Multiple countershaft transmission
US4640145A · kind A · utility
12Cited by
11References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1981 |
| Grant date | Feb 3, 1987 |
| Priority date | — |
| Expiry date | Jul 31, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19233
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved, multiple substantially identical countershaft assembly (16, 16A), change gear transmission (10) having at least two (20, 20A) countershafts is provided. The input gear (14) and each mainshaft gear (42, 44, 46, 48) is constantly engaged with a countershaft gear (24 and 24a, 26 and 26a, 28 and 28a, 30 and 30a, 32 and 32a) carried by each countershaft and all or substantially all of said input gear and mainshaft gears are provided with a number of gear teeth not evenly divisible by the number of countershafts whereby the level of noise generated by the meshing of the gear teeth is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.