Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Bulged by axially contracting ends
Patent
1998-06-01
1999-07-06
Wilson, Neill
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Bulged by axially contracting ends
411 55, 411183, F16B 1304, F16B 3704
Patent
active
059190167
ABSTRACT:
A blind fastener system comprises
(a) an outer sleeve (2) comprising a flange (4) at one end, which sleeve (2) is provided with a counterbore (9) at the end adjacent to the flange (4), and a relatively thin wall section (8) which extends from the flange (4) and terminates in an abutment surface (12) and;
(b) an inner sleeve (14) having an inner threaded bore (20), which inner sleeve (14) comprises a head portion (16) which terminates in a shoulder (22) and a second portion (18) extending from the head portion (16) towards the operating side (24) of the fastener (10) and having a relatively thin wall (28), which second portion (18) has a shape which matches the shape of the inner bore of the outer sleeve (2).
The inner and outer sleeves (2,14) are adapted to be assembled together so that the abutment surface (12) of the outer sleeve (2) abuts against the shoulder (22) of the inner sleeve (14).
The flange (4) of the outer sleeve (2) has a plain outer diameter, and sleeve portion (23) having a cross-section which is of such a shape that the outer sleeve (2) is restrained from rotation relative to the workpiece (38) in which it is mounted, is provided between the flange (4) and the relatively thin walled section (8).
The second portion (18) of the inner sleeve (14) is provided on its outer face (32) with a profile (30,40) which engages with the inner face (34) of the wall of the flanged portion (4) of the outer sleeve (2) when the fastener (10) has been set.
REFERENCES:
patent: 2409352 (1946-10-01), Gill
patent: 4007659 (1977-02-01), Stencel
patent: 4036098 (1977-07-01), Schruff
patent: 4875815 (1989-10-01), Phillips, II
patent: 5569005 (1996-10-01), Millington
Armstrong Donald W
Smith Daniel Robin
Emhart Inc.
Murphy Edward D.
Wilson Neill
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