Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Design of fastener or substructure restricts rotation
Reexamination Certificate
2006-09-14
2009-08-04
Estremsky, Gary (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Design of fastener or substructure restricts rotation
C411S174000
Reexamination Certificate
active
07568869
ABSTRACT:
A weld nut has a base panel and a nut. The base panel has a through hole formed therethrough and multiple weld points formed on a bottom thereof. The nut is mounted securely in the through hole in the base panel and has a nut body, a connecting section and a threaded hole. The connecting section is formed on and protrudes axially from the nut body and is mounted securely in the through hole. The threaded hole is formed through the nut body and the connecting section to screw with a bolt. The base panel has a lower carbon content and has an excellent weldability to make the weld points easy to be welded on a workpiece. The nut has a higher carbon content and has an enhanced hardness to prevent deformation resulting from an axial force.
REFERENCES:
patent: 3020987 (1962-02-01), Schaurte
patent: 4676706 (1987-06-01), Inaba
patent: 6692206 (2004-02-01), Clinch et al.
patent: 2003/0063962 (2003-04-01), Nilsen
patent: 2003/0129041 (2003-07-01), Mitts et al.
Estremsky Gary
Kamrath Alan
Kamrath & Associates PA
Sumeeko Industries Co., Ltd.
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