Electricity: circuit makers and breakers – Multiple circuit control – Reciprocating contact
Patent
1990-03-26
1991-12-24
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Reciprocating contact
200242, H01H 112, H01H 1502
Patent
active
050755170
ABSTRACT:
A tappet, in particular for cooperating with camshafts in electrical changeover switches, circuit breakers or the like, comprises a body provided with a cavity opening into two opposing faces of the body and containing, mobile against a spring, a generally flat contact element the opposing free ends of which project from the cavity and from the body so as to cooperate with fixed contacts generally arranged to the sides of the body and rigid with the casing of the changeover switch or the like. The movable contact is subjected to the action of an element or slider movable within the cavity and arranged to cooperate with the cams of a camshaft. According to the invention, the slider comprises projecting elements slidable in a guided manner in guide slots or tracks provided in the body of the tappet during its movement within the recess of the latter, with consequent displacement of the movable contact from an inoperative position to a working position in which it cooperates with the fixed contacts of the changeover switch or the like, the movable contact rocking relative to the slider by rotating about an axis on being displaced from its working position.
REFERENCES:
patent: 3928740 (1975-12-01), Alsch
patent: 4277662 (1981-07-01), Lewandowski
patent: 4650935 (1987-03-01), Ootsuka et al.
patent: 4839475 (1989-06-01), Wilkinson et al.
patent: 4861949 (1989-08-01), Bortolloni et al.
Bremas S.p.A.
Scott J. R.
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