Land vehicles – Wheeled – Running gear
Patent
1980-05-12
1982-06-22
Peters, Jr., Joseph F.
Land vehicles
Wheeled
Running gear
180 2402, 280405A, B62D 5300
Patent
active
043358985
ABSTRACT:
A tandem axle load shifter is detachably engageable on the rear end of a trailer and includes a suspension frame assembly with tandem axles and wheels, connected to a pick-up frame assembly by means of a turntable for self-steering purposes. The pick-up frame assembly is detachably secured to the rear end of the trailer and has a guide wheel journalled on the underside thereof. A curved and ramped rail is secured to the suspension frame forwardly of the wheels and engages the guide wheels so that when the suspension frame turns, the rail rides up the wheel and the loading of the rail on the guide wheel assists the suspension frame assembly to return to the central position when the turn is completed. The mounting of the turntable is such that the vertical axis thereof is forwardly of the horizontal center line between the two axles thus giving a castoring effect to the suspension portion of the assembly which assists in maintaining the straight ahead trailing relationship of the assembly relative to the trailer under normal conditions.
REFERENCES:
patent: 2741489 (1956-04-01), Bigge
patent: 2772893 (1956-12-01), Wettstein
patent: 2919928 (1960-01-01), Hoffer
patent: 3112935 (1963-12-01), Gregg
patent: 3191962 (1965-06-01), Coordes
patent: 3542390 (1970-11-01), Fikse
patent: 3860257 (1975-01-01), Mesly
patent: 3895818 (1975-07-01), Fearon
patent: 4031976 (1977-06-01), Lambert
patent: 4161325 (1979-07-01), Schneider
patent: 4226437 (1980-10-01), Trudeau
Lesarge Kenneth
Orosz Andrew
Ade S. G.
Carroll John A.
Peters Jr. Joseph F.
Westank-Willock, a Division of Willock Industries Ltd.
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