Seven-speed planetary transmission
US6773370B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Dec 16, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/201
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A seven-speed planetary transmission incorporates three planetary gearsets and six torque-transmitting mechanisms. Each of the planetary gearsets is a simple type planetary gearset, three of the torque-transmitting mechanisms are rotating type torque-transmitting mechanisms commonly termed clutches, and three of the torque-transmitting mechanisms are stationary type torque-transmitting mechanisms commonly termed brakes. A one-way torque-transmitting mechanism is included to simplify the engagement of the first of the forward speed ratios as well as to simplify the ratio interchange between the first and second of the speed ratios.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.