Speed control apparatus for a continuously variable speed
US5014574A · kind A · utility
5Cited by
12References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1988 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Nov 4, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H59/44
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A speed control apparatus for a continuously variable speed transmission comprises ratio control units for controlling a speed reduction ratio and a manual value for selecting either a running range where engine power is transmitted to the wheels or a neutral range where the engine power is not transmitted to the wheels. The speed reduction ratio is controlled by the ratio control units so as to coincide with a reference speed reduction ratio corresponding to the vehicle speed detected by a speed sensor when the neutral range is selected by manual valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.