Wheeled vehicle including step-traversing arrangment

Details Wheeled vehicle including step-traversing arrangment Wheeled vehicle including step-traversing arrangment

1991-04-05

1992-08-25

Spar, Robert J.

Land vehicles

Step or abutment ascending type vehicle

Jack-type attachment

2803041, 280 4727, 414490, B62B 502

Patent

active

051412403

ABSTRACT:
A wheeled vehicle includes a lifting device for lifting the vehicle over a step to be traversed. The lifting device includes a carriage mounted on the vehicle frame for vertical movement with respect thereto, lifting arms carried by the carriage and engageable with the step to be traversed, and a force-multiplying block and tackle assembly carried by the frame and coupled to the carriage for moving the carriage downwardly relative to the frame while the lifting arms engage the top of the step to be traversed to thereby lift the frame over the step.

REFERENCES:
patent: 2834602 (1958-05-01), Hanson
patent: 3055523 (1962-09-01), Wurn
patent: 3061323 (1962-10-01), Tittes
patent: 3269478 (1966-08-01), Joslyn
patent: 3330370 (1967-07-01), Morton
patent: 3734518 (1973-05-01), Sawmiller et al.
patent: 3896904 (1975-07-01), Walker
patent: 3907138 (1975-09-01), Rhodes
patent: 4057119 (1977-11-01), Melson

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