Hydrostatic assembly having multiple pumps
US5354180A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 9, 1993 |
| Grant date | Oct 11, 1994 |
| Priority date | — |
| Expiry date | Jul 9, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Y2200/41
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hydrostatic assembly including a primary pump formed by a swash plate type axial piston engine and at least one coaxial secondary pump formed by a swash plate type axial piston engine. An elongated input shaft extends through the primary pump and is non-rotatably connected to the cylindrical drum of the primary pump. A control base is axially aligned with the cylindrical drum of the primary pump and forms a control surface opposite the closed end of the cylindrical drum of the primary pump. A recess is formed in the control base and the secondary pump is at least partially located in the recess and is non-rotatably connected to the elongated input shaft so that the secondary pump drives the primary pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.