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:
Aug. 31, 2010
Filed:
Jun. 29, 2005
Rainer Mielke, Oberursel, DE;
Erik Johann, Berlin, DE;
Rainer Mielke, Oberursel, DE;
Erik Johann, Berlin, DE;
Abstract
In the repair of a blisk or blisk drum, the damaged airfoils are completely cut off a low-stress nodal line of the respective blade, except for a blade stump (), and are each replaced by a new blade repair element () of a same shape and size which is accurately clamped onto the blade root by a ledge () formed onto its mating end, with this ledge () also serving for fixation of the processing fixtures and stabilization of the thin airfoil, and is then welded to the blade root and subsequently subjected to a cutting or non-cutting operation for removal of the ledge (). This highly efficient repair method can similarly also be applied to the new manufacture of blisks.