Blind fastener

Details Blind fastener Blind fastener

1989-11-13

1991-01-15

Wilson, Neill R.

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

Having separate expander means

Bulged by axially contracting ends

411 55, 411183, 411908, F16B 1304, F16B 3704

Patent

active

049849468

ABSTRACT:
A blind fastener and method for making such fastener that has a flanged outer sleeve and a flanged inner sleeve that are secured together, wherein the outer sleeve has a socket that receives a lug from the inner sleeve to provide joint axial movement and wherein the outer sleeve has a plurality of slits that receives at least one radial projection from the inner sleeve to prevent rotation between sleeves. The inner sleeve has a thinner upper portion and a thicker lower portion with a score line therebetween to facilitate the separation of this portion. The inner sleeve has a central threaded bore to receive a threaded bolt for fastening purposes and to upset the outer sleeve relative to the flanged portion thereof to secure such fastener to a thin workpiece.

REFERENCES:
patent: 2409352 (1946-10-01), Gill
patent: 2763314 (1956-09-01), Gill
patent: 3030705 (1962-04-01), Gill
patent: 4007659 (1977-02-01), Stencel
patent: 4639175 (1987-01-01), Wellar
patent: 4875815 (1989-10-01), Phillips, II

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