Headrest control device for a treatment chair

Details Headrest control device for a treatment chair Headrest control device for a treatment chair

1980-12-11

1982-10-12

Zugel, Francis K.

Chairs and seats

Headrest

Angularly movable about horizontal axis

297 61, A47C 738

Patent

active

043535950

ABSTRACT:
A headrest control device for a treatment chair in which the headrest contains a linkage capable of raising and lowering a head supporting portion of the headrest in synchronized interlocking relationship with the tilting of the headrest. The device facilitates the bringing of the head supporting portion into firm contact with the rear neck region of the patient thereby making it possible for him to open his mouth in a natural posture when he undergoes oral treatment with the backrest of the treatment chair being held approximately horizontal and the headrest being slightly forwardly tilted.

REFERENCES:
patent: 93662 (1869-08-01), Archer
patent: 337521 (1886-03-01), Scarritt
patent: 2869619 (1959-01-01), Petersen et al.
patent: 3712666 (1973-01-01), Stoll
patent: 3817576 (1974-06-01), Ciavaffoni et al.
patent: 3929374 (1975-12-01), Hogan et al.
patent: 4266760 (1981-05-01), Matsui et al.

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