Title: Tandem wheel proportioning arrangement

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.

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Inventors: Meisel, Jr., Thomas C. (Peoria, IL, US)

Application Number: 883603
Filing Date: 1978-03-06
Publication_date: 1980-09-16
Assignee: Caterpillar Tractor Co. (Peoria, IL)
Primary Class(es): 280/5.52 180/24.02, 267/187, 280/124.161, 280/683
Other Classes:
US Patent Ref:

3039789	Jun, 1962	Schnuerle	280/678.
3441102	Apr, 1969	Kress	280/683.
3871635	Mar, 1975	Unruh	267/11.
3953040	Apr, 1976	Unruh	280/6.
3966222	Jun, 1976	Felburn	280/685.
3970327	Jul, 1976	Dezelan	280/683.
3977694	Aug, 1976	Nordstrom	280/112.
4047736	Sep, 1977	Prive	280/683.
4090723	May, 1978	Hart	280/6.

Other Refs:
Primary Examiner: Silverstrim, John P.
Assistant Examiner:
Attorney: Phillips, Moore, Weissenberger, Lempio & Majestic