Road structure – process – or apparatus – Apparatus – Automatic control
Patent
1987-01-20
1989-01-31
Massie, IV, Jerome W.
Road structure, process, or apparatus
Apparatus
Automatic control
404101, E01C 1922
Patent
active
048012181
ABSTRACT:
An improved "3-point" suspension for a bituminous paver disposes two of the suspension "points" at the front of the tractor unit and the third "point" at the rear. Preferably the third suspension "point" is achieved by suspending the rear of the tractor unit via laterally spaced hydraulic cylinders interconnected such that upward or downward movement of one rear wheel or track results in corresponding downward or upward movement of the other rear wheel or track. The hydraulic suspension also allows the height of the rear of the tractor unit, and thus the height of the spreader screws relative to the ground, to be adjusted on the run by conjoint upward or downward movement of both rear wheels or tracks.
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Cedarapids Inc.
Massie IV Jerome W.
Smith Matthew
LandOfFree
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