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US 4,618,016 AGranted
Motor vehicle such as a tractor
OwnerCornelis van der Lelyinventor
Life of this patent
Estimating the term…
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OwnerCornelis van der Lelyinventor
Estimating the term…
A tractor has a hydraulically driven PTO shaft disposed at one side and generally centrally so that it can be connected to an input shaft of an implement extending laterally from the tractor's rear lifting device. The tractor's engine is between its wheels and its drive shaft is transverse to the tractor's longitudinal centerline. The width of the engine is less than the width from outboard side to outboard side of the tractor's front wheels. The fuel tank is offset on one side of the tractor opposite the aforesaid PTO. The front wheels of the tractor are situated within the tracks of the rear wheels so that the tracks do not overlap and are about equal distances apart. All wheels are driven by individual hydraulic motors. Hydraulic motors also drive the aforesaid PTO shaft and two further PTO shafts which extend to the tractor's rear, one centered with respect to the tractor's three-point lifting device and the other to one side thereof. An alarm alerts the operator if the power required for the tractor's propulsion is a disproportionate share of that available whereby there is insufficient power for the aforesaid or other PTO shafts and any implements connected thereto. The hydraulic fluid which drives the wheels can be delivered to the front or rear wheels either in series to ensure both wheels are powered or in parallel.
A motor vehicle comprising an engine, a frame which supports the engine, forward and rear ground wheels supporting said frame, at least one lifting device and a power take-off shaft which is drivable by the engine and which extends in the intended direction of normal operative travel of the vehicle and is disposed at one side of the vehicle, the power train between said engine and said shaft being disposed between said forward and rear ground wheels as seen from the side, and means for adjusting the lateral position of said power take-off shaft relative to its distance from the vehicle's longitudinal centerline, said power take-off shaft being arranged to extend beyond the vehicle's side so that auxiliary shafts from machines or implements attached to the vehicle and having a working width extending beyond the vehicle can be coupled with said power take-off shaft without being substantially misaligned with said power take-off shaft.
A motor vehicle comprising an engine supported by a frame, four ground wheels interconnected to and supporting said frame, a hydraulic pump driven by said engine, separate hydraulic motors driving at least two of said wheels, a hydraulic circuit from said pump to said motors, valve means in said hydraulic circuit controllable by the operator of the vehicle which is adapted to supply hydraulic fluid to each said motor for operating same selectively either in series to prevent wheel slippages under unfavorable soil conditions or in parallel for normal operations.
A motor vehicle comprising an engine supported by a frame, forward wheels and rear wheels interconnected to and supporting said frame, a power take-off shaft drivable by said engine extending from one side of the tractor between said forward and said rear wheels on that side, said power take-off shaft being adapted to drive implements connected to the vehicle and extending normally outboard relative to that side of the vehicle, a fuel tank for said engine supported by said frame on the other side of said tractor, said fuel tank being spaced outboard from the tractor's longitudinal centerline and entirely located on said other side which is opposite to said one side on which said power take-off shaft is located and which is between said forward and said rear wheels on such other side.
Dependencies are inferred from the claim text.