Mechanical transmission with reduced ratio steps in upper transmission ratios
US6085606A · kind A · utility
9Cited by
27References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1998 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Nov 3, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19405
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A mechanical transmission (14) having a plurality of ratios (first-twelfth) and an automated system (10) utilizing same, has an upper group of ratios (seventh-twelfth) having a relatively small average ratio step (13%) compared to the average ratio steps (30%-40%) of comparable transmissions. This allows high-speed operation (35-70 mph) at or very nearing desired engine speed (112), emulating the characteristics of a CVT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.