Transmission with countershaft brake and method for braking a countershaft
US9188176B2 · kind B2 · utility
1Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2011 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Sep 6, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2003/123
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transmission with a countershaft brake includes a countershaft, a positive displacement pump including a pump housing having a chamber with an inlet and an outlet, the pump being driven by the countershaft, and a flow restrictor disposed at or downstream of the chamber outlet, the flow restrictor being adjustable to increase and decrease an amount of flow restriction from, the outlet of the chamber. Torque needed to drive the pump increases with an increasing flow restriction by the flow restrictor. A method for braking a countershaft in a transmission is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.