Chairs and seats – Headrest
Patent
1986-06-06
1987-04-14
Aschenbrenner, Peter A.
Chairs and seats
Headrest
297409, 74 8915, A47C 736
Patent
active
046573046
ABSTRACT:
A reversibly extensible headrest for an automotive vehicle is disclosed including a three link triangular linkage arrangement having a transverse manual or motor operated shaft oppositely threaded along two portions, at least one pair of links each mounted to the headrest at a common pivot point and to a respective one of the oppositely threaded portions. A third link is mounted to the headrest spaced from the common pivot point and one of the threaded portions. The mounting of the links to the threaded shaft being by way of corresponding threaded nuts. In the extended position the one pair of links are maintained in longitudinal side-by-side abutment providing lateral stability to the headrest.
REFERENCES:
patent: 1580606 (1926-04-01), Jones
patent: 2434007 (1948-01-01), O'Dea
patent: 2460942 (1949-02-01), Marshall
patent: 4191422 (1980-03-01), Inasawa et al.
patent: 4250762 (1981-02-01), Weatherby
patent: 4278291 (1981-07-01), Asai
patent: 4339150 (1982-07-01), McNamara et al.
patent: 4469374 (1984-09-01), Kashihara et al.
patent: 4531779 (1985-07-01), Hashimoto
Baker James T.
Heesch Max O.
Aschenbrenner Peter A.
Breh Donald J.
Chen José V.
ITT Corporation
Raden James B.
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