille
patent: 4347415 (1982-08-01), Falchi
patent: 5283406 (1994-02-01), Olson

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