Laminated finger seal with ceramic composition
US6736401B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2001 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Jan 23, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/442
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A ceramic finger seal for use between a housing and a combustor liner to inhibit air passage therebetween and for use in fluid sealing between a rotating shaft and a housing circumscribing the rotating shaft. The ceramic finger seal has at least two annular diaphragm members constructed of two or more diaphragm segments bonded end to end by ceramic cement or other high temperature joining compounds. The diaphragm members may be partitioned into a generally continuous inner diameter portion and a segmented outer diameter portion or the reverse thereof. The segmented portion includes finger elements spaced uniformly apart forming gaps therebetween and extend radially outward or inward terminating in a foot portion. The rolled edge on the finger is formed by laser cutting to prevent gouging of the combustor liner surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.