Hydrostatic transmission device for a heavy vehicle
US8333069B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2008 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | Dec 12, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K7/0015
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydrostatic transmission including a main pump, two main ducts serving respectfully as feed and as discharge for first and second hydraulic motors that serve to drive disposed one after the other. A bypass valve can take up a reduced-speed position in which the feed main orifices are connected to the discharge main duct, and an increased-speed position in which one of the motors is bypassed, the feed main orifice of the motor being connected to the discharge main duct via a bypass link, while the other main orifices continue to have their respective links. The apparatus further includes a constriction suitable for being activated to restrict the flow of fluid through the bypass link.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.