Patent ID: 7083233
Filing Date: 2006-08-01
Classification: B60N

Abstract:
1. An adjustable floating plate lumbar support for seats, said adjustable floating plate lumbar support comprising: a lower support plate for providing support to a lumbar region of a seat, said lower support plate having a front surface and a rear surface; a lower plate support linkage for supporting said lower support plate, wherein said lower plate support linkage is adapted for engaging a seat frame, said lower plate support linkage having an effective length, said lower plate support linkage pivotally supporting said lower support plate; an upper support plate for providing support to a lumbar region of a seat and for providing adjustment of a vertical dimension of said support to said lumbar region, said upper support plate having a front surface and a rear surface, said upper support plate having a lower edge hingedly connected to said lower support plate; an upper plate support linkage for supporting said upper support plate, wherein said upper plate support linkage is adapted for engaging a seat frame, said upper plate support linkage having an effective length, said upper plate support linkage supporting said upper support plate in a pivotal manner; a first actuator mechanism for adjusting said effective length of said lower plate support linkage, whereby a curvature of the lumbar support provided by said lower support plate is increased as said effective length of said support linkage is decreased; and a second actuator mechanism for adjusting said effective length of said upper plate support linkage, whereby a curvature of the lumbar support provided by said upper support plate is increased as said effective length of said upper plate support linkage is decreased; whereby selective actuation said first and said second actuator mechanisms provides adjustment of a vertical dimension of said adjustable floating plate lumbar support.