Electricity: circuit makers and breakers – Snap – Double snap
Patent
1996-06-20
1997-09-30
Walczak, David J.
Electricity: circuit makers and breakers
Snap
Double snap
200409, 200520, 200535, 2003072, 200341, H01H 518
Patent
active
056718411
ABSTRACT:
A switching mechanism comprising a housing, a spring, first and second movable contacts mechanically attached to the spring, first and second substantially fixed contacts attached to the housing, and an actuator is provided. The spring comprises first and second edges substantially fixed to the housing. In a rest position the first and second movable contacts do not electrically contact the first and second substantially fixed contacts, respectively. The actuator centrally actuates the spring to cause the first and second movable contacts to move in the same direction as the central portion of the spring and to electrically contact the first and second substantially fixed contacts.
The spring is preferably a snap spring shaped in the form of a cross comprising a column member and first and second protruding wings. The first and second movable contacts are preferably mechanically and electrically connected to the first and second protruding wings respectively.
The actuator preferably includes a ball, a substantially cylindrical portion having a first outer diameter, and a seal having a second outer diameter. The seal is preferably an O-ring seal which is designed to fit tightly around the substantially cylindrical device and tightly inside the housing.
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Design Guide, Pollak Precision Ball Switches, and two accompanying figures No date.
Calculagraph Co.
Tencza, Jr. Walter J.
Walczak David J.
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