Seat having adjustable lumbar support

Details Seat having adjustable lumbar support Seat having adjustable lumbar support

1989-07-25

1991-05-07

Chen, Jose V.

Chairs and seats

Bottom or back with means to alter contour

297460, A47C 740

Patent

active

050130870

ABSTRACT:
Disclosed is a seat for an automobile or the like. The seat includes a seat cushion; a seat back connected to the seat cushion, a space being formed within a lower portion of the seat back; a rod rotatably interposed between opposed side frames of the seat back; a hip support secured to an intermediate portion of the rod and disposed within the space provided in the seat back; a support board disposed upon a support plate provided within the hip support, in such a manner as to be vertically slidable; a drum provided upon an upper portion of the support plate; a guide pulley provided upon a lower portion of the support plate in such a manner as to be swingable; a cable trained between the drum and the guide pulley and driven by means of the rotation of the drum, the support board being connected to a substantially intermediate portion of the cable; a spring for biasing the guide pulley in the direction of increasing the tension of the cable; a first operation handle for rotating the drum by means of a flexible wire; and a second operation handle for rotating the rod by means of a brake mechanism.

REFERENCES:
patent: 3880463 (1975-04-01), Shephard et al.
patent: 4465317 (1984-08-01), Schwarz
patent: 4534592 (1985-08-01), Hattori
patent: 4623193 (1986-11-01), Lieker
patent: 4730871 (1988-03-01), Sheldon
patent: 4811986 (1989-03-01), Hattori et al.

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