Electricity: circuit makers and breakers – Electric switch details – Cases and bases
Patent
1985-04-05
1987-01-20
Marcus, Stephen
Electricity: circuit makers and breakers
Electric switch details
Cases and bases
200293, 200336, 200 5A, 200155R, 403361, H01H 904, H01H 308
Patent
active
046381333
ABSTRACT:
A rotary switch is provided by a molded knob having a circular top portion, a circular bottom portion and a circumferential flange between the top and bottom portion. The bottom portion includes a recess which is provided with a pair of crush ribs provided to secure a rotary switch pin within the recess. A circumferential channel is provided on the flange around the top portion of the knob with a stop tab provided in the channel. The molded knob is operatively associated with a top plate and a bottom plate, each plate including a plurality of apertures which receive a respective top portion of a molded knob. The bottom plate is provided with an offset portion which spaces the apertures in the bottom plate a predetermined distance from the apertures in the top plate, with dimples provided in the bottom plate to maintain a predetermined spacing of the plates at the locations of the apertures. The apertures in the top plate are sized to fit closely around the top portion of the molded knob while the apertures in the bottom plate are sized greater than the dimensions of the apertures in the top plate and less than the dimensions of the circumferential flange, with lock tab of being provided on the bottom plate and extending into each bottom aperture and providing a stop surface against which the stop tab will abut upon sufficient rotation of the knob. The top portion of the knob is provided with a slot which can be operated by a screwdriver or similar tool to move the knob to any of its available positions which is designated by an embossed arrow on the top of the knob.
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Dvorak Robert F.
Netolicky Charles E.
Golden Larry I.
Guttman Richard T.
Marcus Stephen
Sholl Linda J.
Square D Company
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