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Article: British Inventor Develops Grooved Workpiece Formation Method
- Article from:
- US Fed News Service, Including US State News
- Article date:
- July 9, 2007
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ALEXANDRIA, Va., July 9 -- Derek Crutchley of Warrington, Great Britain, has developed a split die for forming grooved workpiece.
According to the U.S. Patent & Trademark Office: "A method of forming a radially expandable externally grooved tubular fastener from metal, comprising the steps of providing a suitable tubular blank having a tubular wall and squeezing the tubular wall between an internal member with a surface which engages the internal tubular wall face of the blank and a plurality of external members provided with suitably shaped surfaces engaging the external tubular wall face of the blank thereby to form grooves on the external tubular wall face of the blank."
The inventor ...