VEHICLE WALKING WHEEL Russian patent published in 1997 - IPC

FIELD: transport engineering; small-size vehicles designed for moving along smooth or irregular horizontal and inclined surfaces, including stairways; invalid chairs. SUBSTANCE: wheel has distributing valves 13 and bypass valves 14 providing automatic control of working fluid pressure in closed system, and additional hydraulic cylinders 8. Working chamber of each support hydraulic cylinder 7 is made two-space. Upper space accommodates damping piston which provides, together with additional hydraulic cylinders 8, smooth negotiating of irregular inclined surfaces considerably reducing vertical oscillations and increasing safety. Simple operation of wheel is provided by its capability to operate from single start and detachable (two-plate) design of hub 1 facilitating access to wheel units in case of failure. EFFECT: enlarged operating capabilities, improved reliability and safety. 7 dwg, 1 tbl