Split back chair

Details Split back chair Split back chair

1991-11-12

1993-10-05

Cranmer, Laurie K.

Chairs and seats

Back movement resiliently opposed in operating position

Back adjusts independent of seat

2972844, A47C 300

Patent

active

052498395

ABSTRACT:
A chair, with independent control of a lumbar portion of a seat back and a thoracic portion of the seat back, has a seat connected with a base and a control connected with the base, generally under the seat. A first support, pivotally connected with the control, extends from the control to the thoracic portion of the seat back. A second support, pivotally connected with the control, extends from the control, to the lumbar portion of the seat back. The two supports operate independently and the thoracic and lumbar portions of the seat back rotate independently rearward with respect to the seat, providing sympathetic back support for a user. The thoracic portion may rotate laterally to follow twisting movements of a user's thoracic region. The lumbar portion may be connected with the second support to limit lateral rotation of the lumbar portion.

REFERENCES:
patent: 4756575 (1988-07-01), Dicks
patent: 4981325 (1991-01-01), Zacharkon
patent: 4981326 (1991-01-01), Heidmann
patent: 5042876 (1991-08-01), Faiks

Affiliated with

Also associated with

Rating

Split back chair does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-998506