Supports – Brackets – Shelf or scaffold type
Patent
1989-03-29
1990-07-03
Chin-Shue, Alvin C.
Supports
Brackets
Shelf or scaffold type
108143, A47G 2902
Patent
active
049384414
ABSTRACT:
An adjustable keyboard support is disclosed constituted by a rear housing that pivotally supports one end of a parallel link mechanism. A front housing is carried by the other end of the parallel link mechanism, and pivotally supports a keyboard mounting plate. The parallel link mechanism permits upward and downward movement of the keyboard mounting plate without change in the tilt of that plate. A gas cylinder mechanism coupled to the front housing changes the vertical position of the same, and a slide plate adjustment mechanism provides forward and backward movement of the keyboard mounting plate.
REFERENCES:
patent: 735716 (1903-08-01), Dahlquist
patent: 2010633 (1935-08-01), Heath
patent: 2673592 (1954-03-01), Caramelli
patent: 3202298 (1965-08-01), Koreska
patent: 3542326 (1970-11-01), Reapsummer
patent: 4130070 (1978-12-01), Herrin
Armstrong Eric J.
Campbell Philip J.
Eldon James B.
Hannah Bruce R.
Smith Harold A.
Chin-Shue Alvin C.
Knoll International Inc.
Lechok Sarah A.
O'Rourke Thomas A.
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