Multi-speed transmission
US9822856B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2015 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Apr 5, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2048
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A family of transmission gearing arrangements each establish at least one reverse gear ratio and between nine and fifteen forward gear ratios. A shiftable gearing arrangement establishes a variety of speed ratios between the input and a first shaft. In some embodiments, a fixed speed ratio is established upstream or downstream of the shiftable gearing arrangement. In reverse and low gear ratios, a low clutch couples the first shaft to the output. In the high gear ratios, a combining planetary gear set establishes a linear speed relationship between the first shaft, a second shaft rotating at a speed proportional to the input, and the output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.