Chair with adjustable back support cushion

Claim 2

In a back assembly for a chair, the combination comprising: (a) a back portion; (b) a transversal lumbar support cushion; (c) means for adjustably mounting said transversal lumbar support cushion on said back portion for selective adjustment up and down longitudinally of the back portion and toward and away from said back portion; and, (d) a centrally disposed, longitudinal spine support cushion fixedly mounted on said back portion in a position above the transversal lumbar support cushion and extending to the top end of the back portion.

Claim 3

A back assembly for a chair as defined in claim 1, wherein: (a) said means for adjustably mounting said transversal lumbar support cushion on said back portion includes, a support member for adjustably mounting said transversal lumbar support cushion on said back portion, and means for releasably holding said support member in a longitudinally adjusted position on the back portion.

Claim 4

A back assembly for a chair as defined in claim 2, wherein: (a) said means for adjustably mounting said transversal lumbar support cushion on said back portion includes means for adjustably mounting said transversal lumbar support cushion on said support member for adjusting the transversal lumbar support cushion toward or away from said back portion.

Claim 5

A back assembly for a chair as defined in claim 3, wherein: (a) said back portion is provided with an opening extending therethrough, from the back to the front thereof; (b) said support member is adjustably mounted in said opening in said back portion; and, (c) said means for adjustably mounting said transversal support cushion on said back portion includes a rack means carried by said back portion adjacent said opening through the back portion, and a holding means mounted on said support member and adapted to be detachably engaged with said rack means for holding the support member in a longitudinally adjusted position on said back portion.

Claim 6

A back assembly for a chair as defined in claim 4, wherein: (a) said means for adjustably mounting said transversal support cushion on said back portion includes a spring means for releasably holding said support member holding means in holding engagement with said rack means mounted on said back portion.

Claim 7

A back assembly for a chair as defined in claim 5, wherein: said spring means is operatively mounted on the back side of the back portion.

Claim 8

A back assembly for a chair as defined in claim 5, wherein: (a) said spring means is operatively mounted on the front side of said back portion.

Claim 9

A back assembly for a chair as defined in claim 5, wherein: (a) said support member comprises an elongated tubular shaft, and said means for adjustably mounting the transversal lumbar support cushion on the support member includes an elongated shaft which is movably mounted through said tubular shaft for adjusting the position of the transversal lumbar support cushion toward or away from said back portion.

Claim 10

A back assembly for a chair as defined in claim 8, wherein: (a) said holding means includes a flange means carried on said tubular shaft, said rack means is provided with a plurality of holes, and said holding means is provided with a plurality of prongs which are adapted to be releasably mounted in said holes in said rack means.