Apex seal material
US3964145A · kind A · utility
3Cited by
7References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1974 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | Mar 6, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C19/005
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of making and the resulting metallurgical product for an apex seal design and/or opposing rubbing surface is disclosed; the seal has ingredients so that it is effective to inherently contain a lubricating film have a retrograde solubility curve so that small additions of chromium can precipitate to achieve a hardening of the matrix, and in some instances an independent graphite lubricant is admixed. A specific example of the composition is a copper-based alloy having 0.1-0.6% chromium and 0.5-1.5% by weight graphite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.