Retractable wheeled vehicle

Details Retractable wheeled vehicle Retractable wheeled vehicle

B - Operations, Transporting

60

F

104/33.11

B60F 1/04 (2006.01)

Patent

CA 1192084

ABSTRACT OF THE DISCLOSURE A multiple-wheeled vehicle in which at least some of the wheels are upwardly retractable by rotation of arms carrying the wheels. Hydraulic cylinders control the rota- tional position of the arms, and movable rods are connected to the hydraulic cylinder means. Coil springs urge the rods toward a position where the hydraulic cylinders and arm means position the wheel in a relatively downward rotational posi- tion, so that the retractable wheels may be alternatingly re- tracted upwardly and lowered downwardly by the hydraulic cyl- inder means, while also possessing a spring suspension system. Additionally or alternatively, non-retractable rail wheels may be present, being driven by internal, planetary-type, differ- ential axle means defining internal brake means spaced central- ly inwardly from the rail wheels by a distance sufficient to avoid damage to the brakes upon derailment. Likewise, center pivot coupler means may be provided in which the coupler arm has roller members to roll along a plate, to facilitate the horizontal pivotal motion.

451511

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