Headrest adjusting structure for a seat

Details Headrest adjusting structure for a seat Headrest adjusting structure for a seat

2008-02-20

2009-06-23

White, Rodney B (Department: 3636)

Chairs and seats

Headrest

Angularly movable about horizontal axis

Reexamination Certificate

active

07549704

ABSTRACT:
A headrest adjusting structure for a seat comprises a base and a rotating support. The base is formed with a groove for receiving a supporting portion of the rotating support which has outwardly cavities. The base has outwardly accommodating spaces which is formed with an aperture for receiving a ball and resilient element on two sides. Each ball has an end engageable with the corresponding recess on the positioning disk mounted in the rotating support. A threaded fastener can penetrate the pressing plates fitted in the accommodating spaces of the base, the base and the supporting portion of the rotating support, and be screwed into a nut to hold together. A cap is mounted on each accommodating space of the base. A headrest which is combined at the headrest adjusting assembly installed on a seat can be adjusted to a preferred position by manually pulling the rotating support easily.

REFERENCES:
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patent: 3692356 (1972-09-01), Mertens
patent: 3761128 (1973-09-01), Schenk et al.
patent: 4335920 (1982-06-01), Hirth
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patent: 6702385 (2004-03-01), Holdampf et al.
patent: 6857704 (2005-02-01), Stenzel et al.
patent: 6899395 (2005-05-01), Yetukuri et al.
patent: 7055909 (2006-06-01), Wu
patent: 7093313 (2006-08-01), DeBraal et al.

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