Keyboard device having plurality of keyswitches

Details Keyboard device having plurality of keyswitches Keyboard device having plurality of keyswitches

1997-07-01

2000-11-28

Hilten, John S.

Typewriting machines

Key-board or key lever-actuating mechanism

Key-cap or key-stem structure

400490, 200344, 200345, H01H 312, H01H 1370, B41J 514

Patent

active

061526274

ABSTRACT:
A keyboard device includes a plurality of keyswitches each having a keytop movable up and down, wherein the angle of the keytop varies depending on whether the keytop is in an initial position or in a pressed position. In this structure, the keytop moves in a direction corresponding to the motion of an operator's finger and thus smooth operations can be achieved, as opposed to a conventional keyboard device in which a keytop moves vertically while maintaining itself horizontal and thus the motion of the keytop occurs in a direction different from the motion of an operator's finger.

REFERENCES:
patent: 962600 (1910-06-01), Strother
patent: 5278372 (1994-01-01), Takagi et al.
patent: 5280147 (1994-01-01), Mochizuki et al.
patent: 5512719 (1996-04-01), Okada et al.
patent: 5746308 (1998-05-01), Lin
patent: 5894117 (1999-04-01), Kamishima
patent: 6072134 (2000-06-01), Sato et al.

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