Continuously variable transmission with wide transmission ratio range
US5643131A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1995 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Sep 14, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19144
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention concerns a continuously variable transmission having a driving and a driven shaft (1, 9) and first and second intermediate shafts (10, 11). Power is transmitted to the driven shaft (9) through a transmission variometer with i.sup.2 arrangement. According to the invention, the input power of the transmission is transmitted to the driven shaft through a transmission branch with constant ratio and through the continuously variable transmission branch. This power distribution reduces the proportion of the power transmitted through the continuously variable transmission branch. The transmission efficiency of the whole transmission may, in particular, be thus improved. This continuously variable transmission is designed for use in private cars and light utility vehicles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.