Planetary transmission

Details Planetary transmission Planetary transmission

F - Mech Eng,Light,Heat,Weapons

16

H

74/122

F16H 1/32 (2006.01) F16H 3/64 (2006.01)

Patent

CA 1069734

PLANETARY TRANSMISSION Abstract of the Disclosure A planetary transmission for selectively shifting among four forward speed ratios includes a first ring gear secured to a drive shaft and encircling a single planet carrier which is secured to the driven shaft. The first ring gear meshes with a carrier journaled first planet gear set which meshes with a driven shaft-encircling first sun gear. The first planet gear set further meshes with a carrier journaled second planet gear set which has integrally connected thereto a third planet gear set. The third planet gear set meshes with a second sun gear and an encircling second ring gear. First, second, and third brakes are respectively connected to the second ring gear, the first sun gear, and the second sun gear to stop and allow rotation of said gears to provide three forward speed ratios between drive and driven shafts. A clutch is provided between the second sun gear and the planet carrier to selectively cause common rotation thereof to provide a fourth forward speed ratio.

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