Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1982-06-17
1983-12-27
Goldberg, E. A.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
200159B, 200292, H01H 312
Patent
active
044232942
ABSTRACT:
A laminate switch assembly or keyboard comprises a tensioned dome switch plate having improved durability which provides tactile feedback to the operator. Each tensioned dome on the switch plate is aligned with an electrical contact area formed on a printed circuit board so that depression of the dome completes an electrical circuit through the aligned contact area. Each tensioned dome is surrounded by a reinforcing collar or band which relieves the stresses normally produced in the transition area between the switch domes and the remaining planar portion of the switch plate.
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Page of an advertisement by Cherry Electrical Products Corp., entitled "One-Of-A-Kind" Cherry Custom Membrane Keyboards.
Walser Richard J.
Wyant Gary M.
Ginsburg Morris
Goldberg E. A.
The Hall Company
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