Lumbar support regulating apparatus

Details Lumbar support regulating apparatus Lumbar support regulating apparatus

1988-10-20

1990-01-30

Brown, Peter R.

Chairs and seats

Bottom or back with means to alter contour

A47C 746

Patent

active

048969184

ABSTRACT:
A lumbar support regulating apparatus for a vehicle seat includes a pressing plate rotatably mounted on an offset portion of a rod, the opposite ends of which are rotatably mounted in opposite sides of a seat back frame so that upon rotation of the rod the pressing plate will be moved forwardly and rearwardly. A spiral spring is connected at its inner end to the rod with the outer end being connected to a link which is pivoted on the rod. The free end of the link is connected to a travelling nut which is threadedly mounted on a motor driven screw having suitable limit stops thereon so that upon rotation of the screw the travelling nut will pivot the link to rotate the rod through the spiral spring.

REFERENCES:
patent: 3890000 (1975-06-01), Easley
patent: 4019777 (1977-04-01), Hayashi
patent: 4162807 (1979-07-01), Yoshimura
patent: 4313637 (1982-02-01), Barley
patent: 4465317 (1984-08-01), Schwarz
patent: 4564235 (1986-01-01), Hatsutta et al.

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