Seat adjuster with interlocking tracks

Details Seat adjuster with interlocking tracks Seat adjuster with interlocking tracks

1991-04-26

1991-12-31

Chotkowski, Karen J.

Supports

Stand

Horizontally movable support surface

248420, 384 34, B60N 100

Patent

active

050765302

ABSTRACT:
A track assembly of a vehicle seat adjuster includes an upper track secured to the seat and adjustable back and forth along a lower track which is anchored to the vehicle floor pan. Friction between the tracks is reduced by load-bearing rollers located between the tracks at the center thereof and by spherical balls located between the tracks along the sides thereof. The rollers travel independently of the balls to prevent possible binding of the rollers, the balls along each side of the track being held in fixed longitudinally spaced relation by a strip-like retainer. The balls are positioned at the lower corners of the upper track and, if the vehicle is involved in a severe frontal crash, the balls cause portions of the upper track to be forcibly pinched between portions of the lower track so as to effect interlocking of the tracks and thereby reduce the danger of the upper track moving forwardly relative to and separating vertically from the lower track under the influence of seat belt loads imposed on the upper track.

REFERENCES:
patent: 2336433 (1943-12-01), Woina
patent: 3491979 (1970-01-01), Wonell
patent: 4742983 (1988-05-01), Nihei
patent: 4760988 (1988-08-01), Bianchi et al.
patent: 4852846 (1989-08-01), Weier

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