Structure of computer keyboard (II)

Details Structure of computer keyboard (II) Structure of computer keyboard (II)

1994-01-24

1994-11-01

Weldon, Ulysses

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

400 82, 400489, D14115, G09G 302

Patent

active

053610822

ABSTRACT:
A computer keyboard includes two symmetrical parts, each consisted of a bottom shell supported on a common base plate above a common bottom plate, and a top shell supported on the respective bottom shell, wherein the bottom shell has inverted T-rods made to slide in respective arched slots on the base plate, a locating block made to slide in a guide groove on the base plate; the base plate has a spring stop strip terminated to a projecting potion engaged into a serrated side wall of the locating block of the bottom shell; a lifting mechanism is connected between the top and bottom shells and controlled to turn the top shell on mounting lugs on the bottom shell permitting the top shell to be moved from a horizontal position to a sloping position or from the sloping position to the horizontal position.

REFERENCES:
patent: 3990565 (1976-11-01), Felton et al.
patent: 4483634 (1984-11-01), Frey et al.
patent: 4509873 (1985-04-01), Ryan
patent: 4661005 (1987-04-01), Lahr
patent: 5067834 (1991-11-01), Szmanda et al.
patent: 5073050 (1991-12-01), Andrews
patent: 5122786 (1992-06-01), Rader
patent: 5137384 (1992-08-01), Spencer et al.
patent: 5160919 (1992-11-01), Mohler et al.
patent: 5178477 (1993-01-01), Gambaro
patent: 5267127 (1993-11-01), Pollitt
"Weird Keyboards: Rx for Hands?" PC World, May 1993.
"Typing Without Keys" Newsweek, Dec. 7, 1992, p.63.

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