Annular seal for a gas turbine engine
US4438939A · kind A · utility
12Cited by
13References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1981 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Apr 22, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J3/047
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An annular seal for a gas turbine engine comprises a stacked plurality of Belleville washers with at least some of their abutting peripheries held together by U-section rings. If only those peripheries pointing toward a lower pressure area are retained together, gas pressure will hold the other peripheries together. Because the U-section rings do not prevent the washers from changing the angle of their section, relatively large axial motion between the sealed members may be tolerated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.