Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Bulged by axially contracting ends
Patent
1997-06-12
1998-12-08
Saether, Flemming
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Bulged by axially contracting ends
411 48, 411 43, F16B 1304
Patent
active
058460390
ABSTRACT:
A positive lock rivet for joining a plurality of panels is composed of resilient plastic material and has a pin and a body having an axial bore. The pin has a head and a shank, the pin shank having a locking means, a break joint adjacent to the locking means and a break portion adjacent to the break joint and opposite the head. The body has a head and a shank. The body shank has a proximal end, a distal end, a collapsible portion and a noncollapsible portion. Integral with the proximal end of the body shank is a retention means and integral with the body shank between the collapsible portion and the body head is a flexible annular skirt positionable between the panels to be joined. The body shank is insertable into aligned holes in the panels. The pin is drawn into the body until the pin head engages the distal end of the body shank, causing collapse of the collapsible portion of the body shank and flexure of the annular skirt until the locking means engages the retention means, thereby tightly locking the rivet assembly. The break portion of the pin shank is then broken off at the break joint flush with the body head.
REFERENCES:
patent: 4012984 (1977-03-01), Matuschek
patent: 4222304 (1980-09-01), Yoshida
patent: 4639175 (1987-01-01), Wollar
patent: 5540528 (1996-07-01), Schmidt
patent: 5568675 (1996-10-01), Asami
Kirchen James T.
Massof Edward P.
Nesky Robert
Illinois Tool Works Inc.
Saether Flemming
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