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US 9,538,849 B2Granted
Chair back with lumbar and pelvic supports
AssigneeHaworth, Inc.
InventorsPete J. Beyer, Joe Willette, Larry A. Wilkerson, Teresa Bellingar
Life of this patent
Estimating the term…
Abstract
An office chair is provided having a back assembly which is configured to provide supplemental support to the back of a chair occupant in addition to the support provided by the primary support surface of the chair back. The chair back includes a lumbar support unit having a lumbar support pad that includes a plurality of support rings disposed one inside of the other.
Claims19
A back support pad for a chair comprising:
- a plurality of elastomeric support rings disposed one inside of the other, said support rings each having peripheral edges, said support rings spaced from each other such that said support rings are separated from each other along a majority of their peripheral edges;
- and
- spaced apart connector webs extending between adjacent support rings to join each said support ring to an adjacent said support ring, each of said support rings and connected to said adjacent support ring by a plurality of said connector webs which are spaced apart from each other at selected locations, with each next outwardly successive one of said support rings being connected to an inwardly successive one of said support rings by said connector webs extending therebetween.
A back support pad for a chair comprising:
- a plurality of elastomeric support rings spaced away from each other to define a support surface of the back support pad for supporting the body of a chair occupant, the support rings being disposed one inside of the other and having adjacent peripheral edges which are spaced from each other such that the support rings are separated from each other along a majority of the peripheral length thereof;
- and
- at least one support arm extending from the back support pad for attaching the back support pad to a frame;
- said back support pad including a plurality of spaced apart connector webs extending crosswise between adjacent support rings to join each support ring to an adjacent support ring, each adjacent pair of the support rings having a plurality of the connector webs which are spaced apart from each other at selected locations along the length of the support rings such that an inner one of the support rings supports a next successive one of the support rings by the connector webs connected therebetween with each next outwardly successive one of the support rings being connected to an inwardly successive one of the support rings by the connector webs extending therebetween.
1 more element
A back support pad for a chair comprising:
- a plurality of concentric support rings, each of the plurality of support rings being spaced apart from an adjacent support ring along a substantial portion thereof;
- a central mounting section spaced inward of the plurality of concentric support rings;
- and
- a plurality of connector webs extending between adjacent support rings to join each support ring to an adjacent support ring, wherein the plurality of support rings, the plurality of connector webs and the central mounting section from an integrally molded lumbar support that curves forwardly about a vertical centerline.
1 more element
Dependencies are inferred from the claim text.