Electricity: circuit makers and breakers – Multiple circuit control – Combined pivoted and reciprocating contact
Patent
1997-03-10
2000-08-15
Friedhofer, Michael A.
Electricity: circuit makers and breakers
Multiple circuit control
Combined pivoted and reciprocating contact
200 5A, H01H 1370
Patent
active
061039799
ABSTRACT:
A keyboard includes a plurality of keys, wherein each key has an elongated shape elongated in a first direction and selectively establishes two different electrical contacts as a result of being pressed appropriately. The plurality of keys are aligned along a second direction different from the first direction. A length in the first direction of each key is longer than a width in the second direction of the key and shorter than twice the width and carries two different key letters present on a front surface thereof at respective ends of the key. Each key establishes one electric contact if a first end of the key is pressed and establishes another electric contact if a second end of the key is pressed. The front surface of each key is parallelogram-shaped and the plurality of keys are arranged so that the key letters present on the keys are arranged in a standard arrangement. The plurality of keys are arranged so that one side of two long parallel sides of a first key face one side of two long parallel sides of a second key, a first side of two short parallel sides of the first key is aligned with a first side of two short parallel sides of the second key, and a second side of the two short parallel sides of the first key is aligned with a second side of the two short parallel sides of the second key.
REFERENCES:
patent: Re34304 (1993-07-01), Goldwasser et al.
patent: 4340791 (1982-07-01), Sorenson
patent: 4341934 (1982-07-01), Muller
patent: 4529848 (1985-07-01), Cherry
patent: 4529849 (1985-07-01), Kamei et al.
patent: 4716262 (1987-12-01), Morse
patent: 4740661 (1988-04-01), Nishikawa et al.
patent: 4786766 (1988-11-01), Kobayashi
patent: 4803316 (1989-02-01), Hayashi et al.
patent: 4896003 (1990-01-01), Hsieh
patent: 4924047 (1990-05-01), Tsuge
patent: 4929804 (1990-05-01), Kawai et al.
patent: 4978823 (1990-12-01), Sato et al.
patent: 5265716 (1993-11-01), Sawada et al.
patent: 5283408 (1994-02-01), Chen
patent: 5288158 (1994-02-01), Matias
patent: 5293018 (1994-03-01), Lander
patent: 5329278 (1994-07-01), Dombroski
patent: 5338909 (1994-08-01), Stanley et al.
patent: 5357071 (1994-10-01), Hanaki
patent: 5378862 (1995-01-01), Tasaka et al.
patent: 5430262 (1995-07-01), Matsui et al.
Iwasa Seiichi
Motoyama Hideyuki
Watanabe Goro
Friedhofer Michael A.
Fujitsu Limited
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