Method of reinforcing threads

Details Method of reinforcing threads Method of reinforcing threads

1997-02-05

1998-06-30

Solis, Erick R.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

29888011, 292405, F02B 7700

Patent

active

057718563

ABSTRACT:
A method of reinforcing threads. Firstly, provide a workpiece. Secondly, determine the position on the workpiece that a hole is to be drilled and into which threads are to be tapped. Thirdly, bore an opening in the workpiece which transversely intersects the hole. The opening must have a diameter which is greater that a diameter of the hole. Fourthly, insert an insert into the opening in interference fit relation. The insert is of a harder material than the workpiece. Fifthly, bore the hole through the workpiece and into the insert. Sixthly, tap threads in the hole, such that a portion of the threads are reinforced by virtue of being tapped into the harder material of the insert.

REFERENCES:
patent: 3824888 (1974-07-01), Brooks
patent: 4570586 (1986-02-01), Roe
patent: 5072697 (1991-12-01), Sputhe
patent: 5259706 (1993-11-01), Gaut
patent: 5295773 (1994-03-01), Amoroso
patent: 5363823 (1994-11-01), Gittlein
patent: 5499892 (1996-03-01), Reed

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