Land vehicles – Body elevation or tilt – Establishing riding or trim height
Patent
1978-03-06
1980-09-16
Silverstrim, John P.
Land vehicles
Body elevation or tilt
Establishing riding or trim height
180 2402, 267 11A, 280683, 280704, 280714, B60G 1700
Patent
active
042225787
ABSTRACT:
The invention relates to a tandem wheel arrangement for construction vehicles, such as a motor grader. Most particularly the invention relates to such an arrangement wherein both the forward and rearward wheels of the tandem wheel arrangement are mounted to levers and the levers are mounted to the vehicle frame. For example, when one of the roadwheels becomes elevated relative to the other when such roadwheel runs over a rock, a fluid circuit including cylinders interconnected between the vehicle frame and the levers, functions to change the lever relationship between the ascending and descending roadwheels such that the resistance to upward motion of the ascending wheel is reduced, a lowering force is imposed on the descending wheel to increase tractive effort thereof and the upward movement of the frame is reduced.
REFERENCES:
patent: 3039789 (1962-06-01), Schnuerle
patent: 3441102 (1969-04-01), Kress
patent: 3871635 (1975-03-01), Unruh
patent: 3953040 (1976-04-01), Unruh
patent: 3966222 (1976-06-01), Felburn
patent: 3970327 (1976-07-01), Dezelan
patent: 3977694 (1976-08-01), Nordstrom
patent: 4047736 (1977-09-01), Prive
patent: 4090723 (1978-05-01), Hart
Caterpillar Tractor Co.
Silverstrim John P.
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