HST (hydro-static-transmission) system driving speed changing apparatus
US4870820A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1988 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Apr 8, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Y2200/223
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An HST system driving speed changing apparatus, including a hydraulic motor, which constitutes the HST system driving speed changing apparatus wherein the transmission case of the apparatus is also used as the hydraulic motor case. This construction facilitates assembly of the apparatus and therefore allows a savings in manufacturing cost. Also disclosed is an HST system driving speed changing apparatus, which provides a separate hydraulic pump. The pump has a changeable mounting position at the side surfaces of the transmission case, whereby the pump shaft can correspond to whichever direction the crank shaft of the engine is disposed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.