Traction-drive transmission with hydraulic control

Details Traction-drive transmission with hydraulic control Traction-drive transmission with hydraulic control

F - Mech Eng,Light,Heat,Weapons

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H

74/220

F16H 13/08 (2006.01) F16H 37/08 (2006.01)

Patent

CA 1115088

TRACTION-DRIVE TRANSMISSION WITH HYDRAULIC CONTROL ABSTRACT OF THE DISCLOSURE The invention contemplates an improved mechanical traction drive with a hydraulically implemented single control whereby a desired range of speed ratios between input and output shafts is selectively available, without requiring clutch connection to the power source, such as a battery-operated electric motor. The transmission employs a combination of completely mechanical friction-roller and meshing-gear planetary systems which are connected at all times, whether the single control is operated to call for a forward drive or a stop, and whether the motor is run in the direction to produce a forward or a reverse drive of the output shaft. Provision is made for auto- matically downshifting and upshifting the transmission via hydraulic means, in response to input-torque requirements and/or output-torque limitations. -1-

330416

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