Adjustable lumbar support for a chair back

Abstract

An adjustable lumbar support for a chair back having a frame with a top end and a bottom end. The frame has a series of flexing zones and a series of control zones. The adjustable lumbar support for a chair back further includes a support having a first end and a second end. The first end of the support is adapted to engage the top end of the frame. The adjustable lumbar support also includes a ratchet assembly having multiple preset locking positions for moving the support solely in a vertical plane while allowing for the moving and flexing of the lower flex zone and the chair back solely in a horizontal plane; wherein the ratchet assembly is mounted only to the second end of the support and the ratchet assembly is only mounted to the bottom end of the frame. The frame is mounted to the chair back.

1 . An adjustable lumbar support on a chair back comprising:
 a) a frame wherein the frame is further defined as a structure that is mounted to the chair back and mirrors a shape of a perimeter of the chair back, the frame having a top end and a bottom end, from the top end of the frame having an upper flex zone and pivoting flex points, a mid-control zone, a lower flex zone and a lower control zone;   b) a support having a first end and a second end, the first end of the support is mounted only to the pivoting flex points of the upper flex zone at the top end of the frame;   c) a ratchet assembly having multiple preset locking positions for moving the support solely in a vertical plane while allowing for the moving and flexing of the lower flex zone and the chair back solely in a horizontal plane; wherein the ratchet assembly is mounted only to the second end of the support and the ratchet assembly is only mounted to the bottom end of the frame.   
     
     
         2 . An adjustable lumbar support on a chair back as claimed in  claim 1  wherein the upper flex zone and the lower flex zone are spaced apart by the mid control zone and the lower control zone. 
     
     
         3 . An adjustable lumbar support on a chair back as claimed in  claim 1  wherein the lower flex zones of the frame flex out along a horizontal plane when the ratchet assembly is moved in an upward direction solely along the vertical plane, and flex in solely along a horizontal plane when the ratchet assembly is moved in a downward direction. 
     
     
         4 . An adjustable lumbar support on a chair back as claimed in  claim 3  wherein the mid and lower control zones of the frame further comprising additional supports that are inflexible and support the chair back. 
     
     
         5 . An adjustable lumbar support on a chair back as claimed in  claim 1  wherein the support is wish boned-shaped. 
     
     
         6 . An adjustable lumbar support on a chair back as claimed in  claim 5  wherein the wish boned-shaped support has two members that extend to the first end of the support and mount to the pivoting flex points at the top end of the frame. 
     
     
         7 . An adjustable lumbar support on a chair back as claimed in  claim 6  wherein the ratchet assembly further comprises a rack mounted to the wish boned-shaped support at the second end of the support adapted to engage a pivoting preset locking member mounted to the bottom end of the frame. 
     
     
         8 . An adjustable lumbar support on a chair back as claimed in  claim 1  wherein the chair back is mesh. 
     
     
         9 . An adjustable lumbar support on a chair back comprising:
 a) a frame wherein the frame is further defined as a structure that is mounted to the chair back and mirrors a shape of a perimeter of the chair back, the frame having a top end and a bottom end, from the top end of the frame having an upper flex zone and pivoting flex, points, a mid-control zone, a lower flex zone, and a lower control zone;   b) a support having a first end and a second end, the first end of the support is mounted only to the pivoting flex points of the upper flex zone at the top end of the frame;   c) a ratchet assembly having multiple preset locking positions for moving the support solely in a vertical plane while allowing for the moving and flexing of the lower flex zone and the chair back solely in a horizontal plane; wherein the ratchet assembly is mounted only to the second end of the support and the ratchet assembly is only mounted to the bottom end of the frame   d) an adjusting means for adjusting a chair seat along a horizontal plane when the ratchet assembly is engaged; wherein the ratchet assembly is mounted only to the second end of the support and the adjusting means is only mounted to the bottom end of the frame.   
     
     
         10 . An adjustable lumbar support on a chair back as claimed in  claim 10  wherein the upper and lower flex zones of the frame flex out along the horizontal plane when the ratchet assembly is moved in an upward direction solely along the vertical plane and the adjusting means moves the chair seat outward solely along the horizontal plane. 
     
     
         11 . An adjustable lumbar support on a chair back as claimed in  claim 11  wherein the upper and lower flex zones of the frame flex in, along the horizontal plane when the ratchet assembly is solely moved in an downward direction along the vertical plane and the adjusting means moves the chair seat inward along the horizontal plane. 
     
     
         12 . An adjustable lumbar support on a chair back as claimed in  claim 10  wherein the support is wish boned-shaped. 
     
     
         13 . An adjustable lumbar support on a chair back as claimed in  claim 10  wherein the upper flex zone and the lower flex zone are spaced apart by the mid control zone and the lower control zone.