Blind fastener

Details Blind fastener Blind fastener

1991-05-23

1992-04-07

Lindsey, Rodney M.

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

Having separate expander means

Frangible member

411 70, F16B 1304

Patent

active

051022745

ABSTRACT:
A fastener mandrel has formed on one end a spherically curved shoulder and an elliptically shaped head adjoining the shoulder. In setting the fastener in a workpiece, the shoulder enlarges the end of a tubular rivet and clamps workpieces together in combination with a preformed head on the other end of the rivet. The mandrel head deforms the rivet tail into an elliptical shape that partially encloses the mandrel head to provide good stem retention. A plurality of annular ribs on the mandrel stem are drawn into a reduced diameter section of the rivet head end when the rivet is set, thereby providing additional stem retention.

REFERENCES:
patent: 2533448 (1950-12-01), Forman et al.
patent: 2536353 (1951-01-01), Cooper
patent: 2538623 (1951-01-01), Keating
patent: 3047181 (1962-07-01), Heidenwolf
patent: 3073205 (1963-01-01), Siebol
patent: 3136204 (1964-06-01), Reynolds
patent: 3192821 (1965-07-01), Siebol
patent: 3257890 (1966-06-01), Kraemer
patent: 3426375 (1969-02-01), Jeal
patent: 4089249 (1978-05-01), Binns
patent: 4211145 (1980-07-01), Dolch
patent: 4236429 (1980-12-01), Dolch
patent: 4913609 (1990-04-01), Mauer
Brochure, Cherry Division of Textron Publication, pp. 1, 5, 6, 15, 16.

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