Self-plugging blind fastener

Details Self-plugging blind fastener Self-plugging blind fastener

1987-12-21

1988-11-01

Wilson, Neill R.

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

Having separate expander means

Frangible member

411 34, 411 69, F16B 1304

Patent

active

047815019

ABSTRACT:
A self-plugging blind fastener of the break-stem type, is suitable for fastening apertured sheets together, and comprises a headed tubular body and an elongate stem disposed in the bore of the body. The stem comprises a plug, and a stem-tail connected to the plug by a breakneck which is concealed by overlapping lips. The plug has a stop face, and an annular locking groove between the breakneck and the stop face. The body has a deformable locking collar upstanding above an adjacent region of the upper surface of the head. The diameter of the bore reduces, to provide a stop face and a locking region of smaller diameter, within the head. The fastener is set by pulling the plug into the bore until the stop faces meet, to form a blind head, and then deforming the collar to force the body to bulge into the locking groove of the plug.

REFERENCES:
patent: 2397111 (1946-03-01), Huck
patent: 3044332 (1962-07-01), Siebol
patent: 3073205 (1963-01-01), Siebol
patent: 3285121 (1966-11-01), Siebol
patent: 3292482 (1966-12-01), Fry et al.
patent: 4137817 (1979-02-01), Siebol
patent: 4365495 (1982-12-01), Francis
patent: 4407619 (1983-10-01), Siebol
patent: 4627775 (1986-12-01), Dixon

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