Backrest with adjustable lumber support

Claim 1

A backrest having an adjustable lumbar support comprising, a resilient upstanding member having upper and lower ends, a front portion, a back portion, and opposite side edges, said resilient member having a plurality of vertically spaced, horizontally disposed grooves formed in its front portion above the lower end thereof, said grooves extending completely across the lateral dimension of said resilient member, a resilient lumbar support cushion having a back portion, a curved front portion, an upper end, a lower end, and opposite side edges, said lumbar support cushion having at least one horizontally disposed tongue means extending rearwardly from its back portion adapted to be selectively removably received in one of said grooves whereby the vertical position of said support cushion, with respect to said resilient member, may be selectively adjusted, said resilient member front portion including a flap portion depending from above said grooves and having dimension so as to completely cover said grooves and said lumbar support cushion in said grooves and to extend downwardly beyond said cushion, whereby a smooth, front surface is provided on said resilient member.