Two speed transmission with smooth power shift
US7044877B2 · kind B2 · utility
20Cited by
3References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 16, 2004 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Sep 8, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2037/101
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A two speed transmission having an input shaft and an output shaft, the two speed transmission being capable of changing the rotating speed of the output shaft from a first speed ratio to a second speed ratio, the shift between the first rotating speed ratio and the second rotating speed ratio being smoothly accomplished by the present invention's combination of two sets of planetary gear clusters and two electric motors, the electric motors being used to smooth the mechanical shift between the first speed ratio and the second speed ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.