Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1977-10-25
1979-05-29
Scott, James R.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
200159B, 200275, 200292, 200330, 200340, H01H 1370
Patent
active
041568028
ABSTRACT:
An inexpensive, yet highly reliable, electrical switch contact assembly with excellent human factors considerations includes an electrical contact assembly having a plurality of switch positions, a cover plate disposed adjacent the switch contact assembly with an aperture for each switch position, and at each switch position an apertured key, a follower disposed within the key aperture, a cap containing the follower within the key aperture and key and follower springs biasing the key and follower respectively to provide separate and independent control over key actuation and switch contact closure forces. A contact engagement post of the follower may be accurately positioned above a switch contact notwithstanding variations in spring characteristics an a curvilinear engagement surface assures optimum distributed switch closure pressure for high reliability switch actuation. Switch contact patterns with oppositely disposed and interdigitated circularly and radially extending portions assure the security of multiple switch closure engagements.
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Gilano Michael N.
Hayes James C.
Scott James R.
Telaris Telecommunications Inc.
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