Patent ID: 7246836

Claim:
A suspension system for a seat adapted to be mounted to the floor of a vehicle, the suspension system comprising: a seat frame adapted to be mounted to the bottom of the seat; a floor frame adapted to be mounted to the vehicle floor; a first forward suspension rod and a first rear suspension rod, both interconnected at opposite ends to the floor frame and oriented generally parallel to each other; a second forward suspension rod and a second rear suspension rod, both interconnected at opposite ends to the seat frame and oriented generally parallel to each other and generally parallel to the forward and rear suspension rods; a pair of forward cams, each of said forward cams being rotatably mounted to both the first forward suspension rod and the second forward suspension rod; a pair of rear cams rotatably mounted to each of the first rear suspension rod and the second rear suspension rod; an equalizing bracket interconnected to at least one of forward cams and to at least one of the rear cams; a biasing member applying a biasing force between the seat frame and floor frame, and biasing the seat frame toward a default position with respect to the floor frame; a shock absorber dampening movement of the seat frame with respect to the floor frame; wherein movement of the seat frame from the default position against the biasing force of the biasing member causes rotation of the forward and rear cams, and wherein the interconnection of the equalizing bracket to the forward and rear cams synchronizes rotation of the forward and rear cams; at least one shock cam pivotably interconnected to one of the first and second, forward and rear suspension rods; wherein each of the forward and rear suspension rods includes a longitudinal axis; wherein one end of the shock absorber is mounted to the seat frame and an opposite end of the shock absorber is affixed to the at least one shock cam at a point spaced from the longitudinal axis of the suspension rod to which the at least one shock cam is mounted.