Card seal for a turbine
US8132815B1 · kind B1 · utility
2Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2009 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Aug 26, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2250/70
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A card seal with an annular arrangement of cards that form the card seal, where the cards each form an L-shape cross section with a wide front face and a narrow side face, where the side face has a constant width from a top end to a location greater than a mid-point, and from this point decreases in width to zero width at the bottom end. The side faces form a blockage against leakage flowing between adjacent cards in a cards seal assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.