Four speed countershaft transmission
US12104681B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2023 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Jan 10, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/0095
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Methods and systems for a multi-ratio gear box and four speed transmission are provided. In one example, a first shaft is coupled to one or more input speed reduction gear sets. A second shaft is coupled to a multi-range clutch having a first position and a second position allowing for two speeds. A third shaft is coupled to a low-speed clutch and a fourth shaft is coupled to a high-speed clutch, together doubling the number of speeds. The high and low-speed clutches provide a large gear spread that allow the multi-range clutches to have a reduced gear spread, overall reducing the required size of the transmission. A fifth shaft, coupled to the fourth shaft via a gear, may be an output shaft spaced away from the electric motors, thereby creating a short flange to flange distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.