Hydraulic drive assist for scrapers

Details Hydraulic drive assist for scrapers Hydraulic drive assist for scrapers

1974-11-13

1976-09-21

Wood, Jr., M. H.

Motor vehicles

Vehicle trains

Motorized trailer

180 44M, 180 66R, 60468, 60449, B62D 5904

Patent

active

039813746

ABSTRACT:
An hydraulic drive supplies power to the rear wheels of a scraper at loading speeds providing a pushing assist to the tractor engine powering the tractor wheels at the front. The drive includes a piston type motor mounted on the stinger or pusher frame of the scraper and connected through a short torque shaft to a drive axle driving the scraper wheels. A signal generator senses ground speed to maintain the motor free-wheeling at speeds attainable by the tractor which would be destructive to the motor.

REFERENCES:
patent: 3053043 (1962-09-01), Knowler
patent: 3135087 (1964-06-01), Ebert
patent: 3293942 (1966-12-01), Stein et al.
patent: 3415057 (1968-12-01), Rosenberg
patent: 3449912 (1969-06-01), Dunikowski
patent: 3512277 (1970-05-01), Stuller
patent: 3584698 (1971-06-01), Larson
patent: 3612202 (1971-10-01), Moon, Jr.
patent: 3803843 (1974-04-01), Nyman
patent: 3841423 (1974-10-01), Holtkamp
patent: 3874470 (1975-04-01), Greene

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