US Patent 9950653 Seat suspension system

The present invention is a seat bottom suspension system adapted to provide a varying spring constant. An embodiment includes a first plurality of flat elongated biasing members in communication with at least one axle adapted to translate in a direction generally parallel with the longitudinal axis of the flat elongated biasing members. An embodiment may include a second set of flat elongated biasing members set at a lower height than the first plurality of flat elongated biasing members to provide a progressive increase in the spring constant as the down force seen on the seat increases.