Motor vehicles – Steering gear – Each wheel steerable
Patent
1996-04-24
1998-03-03
Ellis, Christopher P.
Motor vehicles
Steering gear
Each wheel steerable
280 611, 280 98, B62D 900
Patent
active
057225044
ABSTRACT:
The four-wheeled lift truck has a tight turning radius and improved stability, and is of the type having front wheels with independent powerplants. The rear turning wheels are mounted below the stems of respective hydraulic jacks that have vertical axes and are rigidly coupled to the chassis of the truck. The hydraulic circuits of the jacks are connected to one another, so that the lowering of one wheel is matched by a rise of the other. The stems of the jacks are interconnected by an articulation mechanism which mutually coordinates the turning angles of the wheels to move the maximum turning center to the intersection between the fixed axis of the front driving wheels and the centerline plane of the truck.
REFERENCES:
patent: 3086786 (1963-04-01), Tuczek
patent: 3556241 (1971-01-01), Mitchell
patent: 3933218 (1976-01-01), Oler et al.
patent: 4263979 (1981-04-01), Sturgill
patent: 4534575 (1985-08-01), Grove et al.
patent: 4823899 (1989-04-01), Ron
patent: 5325935 (1994-07-01), Hirooka et al.
Carer S.n.c. dell'Ing. Angelo Gaetani & C.
Ellis Christopher P.
Josif Albert
Modiano Guido
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