Joints and connections – Rigid angle
Patent
1982-09-24
1985-07-23
Scanlan, Jr., Richard J.
Joints and connections
Rigid angle
403283, 411179, 29432, F16B 39282
Patent
active
045306192
ABSTRACT:
A self-retaining nut, and panel assembly, in which the nut body includes a shoulder portion having two or more panel piercing pins which, are caused to pierce the panel and are bent to secure the nut to the panel. In addition, a piercing and extruding punch pierces the panel and causes extrusion or cold flow of the panel metal in the piercing region to flow into a enlarged bore or undercut portion of the nut to further aide in its retention. The assembly of the nut type fastener and the sheet panel can be accomplished in a method of application in which the pins are caused to pierce the panel, bent into fastening position and the panel is pierced and extruded to provide an opening for a threaded fastener to be secured to the nut while causing cold flow of panel material into the nut for further retention in essentially one operative step.
REFERENCES:
patent: 2217026 (1940-10-01), Nickerson
patent: 2486769 (1949-11-01), Watson
patent: 2745458 (1956-05-01), Bedford
patent: 3078900 (1963-02-01), Walker
patent: 3337946 (1967-08-01), Anderson et al.
patent: 3405752 (1968-10-01), Neuschotz
patent: 3987830 (1976-10-01), Ladouceur
patent: 4348140 (1982-09-01), Bergholz et al.
Buell Industries, Inc.
Scanlan, Jr. Richard J.
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