Pulley for a continuously variable transmission
US7901308B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2004 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Jan 17, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H63/067
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pulley for a continuously variable transmission is provided with a fixed half-pulley fitted on a supporting shaft and a mobile half-pulley, which is able to slide towards the fixed half-pulley under the thrust of a spring, so as to define a V-shaped race of variable amplitude. The pulley is further provided with a device for compensating the axial thrust, said device being constituted by a cam and a cam follower, which are coupled in contact with one another to impart an additional axial thrust on the mobile half-pulley in response to a torque acting on the pulley. The cam is defined by a tubular body made of plastic material co-moulded on the supporting shaft, whilst the cam follower is made of a single piece with the mobile half-pulley.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.