Head restraint adjustment mechanism

Details Head restraint adjustment mechanism Head restraint adjustment mechanism

1990-06-18

1991-10-15

Dorner, Kenneth J.

Chairs and seats

Headrest

Adjustable rectilinearly vertically

A47C 738

Patent

active

050568671

ABSTRACT:
An adjustment mechanism for a head restraint assembly in which the head restraint is supported on one or more posts having a plurality of V-shaped detent notches for engagement by a spring clip to hold the head restraint in place. The spring clip includes a V-shaped contacting portion having two legs which concurrently contact the surfaces of the detent notches to hold the head restraint in place. The lowest notch is a locking notch having an upper inclined surface and a lower radial surface while the lower surface of the spring clip contacting portion includes a cutout the upper edge of which contacts the radial surface of the locking notch to prevent removal of the head restraint post. The outer edge of the V-shaped contacting portion of the spring clip is rounded to reduce abrasion of the post surface coating.

REFERENCES:
patent: 3304035 (1967-02-01), Davis
patent: 3512833 (1970-05-01), Sugiura
patent: 3542429 (1970-11-01), Inoue
patent: 4545618 (1985-10-01), Kitamura
patent: 4854642 (1989-08-01), Vidwans et al.

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