Hydraulic drive system
US6488111B1 · kind B1 · utility
8Cited by
10References
52Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1999 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Nov 26, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2540/18
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic drive system for a three-wheeled vehicle with drive assemblies including drive units having a single drive unit with two separate directly coupled drives and a pair of transverse drive units employing respectively separate directly coupled drives. There are hydraulic feed lines for parallel operation and for series operation, a secondary hydraulic feedline between the drive units and a secondary hydraulic feed line between the drive units and a hydraulic controller controls diverter valves for parallel and series operation. The hydraulic drive includes a steering system which senses out of line travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.