Abstract: This invention provides a wheelchair small wheel suspension system which optimizes parameters of height, trail, and forward extension of the small wheels to provide a wheelchair with maximum stability and ability to negotiate rough surfaces. This suspension system is applicable to both manual and powered chairs. It uses an elastomer block to cushion the impact of road surface imperfections. The location of the elastomer block with respect to the wheel and the system's connection to the wheelchair frame is an important aspect of this invention. Tuning of the wheelchair suspension system to meet the individual user's requirements is easily accomplished using this suspension system.

Abstract: Embodiments of a new bicycle seatpost with an integrated suspension system are disclosed in which the seatpost may be mounted on a bicycle and upon which a seat may mounted and in which a rider is cushioned from bumps by two parallel linkages with resilient means interposed allowing the seat to react to bumps by resiliently rocking to the rear and downward while maintaining constant saddle angle and minimizing change in seat to pedal distance due to suspension movement.

Abstract: A bicycle seatpost with an integrated pivotal suspension system. The seatpost has a lower piece and an upper piece joined by a pivot pin which allows the upper piece to rotate in a rearward and downward direction. A spring is interposed between the upper piece and the lower piece to provide resilient suspension.