Lower back support

The combination of an auxiliary backrest and an adjustable attachment for suspending the backrest from a chair having a fixed backrest and an upper edge on the fixed backrest;

• the auxiliary backrest normally being arranged to extend vertically and having a front, a back, a top and a bottom and the auxiliary backrest further comprising a resiliently deformable vertical spine having a central portion and a plurality of laterally extending ribs having forwardly and outwardly extending end portions to give lateral support, the spine further including a cable anchor at the top of the spine and a sheath anchor at the bottom of the spine, the spine being resiliently deformable from a generally flat configuration, and in which the actuator includes a controller, a sheath coupled at one end to the controller and extending to said sheath anchor, and a cable attached to the controller and extending through the sheath to the cable anchor so that operation of the controller changes the distance between the sheath and cable anchors to thereby vary the curvature of the spine and hence the curvature of the auxiliary backrest, and the adjustable attachment coupled to the back of the auxiliary backrest to permit hanging the auxiliary backrest from an upper edge of a fixed backrest;
• and
• the adjustable attachment including an elongate receiver attached to the back of the auxiliary backrest and defining with this backrest a vertically extending passage, the receiver further including a plurality of openings placed along the receiver and providing access into the passage and a hanger having an inner part adapted to be engaged through a respective one of said openings and positionable longitudinally of the receiver, a bridge attached orthogonally to the hanger for positioning in said one of said openings with the inner part so positioned, and an outer part extending generally in parallel with the inner part and attached to the bridge whereby in use the hanger can be engaged through a selected one of the openings until the bridge is positioned in the opening whereupon the hanger extends along the length of the receiver and the outer part can be engaged downwardly over said upper edge until the bridge meets the upper edge so that the auxiliary backrest is then hanging from the fixed backrest held in position by the adjustable attachment.