Valve stem repair kit and method
AssigneeSummit Tool Company
InventorsRoger Kliskey, Rockford Tyson
Life of this patent
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Abstract
A method for repairing damaged valve stem assemblies includes enlarging a bore within a body of a valve stem to form an enlarged bore portion and creating a conical hole in an end of the valve stem body around the enlarged bore portion. Internal threads are created within the enlarged bore portion, and a valve stem repair extension is installed in the enlarged bore portion. The valve stem repair extension has a beveled surface that mates with the conical hole to form a hermetic seal between the valve stem body and the valve stem repair extension. The steps of enlarging the bore and creating the conical hole may both be performed using a countersinking drill bit having a beveled cutting portion.
Claims7
A method of repairing damaged valve stems comprising:
- a. enlarging a bore within a body of a valve stem to form an enlarged bore portion;
- b. creating a conical hole in an end of the valve stem body around said enlarged bore portion;
- c. creating internal threads within said enlarged bore portion;
- and
- d. installing a valve stem repair extension in said enlarged bore portion, said valve stem repair extension having a beveled surface that mates with said conical hole to form a hermetic seal between said valve stem body and said valve stem repair extension.
Dependencies are inferred from the claim text.