Blind fastener forming a blind head with a large effective area

Details Blind fastener forming a blind head with a large effective area Blind fastener forming a blind head with a large effective area

1988-08-15

1990-02-13

Wilson, Neill R.

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

Having separate expander means

Bulged by axially contracting ends

411 42, 411 43, 411 55, F16B 1304, F16B 1306

Patent

active

049002058

ABSTRACT:
A blind fastener for fastening workpieces of a crushable or composite material and which provides a blind head having a large bearing area against the adjacent blind side of the workpieces and having a main sleeve and an expandable sleeve with the expandable sleeve having a reduced section or secondary portion at its leading end adapted to be severed from the remainder or primary portion of the expandable sleeve at a preselected axial or column load at which buckling has been initiated with the severed reduced section portion being substantially folded or collapsed to form the blind head with a large bearing area.

REFERENCES:
patent: 3277771 (1966-10-01), Reynolds
patent: 3345900 (1967-10-01), Villo
patent: 4033222 (1977-07-01), Wilson
patent: 4142439 (1979-03-01), Landt
patent: 4168650 (1979-09-01), Dahl et al.
patent: 4203346 (1980-05-01), Hall et al.
patent: 4376604 (1983-03-01), Pratt et al.
patent: 4457652 (1984-07-01), Pratt

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