Fastener with integral locking means

Details Fastener with integral locking means Fastener with integral locking means

1988-07-11

1990-02-27

Wilson, Neill R.

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

Having separate expander means

Frangible member

411 70, 29512, 295241, F16B 1304, F16B 1306, B21D 3900

Patent

active

049041339

ABSTRACT:
A blind fastener for securely and economically fastening a plurality of members having a mandrel with an enlarged head and a generally cylindrical stem with a locking groove, and a sleeve with a generally tubular portion surrounding a portion of the stem, a flange extending radially from the end of the tubular portion opposite the stem head, and a boss extending axially from the flange opposite the tubular portion, so that application of tension to the stem and compression to the boss causes upsetting of the fastener, compression of the members, elongation of the stem, and displacement of the boss material into the locking groove, thereby locking the mandrel and sleeve to prevent them from springing back upon breaking of the mandrel stem.

REFERENCES:
patent: 2371452 (1945-03-01), Lees, Jr.
patent: 3114921 (1963-12-01), Carusi
patent: 3178989 (1965-04-01), Siebol
patent: 3194106 (1965-07-01), Carusi et al.
patent: 3230818 (1966-01-01), Siebol
patent: 3232162 (1966-02-01), Ketchum
patent: 3285121 (1966-11-01), Siebol
patent: 3292482 (1966-12-01), Fry et al.
patent: 3657957 (1972-04-01), Siebol
patent: 4137817 (1979-02-01), Siebol
Copy of p. 21 from a Cherry Fastener Catalog showing the Cherry T Rivet.RTM..

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