Moveable headrest

Details Moveable headrest Moveable headrest

1996-02-21

1997-07-01

Cuomo, Peter M.

Chairs and seats

Headrest

Angularly movable about horizontal axis

297391, A47C 736, A47C 110

Patent

active

056429185

ABSTRACT:
A moveable headrest is equipped with a lower headrest frame shaft fixedly connected to a headrest stay detachably connected to the upper end of the seat back, and a pair of ratchet bases rotatably supported on respective shaft ends of the lower frame shaft. The ratchet bases are coupled with each other at their upper ends through a moveable upper headrest frame. A ratchet-and-pawl mechanism is attached to at least one of the base members for selectively engaging the upper frame with the lower frame shaft and for producing a forward-and-backward angular adjustment of the headrest. The shaft end of the lower frame shaft is formed with an annular stepped portion extending continuously in a peripheral direction of the lower frame shaft nearby the top end, so that the annular stepped portion abuts the inside wall surface of the ratchet base. A pawl bracket is fixedly connected to the shaft end of the lower frame shaft by all-around welding, while sandwiching the ratchet base between the stepped portion and the pawl bracket.

REFERENCES:
patent: 2828810 (1958-04-01), Barecki et al.
patent: 4674792 (1987-06-01), Tamura et al.
patent: 4674797 (1987-06-01), Tateyama
patent: 4678232 (1987-07-01), Ishida et al.
patent: 4830434 (1989-05-01), Ishida et al.
patent: 5150632 (1992-09-01), Hein
U.K. Search Report, GB 9603578.7, Apr. 30, 1996.

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