The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 2007
Filed:
Apr. 15, 2003
Applicant:
Derek Crutchley, Warrington, GB;
Inventor:
Derek Crutchley, Warrington, GB;
Assignee:
Avdel UK Limited, , GB;
Primary Examiner:
Int. Cl.
CPC ...
B21K 1/60 (2006.01);
U.S. Cl.
CPC ...
Abstract
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 ().