Pneumatically assisted continuously variable transmission
US9476486B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2013 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Sep 27, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H63/065
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A CVT pulley includes a shaft having disposed thereon, a first and second sheave, and a spider. A spring biases the sheaves away from one another. The axially moveable second sheave is disposed axially between the axially fixed spider and the first sheave. A plurality of centrifugal weights, connected to either the spider or the second sheave, have a portion that moves radially outward with rotation of the shaft. The axial distance between the spider and the second sheave depends at least in part on the radial position of the portion which depends on the rotational speed. At least one cylinder is adapted to receive fluid. At least one piston, rotatable with the shaft, is adapted to move in the at least one cylinder in response to fluid being received therein, thereby selectively exerting force on one of the sheaves towards the other. CVTs and vehicles are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.