MULTIPLE SPEED AUTOMATIC TRANSMISSION
First Claim
1. A multiple speed transmission for automotive vehicles, comprising:
- an input and an output;
a first epicyclic gearing assembly including a first clutch, a second clutch, a first brake, and first, second, third and fourth rotating members, said first clutch being operable to couple said first rotating member to the input, said second clutch being operable to couple said second rotating member to the input, and said first brake being operable to hold said fourth rotating member against rotation; and
a second epicyclic gearing assembly including a second brake, a third brake, a third clutch, and fifth, sixth, seventh and eighth rotating members, the third rotating member being secured to the eighth rotating member, said second brake being operable to hold said seventh rotating member against rotation, said third brake being operable to hold said fifth rotating member against rotation, said third clutch being operable to couple the seventh rotating member to the input, and said sixth rotating member being secured for rotation to the output.
1 Assignment
0 Petitions
Accused Products
Abstract
A multiple speed transmission includes an input and output; a first, second, third and fourth planetary gear sets, each gear set including a sun gear, a ring gear, a carrier, and pinions supported on the carrier and meshing with the sun gear and the ring gear; a first epicyclic gearing assembly including the first gear set, the second gear set, a first clutch, a second clutch, a first brake, and first, second, third and fourth rotating members, said first clutch being operable to couple said first rotating member to the input, said second clutch being operable to couple said second rotating member to the input, and said first brake being operable to hold said fourth rotating member against rotation; and a second epicyclic gearing assembly including the third gear set, the fourth gear set, a third clutch, a second brake, a third brake, and fifth, sixth, seventh and eighth rotating members, the third rotating member being secured to the eighth rotating member, said third clutch being operable to couple said seventh rotating member to the input, said second brake being operable to hold said seventh rotating member against rotation, said third brake being operable to hold said fifth rotating member against rotation, and said sixth rotating member being secured for rotation to the output.
32 Citations
17 Claims
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1. A multiple speed transmission for automotive vehicles, comprising:
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an input and an output; a first epicyclic gearing assembly including a first clutch, a second clutch, a first brake, and first, second, third and fourth rotating members, said first clutch being operable to couple said first rotating member to the input, said second clutch being operable to couple said second rotating member to the input, and said first brake being operable to hold said fourth rotating member against rotation; and a second epicyclic gearing assembly including a second brake, a third brake, a third clutch, and fifth, sixth, seventh and eighth rotating members, the third rotating member being secured to the eighth rotating member, said second brake being operable to hold said seventh rotating member against rotation, said third brake being operable to hold said fifth rotating member against rotation, said third clutch being operable to couple the seventh rotating member to the input, and said sixth rotating member being secured for rotation to the output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A multiple speed transmission for automotive vehicles, comprising:
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an input and an output; a first, second, third and fourth planetary gear sets, each gear set including a sun gear, a ring gear, a carrier, and pinions supported on the carrier and meshing with the sun gear and the ring gear; the sun gear of the first gear set being secured to the sun gear of the second gear set; the ring gear of the first gear set, the carrier of the second gear set and the ring gear of the fourth gear set being secured mutually; the sun gear of the third gear set being secured to the sun gear of the fourth gear set; the ring gear of the third gear set being secured to the carrier of the fourth gear set; the output being secured to the carrier of the third gear set; a first clutch for alternately driveably connecting and disconnecting the input to the sun gear of the first gear set and sun gear of the second gear set; a second clutch for alternately driveably connecting and disconnecting the input to the carrier of the first gear set; a third clutch for alternately driveably disconnecting and connecting the input to the ring gear of the third gear set and the carrier of the fourth gear set; a first brake for holding the ring gear of the second gear set against rotation; a second brake for holding the ring gear of the third gear set and the carrier of the fourth gear set against rotation; and a third brake for holding sun gear of the third gear set and the sun gear of the fourth gear set against rotation. - View Dependent Claims (15)
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16. A multiple speed transmission for automotive vehicles, comprising:
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an input and an output; a first, second, third and fourth planetary gear sets, each gear set including a sun gear, a ring gear, a carrier, and pinions supported on the carrier and meshing with the sun gear and the ring gear; the sun gear of the first gear set being secured to the ring gear of the second gear set; the carrier of the first gear set, the carrier of the second gear set, and the sun gear of the third gear set being secured mutually; the carrier of the third gear set being secured to the ring gear of the fourth gear set; the ring gear of the third gear set, the carrier of the fourth gear set, and the output being secured mutually; a first clutch for alternately driveably connecting and disconnecting the input to the sun gear of the second gear set; a second clutch for alternately driveably connecting and disconnecting the input to the ring gear of the first gear set; a third clutch for alternately driveably disconnecting and connecting the input to the carrier of the third gear set and the ring gear of the fourth gear set; a first brake for holding the sun gear of the first gear set and the ring gear of the second gear set against rotation; a second brake for holding the carrier of the third gear set and the ring gear of the fourth gear set against rotation; and a third brake for holding sun gear of the fourth gear set against rotation. - View Dependent Claims (17)
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Specification