Abstract: A vehicle seat mounting system includes a seat mount plate and a vehicle mount plate. A vertically operable scissor linkage assembly is disposed between the seat mount plate and the vehicle mount plate and is oriented such that respective opposing ends of a first scissor arm and a second scissor arm are each secured to a respective one of the seat mount plate and the vehicle mount plate. A spring assembly is disposed between the seat mount plate and the vehicle mount plate and is oriented to cooperate with the scissor linkage assembly to resist translation between the vehicle mount plate and the seat mount plate. An adjuster assembly cooperates with the spring assembly and is operable to manipulate the proportion of the spring assembly that is available to be engaged to resist motion of the mounting system.

Abstract: A crisscross thermoforming assist plug assembly having a pair of oppositely outwardly facing thermoforming assist plugs each carried by a respective one of a pair of thermoforming assist plug linkage arrangements, where at least one link of the linkage arrangement is used to extend one of the assist plugs in one direction crosses but does not contact in a side view or profile of the thermoforming assist plug assembly, and at least one link of the other linkage arrangement is used to extend the other one of the assist plugs in an opposite direction. The links of the linkage arrangement preferably pivot about a common pivot axis that preferably is an elongate pivot shaft extending transversely between elongate upper rails of a frame of the assembly. At least one of the links of the linkage arrangement is a drive link that extends or retracts one of the plugs that crosses a drive link that extends and/or retracts the other one of the plugs.