Method for repairing a casting
Patent 7047612 Issued on May 23, 2006. Estimated Expiration Date: 
May 2, 2023. 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.
May 2, 2023. 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 1777531 2120525 2632944 2751671 3192618 3246392 3392435 3445914 3449816 Process of working imperfections or defects on generally thickwalled metal worked-pieces Inventors
AssigneeApplicationNo. 10428871 filed on 05/02/2003US Classes:29/402.07, And by a metallurgical operation, e.g., welding, diffusion bonding, casting29/402.01, Repairing29/402.06, Removing material29/402.09, By attaching repair preform, e.g., remaking, restoring, or patching29/402.13, Metallurgically attaching preform29/402.16, Metallurgically attaching preform29/402.18, By applying fluent material, e.g., coating, casting228/227, Plural heat applying228/229, Separate and distinct heating of work and filler228/232, Including preheating164/103, Preheating228/103, With measuring, testing, indicating, inspecting, or illuminating29/888.06, Cylinder, cylinder head or engine valve sleeve making29/888.011, Repairing, converting, servicing or salvaging29/889.1, Repairing or disassembling433/223, Method of fabricating228/225, Plural filler applying228/119Repairing, restoring, or renewing product for reuseExaminersPrimary: Nguyen, GeorgeAssistant: Koehler, Christopher M. Attorney, Agent or FirmForeign Patent References
International ClassesB23P 19/04B23P 16/00 AbstractThis invention relates generally to a method for repairing a casting, and more specifically to a method of repairing a casting by pouring melted filler material into a damaged portion of the original casting. Damaged cast metal components, such as a cylinder head of an internal combustion engine are repaired by preheating the component to a first preheat temperature. The damaged area of the casting is then heated to a higher temperature using a torch and melted filler material is poured into the casting. The torch is used to maintain the temperature of the melted material for thirty seconds to two minutes. The temperature of the filler material is then cooled using compressed air.Other References
Field of SearchAnd by a metallurgical operation, e.g., welding, diffusion bonding, castingRepairing Seal or element thereof Replacing of defective part With disassembling By attaching repair preform, e.g., remaking, restoring, or patching Including reconditioning of part By shaping Removing material By applying fluent material, e.g., coating, casting Repairing, converting, servicing or salvaging Metallurgically attaching preform Metallurgically attaching preform Including heating Filling of opening Plural heat applying Separate and distinct heating of work and filler Including preheating Preheating | |
