Combination of slide members
US4664595A · kind A · utility
24Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1984 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Sep 14, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S384/907
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A novel combination of sliding members operable both under dry (without lubrication) and wet (with lubrication) states, which comprises a first member made of a ceramic and a second member made of hard metal containing at least 75% by weight cemented carbide. This combination is useful as a bearing means in a pump of a vertical or inclined shaft type so as to permit actuation of the motor in the dry state and thereafter to continue operation of the pump with lubrication being provided by part of the liquid being pumped. In certain aspects, the ceramic member may be divided into a plurality of segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.