Method for forming grooves on torsion wrench

Details Method for forming grooves on torsion wrench Method for forming grooves on torsion wrench

2006-08-15

2006-08-15

Hong, John C. (Department: 3726)

Metal working

Method of mechanical manufacture

Assembling or joining

C029S428000

Reexamination Certificate

active

07089643

ABSTRACT:
The present invention relates to a method for forming positioning grooves on torsion wrench, which is not only able to overcome the problem of high cost in milling grooves on torsion wrench, but also able to reduce material cost, the method including the steps as: First, Forming a base body of a torsion wrench; Second, Extrusion-forming positioning sleeve; Third, cutting the positioning sleeve; Fourth, assembling the positioning sleeve to the base body of the torsion wrench: Fifth, assembling adjustable ring and adjustable bushing.

REFERENCES:
patent: 4532832 (1985-08-01), Christensen
patent: 5299475 (1994-04-01), Stroop

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