Low cost keyboard with key tops defining surface of curved profi

Details Low cost keyboard with key tops defining surface of curved profi Low cost keyboard with key tops defining surface of curved profi

1988-03-31

1989-10-24

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200517, 200600, 4004791, 400488, H01H 900, H01H 1370

Patent

active

048764159

ABSTRACT:
A keyboard having a plurality of rows of depressable keys whose key tops define a surface of concave profile curved about an axis. The concave profile is achieved with key tops and key stems of identical configuration by maintaining a key holder plate which carries the key stems in a concave profile. The concave profile of the key holder plate is produced by forming the plate with graduated flexibility across its width and mounting it on a substantially rigid base so that a region of the plate located midway between its edges is drawn to a position outside the plane containing the edges of the plate by means of a plurality of fasteners between the base and a plate located along its length.

REFERENCES:
patent: 4359720 (1982-11-01), Chai et al.
patent: 4363942 (1982-12-01), Deeg et al.
patent: 4467150 (1984-08-01), Leitermann et al.
patent: 4528428 (1985-07-01), Gotoh et al.
patent: 4560844 (1985-12-01), Takamura et al.
patent: 4560845 (1985-12-01), Takamura et al.
patent: 4605828 (1986-08-01), Gostomski, Jr. et al.
patent: 4659879 (1987-04-01), Hasegawa
patent: 4735520 (1988-04-01), Suzuki et al.
patent: 4736076 (1988-04-01), Mochizuki et al.
patent: 4760217 (1988-07-01), Suzuki et al.

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