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:
Oct. 12, 1993
Filed:
Jan. 17, 1992
Avdel Systems Limited, Welwyn Garden City, GB;
Abstract
A self-plugging blind rivet, of the kind comprising a tubular body having a head and a shank which is deformed by means of a headed stem which is disposed in the body and pulled so as to form a blind head and, if necessary, to cause the shank to bulb so as to grip workpieces of lesser thickness than the maximum for which the rivet is designed, is so shaped and dimensioned as to avoid the need for a crimping or hardening operation to be performed on the shank. Thus the shank is made of uniform hardness, and has a waist and a tail portion, the waist being of reduced external diameter compared with the tail portion, and the tail portion having a length B and an external diameter D which are related to satisfy the expression