Seat suspension device

Details Seat suspension device Seat suspension device

1988-04-14

1990-01-02

Machado, Reinaldo P.

Supports

Resilient support

Including load sustaining bearing or guide

248608, 248575, 297301, 297307, 267154, F16M 1300

Patent

active

048908100

ABSTRACT:
A seat suspension device which comprises an upper frame, a lower frame, a pair of linkage mechanisms provided between the upper and lower frames, and a torsion bar which elastically supports the seat upon the suspension device. The torsion bar is so arranged that it extends along the lateral bar section of one of the upper and lower frames, with its support end portion being secured at the other of the upper and lower frames, so as to resiliently support the upper frame. Further, the linkage mechanisms have downwardly arced upper portions in each of their links. Thus, these structures permit the lowering of the upper frame or the seat down to a lowest possible degree without interference of the parts of the linkage mechanisms and torsion bar.

REFERENCES:
patent: 3140851 (1964-07-01), Bilancia
patent: 3813073 (1974-05-01), Mohr et al.
patent: 3823932 (1974-07-01), Simons
patent: 4067610 (1978-01-01), Doerr et al.
patent: 4394046 (1983-07-01), Irwin et al.
patent: 4640488 (1987-02-01), Sakamoto
patent: 4729539 (1988-03-01), Nagata

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