Power drive line having a wide range of speed ratios

Details Power drive line having a wide range of speed ratios Power drive line having a wide range of speed ratios

F - Mech Eng,Light,Heat,Weapons

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H

74/221

F16H 47/06 (2006.01) F16H 15/50 (2006.01)

Patent

CA 1156498

POWER DRIVE LINE HAVING A WIDE RANGE OF SPEED RATIOS A power drive line in which a continuously variable, nutating traction drive transmission unit is combined with a single planetary gear set to provide two forward modes and a reverse mode of drive line operation. A pair of transmission unit input shafts are alternately coupled to a power input to the overall drive line. In one forward mode, the planet gear is driven by the sun gear to rotate the ring gear in a relatively wide low speed range of speed ratios. In another forward mode, the transmission body carrying the planet gear is connected to be driven directly by the drive line power input to effect a relatively high range of output speeds for a given input speed. In the reverse mode, the body carrying the planet gear is held against planetary movement so that the planet gear operates as a reversing idler between the sun gear input and the ring gear output.

377705

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