Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1975-01-10
1976-05-25
Scott, James R.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
200159B, 200275, H01H 1370, H01H 106
Patent
active
039596117
ABSTRACT:
A keyboard system has a plurality of spaced sets of conductive members, each set including two outer U-shaped support members and a central U-shaped contact member disposed between the support members. The central member is coined to reduce the thickness of its outer portions and to dispose a central part upstanding at the center of the member. These members are arranged at a surface of an insulating support in electrical communication with conductive paths on an opposite surface of the support. A plurality of actuatable conductive elements, one for each set of conductive members, are provided to establish bridging electrical connections between the support members of the sets and the upstanding parts of the central contact members of the sets upon application of preselected deflecting forces to the conductive elements.
REFERENCES:
patent: 2522895 (1950-09-01), Raymond
patent: 2966570 (1960-12-01), Jordan
patent: 3783205 (1974-01-01), Boulanger
patent: 3808384 (1974-04-01), Boulanger
patent: 3849611 (1974-11-01), Walker, Jr.
patent: 3886341 (1975-05-01), Forrest
Balser Charles W.
Greene Herbert R.
Baumann Russell E.
Haug John A.
McAndrews James P.
Scott James R.
Texas Instruments Incorporated
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