Abstract: A bicycle seat suspension assembly has a parallelogram pivoting linkage connecting the frame with the seat. The parallelogram linkage has a frame link, seat link, upper link, and lower link. An upper spring assembly pivotally engages the frame link on one end and extends up to pivotally engage the upper link. A lower spring assembly pivotally engages the frame link on one end and the lower link on the other end. The suspension assembly is movable between an uppermost position wherein the upper and lower spring assemblies are pre-compressed, and a second position wherein the upper and lower spring assemblies are further compressed. In some embodiments one or both of the spring assemblies have a compression spring that can be swapped out with another compression spring to adjust the spring rate of the assembly.

Abstract: A bicycle seat suspension assembly has a parallelogram pivoting linkage connecting the frame with the seat. The parallelogram linkage has a frame link, seat link, upper link, and lower link. An upper spring assembly pivotally engages the frame link on one end and extends up to pivotally engage the upper link. A lower spring assembly pivotally engages the frame link on one end and the lower link on the other end. The suspension assembly is movable between an uppermost position wherein the upper and lower spring assemblies are pre-compressed, and a second position wherein the upper and lower spring assemblies are further compressed. In some embodiments one or both of the spring assemblies have a compression spring that can be swapped out with another compression spring to adjust the spring rate of the assembly.

Abstract: A suspension system for a bicycle comprises a first adapter, a second adapter, at least one upper link plate, at least one lower link plate, an upper resilient system, and a lower resilient system. The at least one upper link plate is connected between the first and second adapters. The at least one lower link plate is connected between the first and second adapters. The upper resilient system is connected between the first and second adapters. The lower resilient system is connected between the first and second adapters. The upper and lower link plates allow movement of the first adapter from a first position to a second position relative to the first adapter. The upper and lower resilient systems are arranged to bias the second adapter into the first position. The upper and lower resilient systems resiliently oppose movement of the second adapter towards the second position.