Seat adjusting device for adjusting inclining angle of seat back

Details Seat adjusting device for adjusting inclining angle of seat back Seat adjusting device for adjusting inclining angle of seat back

1997-06-20

1998-09-22

Nelson, Jr., Milton

Chairs and seats

Movable back

Tiltable

297362, B60N 202

Patent

active

058104429

ABSTRACT:
A seat adjusting device for adjusting an incline angle of a seat back relative to a seat cushion. A lower arm engages with a seat cushion and an upper arm engages a seat back. The lower arm has a hinge opening, and the upper arm has an opening eccentric to the hinge opening. A hinge shaft is rotatably inserted through the hinge opening and the eccentric opening and includes a convex portion engageable with the eccentric opening. An inner gear is disposed on one of the lower arm and upper arm, and an outer gear meshes with the inner gear. The outer gear has fewer teeth than the inner gear and is disposed on the other of the lower arm and upper arm. A wedge shaped member is disposed between the eccentric opening and the hinge shaft and is biased by an elastic member.

REFERENCES:
patent: 4227741 (1980-10-01), Gross et al.
patent: 4538855 (1985-09-01), Peetz et al.
patent: 4668013 (1987-05-01), Wahlmann
patent: 5123703 (1992-06-01), Morris et al.
patent: 5154475 (1992-10-01), Kafitz
patent: 5312158 (1994-05-01), Wittig et al.

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