Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Frangible member
Patent
1990-03-05
1991-04-09
Smith, Gary L.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Frangible member
411 70, F16B 1306
Patent
active
050060244
ABSTRACT:
A fastener having an assembly comprising a sleeve and pin for telescoping movement therein useful for clamping together a plurality of work pieces has two mechanical locking structures for locking the pin and sleeve together. One locking mechanism comprises material contained in a reduced diameter section of the sleeve which is formed into a first locking groove of the pin as a result of pulling the pin into the sleeve. A second lock comprises a locking crown formed in the sleeve head which is formed into a second locking groove in the pin by means of increased pulling pressure applied by the setting tool against the locking crown after pin movement has stopped. The design of the pin head is such that a clamping of the work pieces occurs prior to expansion of the sleeve in the apertures of the work pieces and prior to setting the double locks of the pin to the sleeve.
REFERENCES:
patent: 2526235 (1950-10-01), Huck
patent: 3657957 (1972-04-01), Siebol
patent: 4137817 (1979-02-01), Siebol
patent: 4405273 (1983-09-01), Ruhl et al.
patent: 4473914 (1984-10-01), Haft
patent: 4765787 (1988-08-01), Briles
patent: 4781501 (1988-11-01), Jeal et al.
patent: 4810142 (1989-03-01), Briles
patent: 4863325 (1989-09-01), Smith
patent: 4907922 (1990-03-01), Jeal et al.
Redman Jerry
Smith Gary L.
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