Countershaft transmission
US4823639A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1984 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Jun 4, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19405
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A countershaft transmission provides at least three forward and three reverse speeds and includes a first countershaft having a second gear secured thereto, a third gear rotatable thereon, and a first clutch for connecting the third gear thereto. A second countershaft has a fourth gear secured thereto which is intermeshed with the second gear, a fifth gear rotatable thereon, a sixth gear rotatable thereon, a seventh gear secured thereto, a second clutch for connecting the fifth gear thereto, and a third clutch for connecting the sixth gear thereto. A first gear is adapted to drive one of the side-by-side third and fifth gears, and a third countershaft is disposed elevationally below them. The third countershaft has an eighth gear secured thereto which is intermeshed with the sixth gear. Ninth and tenth gears are rotatable on the third countershaft and are selectively connected thereto by a fourth clutch and a fifth clutch respectively. An input shaft (14) is connected for joint rotation with the first gear (118) and with another gear (258), a further gear (260) is rotatable on the first countershaft (22) and intermeshed with the another gear ( 258), and another clutch (262) is prov…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.