Lumbar support
First Claim
1. A lumbar support assembly for a seat having a seat frame and a back rest with a seat cushion comprising:
- a mounting member (18) for mounting to a seat frame (14),pneumatic adjustment means (20) supported on said mounting member (18) for moving between inflated and deflated states, andcontrol means (22) for controlling movement of said pneumatic adjustment means (20) between said inflated and said deflated states,characterized by including back support means (24) for biasing said pneumatic adjustment means (20) toward said inflated state and for moving inwardly toward said deflated state in response to a passenger to an infinitely adjustable contour, said back support means (24) being independently supported on said mounting member (18) and extending over said pneumatic adjustment means (20).
1 Assignment
0 Petitions
Accused Products
Abstract
A lumbar support assembly for a seat having a seat frame and a backrest. The assembly (10) includes a rigid mounting member (18) within the seat frame (14) supported by a plurality of springs (28) or alternatively by integral clips (58). A pneumatic bladder (32) is supported on the mounting member (18) by a plurality of fasteners (61). A contoured plate (42) is disposed adjacent the mounting member (18) and the bladder (32) is supported between the contoured plate (42) and the mounting member (18), as the bowed contoured plate (42) urges the bladder (32) toward the inflated position. A plurality of guides (30) are disposed upon the mounting member (18) and are adapted to slideably receive a plurality of fingers (56) integrally disposed on the contoured plate (42). A pneumatic tube (34) extends from the bladder (32) to a normally closed pneumatic control valve (36) which is attached to any remote location. Upon opening of the valve (36) the inflated bladder (32) adjusts toward a deflated state as air is released in response to force being applied to the backrest (16) allowing for incremental adjustments in contour.
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Citations
20 Claims
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1. A lumbar support assembly for a seat having a seat frame and a back rest with a seat cushion comprising:
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a mounting member (18) for mounting to a seat frame (14), pneumatic adjustment means (20) supported on said mounting member (18) for moving between inflated and deflated states, and control means (22) for controlling movement of said pneumatic adjustment means (20) between said inflated and said deflated states, characterized by including back support means (24) for biasing said pneumatic adjustment means (20) toward said inflated state and for moving inwardly toward said deflated state in response to a passenger to an infinitely adjustable contour, said back support means (24) being independently supported on said mounting member (18) and extending over said pneumatic adjustment means (20). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification