Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Nut – and means to engage substructure on its opposite faces...
Reexamination Certificate
2008-05-20
2008-05-20
Saether, Flemming (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Nut, and means to engage substructure on its opposite faces...
C711S118000, C711S118000
Reexamination Certificate
active
07374382
ABSTRACT:
A captive clinch nut may be rotatably attached to an apertured sheet. The nut includes a body having an axial threaded bore and a flange forming a base of the nut body. The flange includes a surface on a bottom side thereof preferably unitary therewith for providing a bearing surface of reduced friction against the sheet. A displacer unitary with the nut body is located directly below the flange and has an outside diameter less than an outside diameter of the flange. A tubular flared shank unitary with the nut body extends coaxially from the displacer, and includes a neck immediately adjacent the displacer with an outside diameter less than the outside diameter of the displacer forming an undercut area between the outside of the shank and an underside of the displacer for receiving the cold flow of metal of the sheet.
REFERENCES:
patent: 3000420 (1961-09-01), Spokes
patent: 3238581 (1966-03-01), Sawyer
patent: 4370794 (1983-02-01), Bien et al.
patent: 4969788 (1990-11-01), Goiny
patent: 5431517 (1995-07-01), Hoelle et al.
patent: 5842894 (1998-12-01), Mehlberg
patent: 5975821 (1999-11-01), Kue
patent: 6220801 (2001-04-01), Lin
patent: 6486402 (2002-11-01), Harger et al.
patent: 6817815 (2004-11-01), Ross
patent: 6866456 (2005-03-01), Bentrim
patent: 6932044 (2005-08-01), Fenech
PEM Management, Inc.
Saether Flemming
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