Patent ID: 8684468

Claim:
A back support for use in combination with a chair having a backrest, the back support for bearing at least a portion of a weight of a person positioned in the chair, the back support comprising: first and second harness supports positionable at an upper region of the backrest of the chair, the first and second harness supports being spaced apart and extending generally upwardly from the backrest when positioned at the chair, and the first and second harness supports each having an upper portion; first and second harnesses, the first harness being suspendable from the upper portion of the first harness support and the second harness being suspendable from the upper portion of the second harness support, each of the first and second harnesses being engageable with the body of the person or being engageable with additional harness structure that engages the body of the person for transferring at least a portion of the weight of the person to the first and second harness supports; and a base support structure extending between and interconnecting the first and second harness supports, wherein the base support structure comprises a first and second base cross support extending between and interconnecting the first and second harness supports; and wherein the back support is securable to the chair.