Adjustable headrest for treatment chair

Details Adjustable headrest for treatment chair Adjustable headrest for treatment chair

1981-02-13

1983-01-04

Zugel, Francis K.

Chairs and seats

Headrest

Angularly movable about horizontal axis

297410, A47C 738

Patent

active

043669859

ABSTRACT:
An adjustable headrest particularly adapted for a dental, medical or the like treatment chair wherein it is necessary to have a patient's head in various positions. A supporting arm preferably of the four-bar linkage type having a first end for being pivotally mounted on any suitable support for attachment to a treatment chair and a second end being pivotally mounted on a headrest for movement of the headrest which approximates the normal motion of the patient's head. Locking mechanism is attached to the headrest and supporting arm to lock the headrest in any desired position with the use of one hand of the operator.

REFERENCES:
patent: 535783 (1895-03-01), Archer
patent: 945194 (1910-01-01), Ritter
patent: 1531170 (1925-03-01), Berninghaus
patent: 1576915 (1926-03-01), Koenigkramer
patent: 2434007 (1948-01-01), O'Dea
patent: 2586417 (1952-02-01), Cole
patent: 2666476 (1954-01-01), Lycan
patent: 3692356 (1972-09-01), Mertens

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