Continuously variable transmission capable of torque control
US5766105A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Jun 13, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/66286
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A continuously-variable-ratio transmission ("CVT") of the band-and-sheave type capable of "torque control", so that what the operator demands, by movement of the accelerator pedal or other control member, is a particular driving torque applied to the ratio-varying components ("variator") A connection (21, 22) between at least one of the variator sheaves (3, 4) and its shaft (5) is torque-sensitive, so that torque at that sheave generates an axial force which is a function of the magnitude and direction of the torque to which the sheave is subjected. Examples are described in which the operating axial load, applied to the variator pulley units, comprises two parts--a first part to maintain traction between sheaves and band, and a second part related to the applied torque--and a variator using more than one band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.