Welding method for cylinder head repair
Patent 4918805 Issued on April 24, 1990. Estimated Expiration Date: 
December 22, 2008. 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 22, 2008. 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 3192618 3246392 3445914 3449816 High temperature braze repair of superalloys Method of repairing heat resistant alloy parts Patent #: 4655383 InventorsAssigneeApplicationNo. 288521 filed on 12/22/1988US Classes:29/888.06, Cylinder, cylinder head or engine valve sleeve making228/119, Repairing, restoring, or renewing product for reuse228/232Including preheatingExaminersPrimary: Goldberg, Howard N.Assistant: Cuda, Irene Attorney, Agent or FirmInternational ClassB23P 015/00AbstractA method for weld repair and rebuilding of worn and cracked diesel engine cylinder heads of the pot-type is used in railway locomotive diesel engines and the like. The method involves carefully controlled preheating, welding and cooling steps. | |
