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The Caterpillar Inc. patent solves the following problem:
Material handling machines both front and rear wheels driven, an engine mounted in an arbitrary position in the chassis usually drives a hydraulic pump that provides a hydraulic circuit feeding hydraulic motor associated with wheels. Such a hydraulic transmission is very inefficient compared to a mechanical transmission. Some of these have a machine with a telescope lift arm pivotally mounted between a taxi operator and a longitudinally extending engine (ie the rotary axis of the shaft engine is similar to the longitudinal axis of the machine).
Our analysis of this patent is as follows:
Caterpillar Inc.’s patent US 5707202 A deals with Material handling machine.
The machine has a chassis comprising a rigid longitudinal frame (1) whose width is less than 25% of the total width of the machine, except the wheels. A boom is pivotally mounted to the chassis. A drive arrangement (7) consists of a mechanically driven transmission (37, 39, 41) kinematically connected to a machine (34). Arrows (43, 44) kinematically connect a power output (42) mid-way along the drive arrangement (7) to the final drive units front and rear axle. The drive arrangement mounted on one side of the longitudinal frame (1) between the axles. The rotary axis (51) in mechanical shaft lies in a vertical plane inclined relative to the vertical longitudinal median plane (2) in the frame (1) so that the output end closer to the frame (1).
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