Dental patient chair

Details Dental patient chair Dental patient chair

1989-12-14

1991-05-14

Cranmer, Laurie K.

Chairs and seats

Movable bottom

Interconnected with back for relative concurrent movement

297330, A47C 102

Patent

active

050150359

ABSTRACT:
A dental patient chair comprises an arrangement for adjusting the seat height, the inclination position of the seat and the backrest, as well as the position of the seat and backrest with reference to a longitudinal direction of the chair. The arrangement includes two pivotably connected arms having one arm pivotably connected to a pedestal and the other connected to the seat and being provided with a drive arrangement for shifting the arms relative to their pivotable connection to move the seat in both a vertical and horizontal direction, as well as to tilt the seat relative to a base plane. The arrangement includes a control device for operating the drive arrangement for pivoting the arms relative to the pivotable connections between themselves and to the pedestal and seat.

REFERENCES:
patent: 3083055 (1963-03-01), Davis
patent: 3302971 (1967-02-01), Lory
patent: 3338632 (1967-08-01), Kleinsorge
patent: 4173372 (1979-11-01), Harris
patent: 4312500 (1982-01-01), Janssen
patent: 4344594 (1982-08-01), Hirth
patent: 4533106 (1985-08-01), Stockl
patent: 4722566 (1988-02-01), Castellini

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