Transmission with an ultra low speed range
US5044215A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1991 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Jan 31, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/194
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transmission includes a main shaft and a counter shaft. The gear ratio is changeable in accordance with the engagement between a main shaft gear train mounted on the main shaft and a counter shaft gear train mounted on the counter shaft. A low speed gear mechanism provides an extremely low speed range and includes a low speed shaft provided with a gear train and disposed coaxially with the main shaft. A first changeover sleeve is movable in order to bring the low speed shaft into and out of engagement with the main shaft. A second changeover sleeve is movable for selectively shifting a forward low speed gear train and a reverse low speed gear train into driving engagement between the low speed shaft and the counter shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.