Roller control unit for a continuously-variable-ratio transmission
US6273839A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2000 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Sep 12, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/049
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A roller control unit (2) for a continuously-variable-ratio transmission includes a cylinder (6) having a cylinder wall and an end wall; and a piston (8), within the cylinder (6) and to which the roller assembly (4) is connected for movement therewith, said unit includes an axially extending shroud (10) of variable length extending between the piston (8) and the end wall, thereby to define in combination with the piston (8) and cylinder (6) a chamber (16) for receiving hydraulic fluid, and in which the shroud (10) comprises a telescopic shroud which in a first position of the piston (8) is extended and in a second position of the piston (8) is retracted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.