Land vehicles – Wheeled – Running gear
Patent
1975-06-04
1976-07-20
Goodman, Philip
Land vehicles
Wheeled
Running gear
280 6H, 280709, B06G 1700
Patent
active
039703274
ABSTRACT:
A tandem axle suspension assembly for a vehicle includes a pair of axles pivotally supported to the vehicle frame and including resilient means supporting the frame above each of the axles. The resilient means includes fluid cylinders for each of the axles and a source of fluid in open communication with both sets of cylinders and an accumulator to maintain an even load distribution on the respective axles. The fluid system includes a valve responsive to the position of one of the axles with respect to the frame to maintain the frame and axles at a predetermined distance apart. Means are also provided for raising one of the axles from contact with the supporting ground.
REFERENCES:
patent: 2777652 (1957-01-01), Grudin
patent: 2970848 (1961-02-01), Rice
patent: 3690688 (1972-09-01), Fleury
Caterpillar Tractor Co.
Goodman Philip
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