Headrest for a dental chair

Details Headrest for a dental chair Headrest for a dental chair

1980-07-17

1982-06-22

McCall, James T.

Chairs and seats

Headrest

Angularly movable about horizontal axis

297391, 297409, 297410, A61G 1500, A47C 110

Patent

active

043359205

ABSTRACT:
An adjustable headrest for a dental chair having one lock for holding the headrest at an articulated position and a second lock for holding the headrest at an adjusted longitudinal position with respect to the backrest of the chair. The invention is a one hand operated lock release for operating both locks. The release can be constructed so that manipulation of a single member can accomplish sequential, independent or simultaneous operation of both locks.

REFERENCES:
patent: 520577 (1894-05-01), Schwaab, Jr.
patent: 1505474 (1924-08-01), Laraia
patent: 2466553 (1949-04-01), McDonald, Jr.
patent: 2740467 (1956-04-01), Page
patent: 2740467 (1956-04-01), Page
patent: 3477761 (1969-11-01), Krantz
patent: 3603642 (1971-09-01), Laessker
patent: 3936091 (1976-02-01), Rabinowitz
patent: 4159093 (1979-01-01), Hamilton
patent: 4256341 (1981-03-01), Goldner et al.

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