Drive clutch for a continuously variable transmission with engine braking and built in belt protection
US8651986B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2010 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Oct 19, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/6618
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A drive clutch for a continuously variable transmission that includes an input shaft designed to engage with an engine. A sheave assembly is mounted about the input shaft. A bearing assembly separates the sheave assembly from the input shaft such that the input shaft can rotate independently from the sheave assembly. At least one sheave clutch assembly is positioned about the input shaft. The sheave clutch assembly is configured to provide engagement between the sheave assembly and the input shaft when the rotation of the input shaft increases above a certain threshold value. An axial control mechanism is mounted on the input shaft adjacent to the second sheave. The axial control mechanism controls the movement of the second sheave toward and away from the first sheave as a function of the speed of the input shaft. A continuously variable transmission including the drive clutch and a driven clutch is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.