Land vehicles – Wheeled – Extensible
Patent
1980-02-06
1983-04-12
Mitchell, David M.
Land vehicles
Wheeled
Extensible
180 2402, 180DIG2, 280 4323, 280677, B62D 6110
Patent
active
043795714
ABSTRACT:
A trailer to be towed by a tractor is provided with structure for raising or lowering wheels relative to the trailer bed in accordance with the type of terrain to be traversed. Structure also is provided for shifting the wheels toward and away from one another transversely of the trailer bed and generally axially of the wheels to provide greater or lesser lateral stability in accordance with the roadway or terrain to be traversed.
REFERENCES:
patent: 2519002 (1950-08-01), Steven et al.
patent: 3240506 (1966-03-01), McMullen
patent: 3305876 (1967-02-01), Hutt
patent: 3429585 (1969-02-01), Ross
patent: 3467408 (1969-09-01), Regalia
patent: 3533641 (1970-10-01), Driskill
patent: 4040643 (1977-08-01), Applequist et al.
patent: 4049143 (1977-09-01), Hatakka et al.
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