Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1980-06-23
1982-02-02
Scott, James R.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
200159B, 200308, H01H 1370
Patent
active
043141161
ABSTRACT:
A keyboard has first and second nested planar members with depressions formed thereon. The upper member is transparent. The lower member may be color coded and carry replaceable key indicia in the depressions.
The laminated overlay nested planar members are disposed adjacent to a conventional elastomeric diaphragm switch assembly having an upper layer of shaped protrusions abutting the lower most inner surfaces of the second or lower member depressions. Frame structure of variable form assists in retaining the laminated overlay members in fixed relationship to the elastomeric diaphragm switch assembly.
REFERENCES:
patent: 3591749 (1971-07-01), Comstock
patent: 3860771 (1975-01-01), Lynn et al.
patent: 4046975 (1977-09-01), Seeger, Jr.
patent: 4059737 (1977-11-01), Gergaud
patent: 4060703 (1977-11-01), Everett, Jr.
patent: 4066850 (1978-01-01), Heys, Jr.
patent: 4127752 (1978-11-01), Lowthorp
patent: 4128744 (1978-12-01), Seeger
patent: 4237351 (1980-12-01), Boulanger et al.
G. G. Promis et al., IBM Tech. Disc. Bull., "Control Panel," vol. 19, No. 2, Jul. 1976, pp. 405, 406.
D. O. Johnson, Jr., IBM Tech. Disc. Bull., "Keyboard with Changeable Encoding and Key Designation," vol. 13, No. 7, Dec. 1970, pp. 2041, 2042.
Rogers Corporation
Scott James R.
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