Power shift planetary gear transmissions

Details Power shift planetary gear transmissions Power shift planetary gear transmissions

F - Mech Eng,Light,Heat,Weapons

16

H

74/125

F16H 57/10 (2006.01) F16H 3/66 (2006.01)

Patent

CA 1173275

ABSTRACT OF THE DISCLOSURE The present invention provides a multi-speed trans- mission, comprising: first and second series connected planetary gear sets, the output shaft of the first set operatively connected to the input shaft of the second set, each planetary gear set comprising a planetary pinion carrier which comprises the output member of its planetary gear set, a plurality of planetary pinions mounted in the said carrier, each pinion having at least two different gearing diameters, an input centrally disposed gear meshing with one of the gearing diameters and at least two other centrally disposed gears meshing one with each of the gearing diameters, a brake means for braking each of said other centrally disposed gears relative to the casing, a separate input centrally disposed gear for each. of the gearing diameters of the second planetary gear set, the input shaft of the second planetary gear set being connected to each of said input centrally disposed gears, and the two gearing diameters of the second planetary gear set being journalled on the carrier independently of each other.

385630

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