Retractable wheeled vehicle

Details Retractable wheeled vehicle Retractable wheeled vehicle

1979-05-21

1982-10-26

Bertsch, Richard A.

Railway rolling stock

Trucks

Supplemental wheel

B61C 1100

Patent

active

043555845

ABSTRACT:
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 rotational 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 position, so that the retractable wheels may be alternatingly retracted upwardly and lowered downwardly by the hydraulic cylinder means, while also possessing a spring suspension system. Additionally or alternatively, non-retractable rail wheels may be present, being driven by internal, planetary-type, differential axle means defining internal brake means spaced centrally 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.

REFERENCES:
patent: 2986102 (1961-05-01), Cox
patent: 4167142 (1979-09-01), Ames
patent: 4240354 (1980-12-01), Newman

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