Pushbutton keyboard assembly

Details Pushbutton keyboard assembly Pushbutton keyboard assembly

1986-06-12

1988-03-29

Brigance, Gerald L.

Communications: electrical

Audible indication

Percussion-type sound producer

379368, 379369, 379451, H04L 100

Patent

active

047346795

ABSTRACT:
A pushbutton keyboard assembly has a plurality of pushbuttons mounted over a circuit board. A circuit pattern on the circuit board has a plurality of switch positions and a pushbutton is aligned with each switch position. A cap fits over each pushbutton, each cap having a clear top for viewing of an indicia printed on the top of the pushbutton. Each cap has a laterally extending flange by which it is held in position by a dial cover extending over the circuit board and having apertures for the pushbuttons and caps. By the provision of caps, the indicia can be printed using material having suitable characteristics matching the pushbutton material, without the need of also withstanding wear during use.

REFERENCES:
patent: 3725907 (1973-04-01), Boulanger
patent: 4243846 (1981-01-01), Lenaerts et al.
patent: 4355211 (1982-10-01), Steiner
patent: 4436965 (1984-03-01), Morse
patent: 4501938 (1985-02-01), Kawauchi
patent: 4508942 (1985-04-01), Inaba
patent: 4551919 (1985-11-01), Dreher
patent: 4555600 (1985-11-01), Morse
patent: 4568918 (1986-02-01), Edel
patent: 4570039 (1986-02-01), Osawa et al.
C. C. Kling-"Plastic Keyboard Translator"-IBM Technical Disclosure Bulletin-vol. 4, No. 12, May 1962-pp. 3-4.

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