Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1975-07-11
1977-10-25
Scott, James R.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
200159A, 200329, 200340, 235145R, H01H 1314, G06C 702
Patent
active
040557340
ABSTRACT:
A keyboard switch assembly having an apertured plate, a plurality of pushbuttons supported in the apertures and a hinge for so supporting the pushbuttons that is integral with both the panel and the pushbuttons. The hinge has a web extending between the panel and the pushbutton, and the web is formed with a plurality of grooved portions at which the web deforms in response to the reciprocable movement of the pushbutton within its associated aperture to permit a degree of reciprocable and lateral movement of the pushbutton within the aperture. Switch contacts having operative portions secured to the pushbutton so that the contacts are moved to make or break an electric circuit in response to reciprocable movement of the pushbutton relative the panel.
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patent: 3258571 (1966-06-01), Schmidt, Jr.
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patent: 3856998 (1974-12-01), Sims, Jr.
IMB Technical Disclosure Bulletin, R. G. Cross, "Keyboard Overlay," vol. 15, No. 1, p. 31, June, 1972.
IBM Technical Disclosure Bulletin, D. O. Johnson, Jr., "Keyboard With Changeable Encoding and Key Designation," vol. 13, No. 7, Dec. 1970, pp. 2041, 2042.
Olson Thomas H.
Scott James R.
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