Traction-drive transmission

Details Traction-drive transmission Traction-drive transmission

F - Mech Eng,Light,Heat,Weapons

16

H

74/109

F16H 3/70 (2006.01) F16H 15/50 (2006.01) F16H 37/08 (2006.01)

Patent

CA 1053031

TRACTION-DRIVE TRANSMISSION ABSTRACT OF THE DISCLOSURE The invention contemplates an improved mechanical traction drive providing a 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 an internal-combustion engine. The transmission involves 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, a stop or a reverse drive of the output shaft. For the particular disclosed form, provision is made for automatic downshifting reaction to increasing load, and major axial-reaction forces are self- contained by rotating mechanism, thus (a) avoiding substantial axial force components on main-bearings of the mechanism, and (b) reducing to very small magnitudes the requisite force for selective control actuation.

261221

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