Ball type continuously variable transmission/infinitely variable transmission
First Claim
Patent Images
1. A variable transmission comprising:
- an input shaft;
a planetary gear set drivingly engaged with the input shaft;
a first brake mechanically coupled to an outer ring gear of the planetary gear set;
a variator comprising a variator carrier assembly, a first ring assembly, and a second ring assembly, the variator mechanically coupled to a ring gear of the planetary gear set;
a second brake mechanically coupled to a sun gear of the planetary gear set and to a first ring assembly of the variator; and
the second ring assembly of the variator drivingly engaged to a gearbox;
wherein the gearbox is drivingly engaged to an output of the variable transmission.
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Abstract
A variable transmission includes an input shaft, a planetary gear set drivingly engaged with a variator comprising, a variator carrier assembly, a first ring assembly, and a second ring assembly; and the output shaft, arranged with various combinations of brakes and clutches to produce transmissions with continuously variable or infinitely variable torque output ratios.
257 Citations
30 Claims
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1. A variable transmission comprising:
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an input shaft; a planetary gear set drivingly engaged with the input shaft; a first brake mechanically coupled to an outer ring gear of the planetary gear set; a variator comprising a variator carrier assembly, a first ring assembly, and a second ring assembly, the variator mechanically coupled to a ring gear of the planetary gear set; a second brake mechanically coupled to a sun gear of the planetary gear set and to a first ring assembly of the variator; and the second ring assembly of the variator drivingly engaged to a gearbox; wherein the gearbox is drivingly engaged to an output of the variable transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A variable transmission comprising:
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an input shaft; a clutch comprising a first clutch member coupled to the input shaft and a second clutch member; a variator comprising a first ring assembly having the second clutch member formed thereon, a second ring assembly drivingly engaged to an output of the variable transmission, and a carrier assembly; a planetary gear set comprising a sun gear drivingly engaged with the input shaft, one or more planet gears on a planet carrier that is drivingly engaged with a variator carrier of the carrier assembly, wherein a ring gear of the planetary gear set is held fixed; a first brake coupled to the first ring assembly configured to hold the first ring assembly fixed when the first brake is engaged, wherein the first ring assembly is drivingly engaged with the input shaft when the first clutch member engages the second clutch member, and the second ring assembly of the variator is drivingly engaged to a gearbox; wherein the gearbox is drivingly engaged to an output of the variable transmission. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification