Hydraulic control system for continuously variable V-belt transmission
US4533340A · kind A · utility
17Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1983 |
| Grant date | Aug 6, 1985 |
| Priority date | — |
| Expiry date | Oct 20, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/66259
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic control system comprises a line pressure regulator valve which uses a spring has non-uniform spring rate. A spring is compressed between a pressure regulating element and a member movable responsive to a reduction ratio between drive and driven pulleys. A length of the spring is varied by the member with variation in the reduction ratio. The line pressure regulator valve generates a line pressure having non-linear characteristic with respect to the variation in the reduction ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.