Patent ID: 7611199

Claim:
A seat for use by an occupant in a vehicle, the seat comprising: a seat base configured to be supported in the vehicle; a back frame including a first transverse member, a first side member and a second side member, wherein the first transverse member interconnects each of the side members at a location toward an upper end of the back frame, the back frame further including a second transverse member interconnecting the first and second side members a spaced distance from the first transverse member; a compliant back member having a first end operably connected to the first transverse member and a second end operably connected to the second transverse member; and a biasing member having a first end including rollers which are aligned and operatively engage the compliant back member and a second end including an adjustable biasing member adjuster operatively coupled to a spring member, wherein when the occupant's back applies a force to the compliant back member, the biasing member applies a reaction force, and wherein the adjustable biasing member adjuster is configured to effect an amount of lower back tension within the compliant back member by causing a given end of the spring member to rotate.