Headrest device for vehicle seat

Details Headrest device for vehicle seat Headrest device for vehicle seat

2007-12-18

2007-12-18

Brown, Peter R. (Department: 3636)

Chairs and seats

Headrest

Adjustable rectilinearly vertically

Reexamination Certificate

active

10993350

ABSTRACT:
A headrest device of a vertically movable type including a headrest body, a stay element and a lock mechanism provided on a seat back of a seat. The lock mechanism includes a lock plate movably disposed therein and a biasing means for normally biasing said lock plate in a locking direction. The stay element is slidably connected with the lock mechanism so as to be vertically movable and has a non-linearly profiled surface region defined in a surface portion thereof with which said lock plate is biased by said biasing means to frictional contact. Such formation of non-linearly profiled surface region is effective in preventing a friction noise from being generated between the lock plate and the stay element.

REFERENCES:
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patent: 6655742 (2003-12-01), Ozaki
patent: 6742846 (2004-06-01), Isaacson
patent: 7121626 (2006-10-01), Akehi et al.

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