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
1995-08-29
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...
411179, 411183, 294322, 295252, F16B 3704, B23P 1100
Patent
active
054454832
ABSTRACT:
A female clinch fastener adapted to be secured to a sheet by cold-forming includes a generally tubular body having 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 tubular body. 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 nut 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 tubular body 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 tubular body.
REFERENCES:
patent: 2026757 (1936-01-01), Swanstrom
patent: 3381362 (1968-05-01), Church et al.
patent: 4018257 (1977-04-01), Jack
patent: 4724610 (1988-02-01), Muller
patent: 4810143 (1989-03-01), Muller
patent: 4825527 (1989-05-01), Ladouceur
patent: 5006025 (1991-04-01), Duran
Emhart Inc.
Murphy E. D.
Wilson Neill R.
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