Coded data generation or conversion – Bodily actuated code generator – Including keyboard or keypad
Patent
1996-11-05
1999-10-19
Horabik, Michael
Coded data generation or conversion
Bodily actuated code generator
Including keyboard or keypad
400472, 345168, H03K 1794
Patent
active
059696443
ABSTRACT:
A keyboard has an upper case, a lower case, and a stacked functional structure formed by stacking and fastening together a membrane switch sheet, a rubber sheet and a housing supporting keys in that order on a curved plate and a flat plate. When assembling the stacked functional structure, the membrane switch sheet and the rubber sheet are placed in that order on the curved plate and the flat plate supported in place on the bottom wall of the lower case and support ribs formed on the inner surface of the bottom wall of the lower case, connecting hooks formed integrally with the housing are inserted through aligned slots formed in the rubber sheet, the membrane switch sheet, the curved plate and the flat plate so that the connecting hooks engage with the lower surfaces of the curved plate and the flat plate with the membrane switch sheet and the rubber sheet are sandwiched firmly between the housing, and the curved plate and the flat plate. The stacked functional structure is sandwiched between the upper and the lower case, and then the upper and the lower case are fastened together to complete the keyboard.
REFERENCES:
patent: Re32977 (1989-07-01), Gotoh et al.
patent: 4560845 (1985-12-01), Takamura et al.
patent: 4605828 (1986-08-01), Gostomski, Jr. et al.
patent: 4701579 (1987-10-01), Kurachi et al.
patent: 4760217 (1988-07-01), Suzuki et al.
patent: 4876415 (1989-10-01), Clancy
patent: 5490037 (1996-02-01), Clancy
patent: 5535091 (1996-07-01), Lee
patent: 5608603 (1997-03-01), Su
Alps Electric Co. ,Ltd.
Edwards, Jr. Timothy
Horabik Michael
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