Keyboard apparatus

Details Keyboard apparatus Keyboard apparatus

2007-10-30

2007-10-30

Friedhofer, Michael A (Department: 2832)

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

C200S517000, C200S344000, C361S689000

Reexamination Certificate

active

11546312

ABSTRACT:
A keyboard apparatus has a base component arranged under key switches. The base component has an embossed portion. A cooling material is filled into the embossed portion. The embossed portion may be formed continuously between the key switches along the length of key rows over substantially the entire length from the left end to the right end of the rows. On the base component, a membrane sheet having contact point portions corresponding to the key switches may be arranged. The membrane sheet may have a heat dissipation hole at a part opposing the embossed portion.

REFERENCES:
patent: 5313362 (1994-05-01), Hatada et al.
patent: 5757615 (1998-05-01), Donahoe et al.
patent: 6130388 (2000-10-01), Nishijima
patent: 6674642 (2004-01-01), Chu et al.
patent: 6795312 (2004-09-01), Narakino et al.
patent: 6909602 (2005-06-01), Dietrich et al.
patent: 6935412 (2005-08-01), Mueller
patent: 6992382 (2006-01-01), Chrysler et al.
patent: 11316647 (1999-11-01), None

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