Blind fastener

Details Blind fastener Blind fastener

1985-09-18

1987-09-29

Wolfe, Robert L.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having separate expander means

Bulged by axially contracting ends

411 43, 411 59, F16B 1306

Patent

active

046966102

ABSTRACT:
A blind fastener of the type wherein a cylindrical stem or mandrel pulled within a tubular sleeve or rivet body to cause legs formed in the latter to collapse outwardly into engagement with the blind side of a work piece. Such legs are formed in the rivet body by providing longitudinal cuts or slots, and each of such legs is deformed or crimped inwardly to provide an offset condition which virtually insures proper and effective outwardly collapsing of all of the legs, substantially simultaneously. The stem is further provided with a portion for engaging such legs at their respective offset locations to insure hole-filling and strong, firm setting of the collapsed legs against the work piece.

REFERENCES:
patent: 1111660 (1914-09-01), Malaby
patent: 3230818 (1966-01-01), Siebol
patent: 3368446 (1968-02-01), Glenn
patent: 3438301 (1969-04-01), Mattioli
patent: 3789728 (1974-02-01), Shackelford
patent: 4293258 (1981-10-01), McKewan
patent: 4475856 (1984-10-01), Toomingas
patent: 4566750 (1986-01-01), Umezu

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