Blind rivet

Details Blind rivet Blind rivet

2008-07-08

2008-07-08

Tolan, Edward (Department: 3725)

Threaded, headed fastener, or washer making: process and apparat

Process

Making headed fastener, e.g., rivet or nail, etc.

C470S028000

Reexamination Certificate

active

11541943

ABSTRACT:
A blind rivet formed with a tubular shell, and a mandrel extending through the shell. The shell has an outwardly extending flange at one end forming a rivet head, and having a first set of radial indentations arranged around the periphery of the shell at a first distance from the rivet head, and a second set of radial indentations arranged around the periphery of the shell at a second distance from the rivet head. Each of the radial indentations are formed by crimping them in the rivet shell after the shell has been positioned around the mandrel with the end of the shell remote from the rivet head defining the blind end of the rivet shell. Lastly, the mandrel having a head formed at one end to abut against the blind end of the shell, and the stem extending from the head having a point of weakness part way along the length thereof disposed within the shell.

REFERENCES:
patent: 1365719 (1921-01-01), Ogden
patent: 2324142 (1943-07-01), Eklund
patent: 2385831 (1945-10-01), Mullgardt
patent: 3414965 (1968-12-01), Siebol et al.
patent: 3426375 (1969-02-01), Jeal
patent: 3463046 (1969-08-01), Wendt et al.
patent: 4958971 (1990-09-01), Lacey
patent: 5496140 (1996-03-01), Gossmann
patent: 6254324 (2001-07-01), Smith
patent: 84 30 648 (1984-11-01), None
patent: 0 168 355 (1986-01-01), None
patent: 0 677 666 (1995-10-01), None
patent: 1 030 069 (2000-08-01), None

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