Water-hydraulic machine
US7188562B2 · kind B2 · utility
9Cited by
16References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 2003 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Apr 18, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2253/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a water-hydraulic machine with at least two mutually movable parts, of which one has a surface of a plastic material with friction-reducing properties. In such a machine it is desired to enable the use of demineralised water. For this purpose, it is ensured that a layer of a carbon-containing material is arranged between the plastics material and the other part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.