Keyboards

Details Keyboards Keyboards

2007-08-16

2008-09-23

Friedhofer, Michael A (Department: 2832)

Electricity: circuit makers and breakers

Solid contact

Membrane type

C200S517000, C200S341000

Reexamination Certificate

active

07427725

ABSTRACT:
A keyboard. A membrane circuit board includes a plurality of switches. At least one keycap is disposed on the membrane circuit board and includes a plurality of activating pillars respectively corresponding to and separated from the switches. When the keycap is moved toward the membrane circuit board, one of the activating pillars compresses one of the switches, outputting a signal corresponding to the keycap.

REFERENCES:
patent: 5508479 (1996-04-01), Schooley
patent: 5579002 (1996-11-01), Iggulden et al.
patent: 6140593 (2000-10-01), Bramesfeld et al.
patent: 6680676 (2004-01-01), Hayashi et al.
patent: 6841748 (2005-01-01), Serizawa et al.
patent: 6995326 (2006-02-01), Sugimura et al.
patent: 7034235 (2006-04-01), Hosaka
patent: 7075520 (2006-07-01), Williams
patent: 7094979 (2006-08-01), Kurokawa et al.
patent: 7131780 (2006-11-01), Hirsch
patent: 7259339 (2007-08-01), Babella et al.
patent: 7262379 (2007-08-01), Nishimura et al.

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