Multi-speed planetary transmission
US10533644B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2016 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Feb 18, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2046
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A multi-speed transmission including a plurality of planetary gearsets and a plurality of selective couplers to achieve at least nine forward speed ratios is disclosed. The plurality of planetary gearsets may include a first planetary gearset, a second planetary gearset, a third planetary gearset, and a fourth planetary gearset. The plurality of selective couplers may include a number of clutches and a number of brakes. The multi-speed transmission may have four planetary gearsets and six selective couplers. The six selective couplers may include three clutches and three brakes. The four planetary gearsets may include three minus planetary gearsets and one plus planetary gearset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.