Continuous speed-change branched gear, in particular for motor vehicles
US4976666A · kind A · utility
Inventor
Key dates
| Filing date | Feb 9, 1988 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Feb 9, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2037/0886
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A continuously variable split-path transmission particularly for motor vehicles comprises a stepless converter with a summation planetary gear unit for adding up the power which is split at the input shaft of the transmission into two power transmission paths. The specific requirements imposed on the stepless converter are minimal, and thus the efficiency values are favorable. The primary and secondary components of the stepless converter are small and can be advantageously incorporated into a modular unit. It is also possible to adapt such components to the specific requirements of different motor vehicles. The summation planetary gear is linked via a series of clutches to a second planetary gear unit having planetary elements which can be reciprocally coupled to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.