Planetary gear train
First Claim
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1. A planetary gear train comprising:
- an input member;
an output member;
a first planetary gear set including a first sun gear, a first ring gear and a first pinion carrier rotatably supporting first planet pinions;
a second planetary gear set including a second sun gear, a second ring gear and a second pinion carrier rotatably supporting second planet pinions;
first drive means for connecting said input member with said first ring gear;
second drive means for connecting said input member with said first sun gear;
third drive means for constantly connecting said first sun gear with said second sun gear and establishing a force transmitting positive drive from said first sun gear to said second sun gear,whereby said first sun gear rotates at a speed different from said second sun gear;
first brake means for braking said second sun gear;
second brake means for braking said second pinion carrier;
fourth drive means for connecting said second ring gear with said output member and providing a first speed ratio therebetween; and
fifth drive means for connecting said first pinion carrier with said output member and providing a second speed ratio therebetween, said second speed ratio being different from said first speed ratio.
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Abstract
A planetary gear train comprises a first planetary gear set and a second planetary gear set. These two planetary gear sets coact with a change speed mechanism means, in the form of a pair of intermeshed gears, to provide at least four forward speeds including an overdrive.
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Citations
43 Claims
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1. A planetary gear train comprising:
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an input member; an output member; a first planetary gear set including a first sun gear, a first ring gear and a first pinion carrier rotatably supporting first planet pinions; a second planetary gear set including a second sun gear, a second ring gear and a second pinion carrier rotatably supporting second planet pinions; first drive means for connecting said input member with said first ring gear; second drive means for connecting said input member with said first sun gear; third drive means for constantly connecting said first sun gear with said second sun gear and establishing a force transmitting positive drive from said first sun gear to said second sun gear,whereby said first sun gear rotates at a speed different from said second sun gear; first brake means for braking said second sun gear; second brake means for braking said second pinion carrier; fourth drive means for connecting said second ring gear with said output member and providing a first speed ratio therebetween; and fifth drive means for connecting said first pinion carrier with said output member and providing a second speed ratio therebetween, said second speed ratio being different from said first speed ratio. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A planetary gear train comprising:
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an input member; an output member; a first planetary gear set including a first sun gear, a first ring gear and a first pinion carrier rotatably supporting first planet pinions; a second planetary gear set including a second sun gear, a second ring gear and a second pinion carrier rotatably supporting second planet pinions; first drive means for connecting said input member with said first ring gear; second drive means for connecting said input member with said first sun gear; third drive means for connecting said first sun gear with said second sun gear; first brake means for braking said second sun gear; second brake means for braking said second pinion carrier; fourth drive means for connecting said second ring gear with said output member and providing a first speed ratio therebetween; and fifth drive means for connecting said first pinion carrier with said output member and providing a second speed ratio therebetween, said second speed ratio being different from said first speed ratio; wherein said third drive means includes a first change speed mechanism which connects said first sun gear with said second sun gear and a one-way clutch means coacting with said first change speed mechanism for connecting said first sun gear with said second sun gear for a one-way drive, and said fifth drive means includes a second change speed mechanism which connects said first pinion carrier with said output member. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification