Compact electrohydraulic motor pump unit
US6746218B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 2002 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Aug 23, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/22
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A compact electrohydraulic motor pump unit comprising a housing which forms a reservoir for a pressurized fluid and contains an electric motor, and which comprises a first housing sealing section, a second housing sealing section and a tubular housing mid-section therebetween. Disposed between the second housing sealing section and the electric motor is a support plate for a pump which can be driven by the electric motor via a motor shaft and by which pressurized fluid can be conveyed on a pressurized flow path to a delivery connection. In such a conventional type motor pump unit, a circumferential seal, which is intended to seal off the interior of the housing, is located both between the support plate and the housing mid-section and between the support plate and the second housing sealing section. In order to reduce the number of sealing points between the interior and the exterior of the housing, the delivery connection is located externally on the second housing sealing section, and the second housing sealing section and the tubular housing mid-section, sealing off the interior of the housing from the outside, rest against one another peripherally and the support plate is locat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.