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...
Patent
1993-08-23
1996-02-06
Wilson, Neill R.
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...
411107, 411173, 294322, 295241, F16B 3702, F16B 3704, F16B 3900
Patent
active
054891760
ABSTRACT:
A male clinch fastener adapted to be secured to a sheet by cold-forming includes a generally cylindrical head having a threaded shaft extending outwardly therefrom and a plurality of circumferentially distributed splines. Longitudinally extending portions of the splines are adapted to be displaced by cold-forming or a peeling action to form a laterally extending flange along a medial portion of the head. The clinch fastener also preferably includes a laterally extending flange at one end cooperating with the cold-formed flange to secure the fastener within a pilot, or collar, formed at an opening in the sheet to which the clinch bolt is secured. The splines adjacent the end flange are also secured within the pilot of the sheet and prevent rotation of the clinch fastener. The head also preferably has a second end portion being tapered to serve as a guide surface to facilitate alignment with an opening in the sheet during installation, and also serves as a guide surface for beginning the cold-forming, or peeling, of the splines to form the flange in the medial portion of the head.
REFERENCES:
patent: 3381362 (1968-05-01), Church et al.
patent: 3535678 (1970-10-01), Gulistan
patent: 4825527 (1989-05-01), Ladouceur
patent: 4966512 (1990-10-01), Takaku
Emhart Inc.
Murphy E. D.
Wilson Neill R.
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