Scissor jack lumbar support

Chairs and seats – Bottom or back with means to alter contour – Providing support for lower back region

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A47C 746

Patent

active

055539190

ABSTRACT:
A lumbar support for a seat back having a support platform that extends and retracts by operation of lever arms. The present invention generally includes a support frame and a rigid support platform suspended within a seat back. The support platform is mounted to the support frame by lever arms preferably arranged in a scissors jack configuration. A control mechanism having a Bowden cable and a rotary control is provided to selectively pivot the levers and cause the support platform to extend and retract with respect to the support frame.

REFERENCES:
patent: 1182854 (1916-05-01), Poler
patent: 3195955 (1965-07-01), Richardson et al.
patent: 3724797 (1973-04-01), Freitag et al.
patent: 3797886 (1974-03-01), Griffiths
patent: 4050738 (1977-09-01), Griffiths
patent: 4121802 (1978-10-01), Kluting et al.
patent: 4171125 (1979-10-01), Griffiths
patent: 4172589 (1979-10-01), Griffiths
patent: 4231615 (1980-11-01), Griffiths
patent: 4313637 (1982-02-01), Barley
patent: 4316631 (1982-02-01), Lenz et al.
patent: 4339150 (1982-07-01), McNamara et al.
patent: 4354709 (1982-10-01), Schustee
patent: 4368917 (1983-01-01), Urai
patent: 4452485 (1984-06-01), Schuster
patent: 4506814 (1985-03-01), Adorui
patent: 4627661 (1986-12-01), Ronnhult et al.
patent: 4762367 (1988-08-01), Denton
patent: 4995580 (1991-02-01), Fujii
patent: 5020855 (1991-06-01), Lundberg et al.
patent: 5088790 (1992-02-01), Wainwright et al.
patent: 5197780 (1993-03-01), Coughlin
patent: 5224757 (1993-07-01), Geitz et al.
patent: 5240308 (1993-08-01), Goldstein et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Scissor jack lumbar support does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Scissor jack lumbar support, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scissor jack lumbar support will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1315395

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.