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US 2016/0116036 A1Published application
Gear scheme for infinitely variable transmission
AssigneeAllison Transmission, Inc.
InventorBrian Schoolcraft
Life of this patent
Estimating the term…
Abstract
A gear scheme for an infinitely variable transmission includes an input shaft, an output shaft, a variator, and a pair of planetary gearsets located beside the variator rather than in front of or behind the variator. The variator and the planetary gearsets are coupled between the input and output shafts.
Claims20
An infinitely variable transmission having a geared neutral mode and at least three forward operating modes, comprising
- an input shaft,
- an output shaft spaced from the input shaft,
- a variator having continuously variable torque output, the variator being coupled between the input shaft and the output shaft, and
- a pair of planetary gearsets coupled between the input and output shafts, coupled to each other and coupled to the variator, the planetary gearsets being positioned beside the variator in the transmission.
1 more element
An infinitely variable transmission, comprising
- a variator,
- a pair of planetary gearsets laterally spaced from the variator, each of the planetary gearsets having at least one component coupled to each other and at least one component coupled to the variator,
- a plurality of output gearsets coupled to the planetary gearsets and the variator, and
- first, second, third and fourth torque transmitting mechanisms, the first torque transmitting mechanism being engageable to place the transmission in a geared neutral mode, the second torque transmitting mechanism being engageable to place the transmission in a first forward operating mode, the third torque transmitting mechanism being engageable to place the transmission in a second forward operating mode, and the fourth torque transmitting mechanism being engageable to place the transmission in a third forward operating mode.
1 more element
An infinitely variable transmission, comprising
- a first centerline comprising a variator and between zero and two output gearsets and between zero and two selectively engageable torque transmitting mechanisms,
- a second centerline parallel to and spaced from the first centerline and comprising at least one of an input shaft and an output shaft, and
- a third centerline spaced from and parallel to both the first and the second centerlines and comprising a pair of planetary gearsets, each planetary gearset having at least one component connected to a component of the other planetary gearset, between zero and three output gearsets and between zero and four selectively engageable torque transmitting mechanisms.
Dependencies are inferred from the claim text.