Continuously variable speed transmission
US5295915A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1992 |
| Grant date | Mar 22, 1994 |
| Priority date | — |
| Expiry date | Oct 19, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H63/065
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A continuously variable speed transmission with first and second adjustable sheaves and an endless flexible element which is trained over the sheaves. A torque sensor is installed between a prime mover and the shaft for the first sheave to determine the axial position of the axially movable flange of the first sheave in dependency on the transmitted torque and the selected transmission ratio. The torque sensor employs an annulus of spherical rolling elements between the surfaces of two ramps one of which is movable axially of the shaft for the first sheave to initiate controlled radial and/or axial movements of the rolling elements. The surfaces of the ramps generate torque- and transmission ratio-dependent forces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.