Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Design of fastener or substructure restricts rotation
Patent
1994-11-21
1996-07-09
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Design of fastener or substructure restricts rotation
411427, F16B 3700, F16B 3706
Patent
active
055338500
ABSTRACT:
A welding nut comprising a main cylindrical body having a bearing surface end and an axial screw hole, a flange set around an outer perimeter of the body at the bearing surface end, and axially extending protrusions formed by partially pressed the flange in a direction towards the bearing surface. The protrusions extend axially beyond the bearing surface for resistance welding. At least one groove can be formed in the bearing surface between the screw hole and the protrusions. A guide tube having an external diameter smaller than an external diameter of the body can extend axially from the bearing surface. Screw threads can be bored continuously through the screw hole of the cylindrical body and an inner perimeter of the guide tube. A large number of serrated protrusions can be formed on an outer perimeter of the cylindrical body. Each of the protrusions can have an inner surface slanting radially outwardly and axially away from the bearing surface towards an outer edge of the flange. The protrusions can have equal width and can be formed along an outer edge of the flange on a side thereof adjacent the bearing surface. At least one groove can be formed on a lower end of each of the protrusions.
REFERENCES:
patent: 2385991 (1945-10-01), Huntoon
patent: 2612647 (1952-10-01), Howe
patent: 3045736 (1962-07-01), Howe
patent: 3219790 (1965-11-01), Johnson
patent: 3255798 (1966-06-01), Anderson et al.
patent: 4498825 (1985-02-01), Pamper et al.
Imanishi Kazuo
Ishihara Tsuyoshi
Ishikawa Haruhiko
Sakuragi Hideyori
Nissan Motor Co,. Ltd.
Sannohashi Corporation
Wilson Neill R.
Yorozu Corporation
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