The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 17, 2012
Filed:
Sep. 29, 2006
Nigel Anthony Rhodes, Newbold Verdon, GB;
Matthias Hoebel, Windisch, CH;
Walter Brehm, Gebenstorf, CH;
Alexander Schnell, Ennetbaden, CH;
Nigel Anthony Rhodes, Newbold Verdon, GB;
Matthias Hoebel, Windisch, CH;
Walter Brehm, Gebenstorf, CH;
Alexander Schnell, Ennetbaden, CH;
Alstom Technology Ltd., Baden, CH;
Abstract
A leaf seal for sealing a shaft rotating about an axis, in particular in a gas turbine, includes a plurality of spaced-apart leaves arranged in a concentric circle around the axis and fixed in position by brazing, the leaves having surfaces oriented essentially parallel to the axis. The leaves are brazed to one another via intermediate spacers made of a brazing foil, so that a brazed joint is produced by brazing alloy from the brazing foils. The brazing temperature may be set to an optimum value just above the solidus temperature of the brazing foil, at which partial melting of the brazing foil occurs and penetration of liquid brazing alloy into the gap between the leaves is avoided.