Parts for and methods of repairing turbine blades
Patent 4832252 Issued on May 23, 1989. Estimated Expiration Date: 
December 16, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 16, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3564689 3854189 Method of refurbishing turbine vane or blade components Method for repairing a turbomachinery blade tip Method of manufacturing rotor blade Turbine blade repair Patent #: 4611744 InventorAssigneeApplicationNo. 07/133527 filed on 12/16/1987US Classes:228/119, Repairing, restoring, or renewing product for reuse228/226, Diverse fillers228/231, Including post-heating228/232, Including preheating29/402.13, Metallurgically attaching preform29/402.16, Metallurgically attaching preform29/889.1, Repairing or disassembling416/224, Having wear liner, sheathing or insert416/241RCoating, specific composition or characteristicExaminersPrimary: Godici, Nicholas P.Assistant: Heinrich, Samuel M. Attorney, Agent or FirmInternational ClassesB23P 6/00 (20060101)B23P 15/04 (20060101) F01D 5/00 (20060101) Foreign Application Priority Data1986-12-20 GBAbstractA part and method for repairing a high velocity fluid flow machine part, for example a turbine blade comprises an insert which may be made from a piece of material the same as the turbine blade and prior to attachment to the blade has an edge region hardened by any suitable means, for example induction hardening, the insert then being secured to the blade by welding or brazing, the weld or braze material being of a relatively soft nature to provide a cushion between the insert and the blade so as to minimize the occurrence of stress corrosion cracking. | |
