Motor vehicles – Special driving device – Portable track
Patent
1991-09-19
1993-03-09
Marmor, Charles A.
Motor vehicles
Special driving device
Portable track
180 946, 180 2402, B62D 5500, B62D 6110
Patent
active
051919524
ABSTRACT:
A track-type vehicle having first and second endless track assemblies and first and second steerable wheels includes a weight management apparatus including a measuring assembly for measuring the angle of steer of the steerable wheels, a hydraulic cylinder connected between the frame of the vehicle and the axles of the steerable wheels, and an actuating device for actuating control valves which control pressure of the pressurized fluid to the hydraulic cylinder. Controlling the pressure of the pressurized fluid supplied to the hydraulic cylinder, as a function of the angle of steer of the steerable wheels, changes the ground pressure applied by the steerable wheels and the track assemblies. The pressure of the fluid supplied to the hydraulic cylinder also determines the amount of contact the track assemblies have with the ground. Steering of track-type vehicles is more difficult than wheel-type vehicles due to the large contact area of the track assemblies with the ground. The subject weight management apparatus reduces the contact area of the track assemblies and provides easier steering of the vehicle.
REFERENCES:
patent: 1416379 (1922-05-01), Peone
patent: 1455906 (1923-05-01), Cox
patent: 2057211 (1936-10-01), Shere
patent: 2467947 (1949-04-01), Skelton
patent: 3499663 (1970-03-01), Hedlund et al.
patent: 3652106 (1972-03-01), Waterman
patent: 4448274 (1984-05-01), Van Der Lely
patent: 4631919 (1986-12-01), Brennan
patent: 5018593 (1991-05-01), Hermann
Satzler Ronald L.
Schmillen Edward E.
Caterpillar Inc.
Marmor Charles A.
White Claude F.
Zeender Florian
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