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
1983-05-06
1985-06-04
Holko, Thomas J.
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...
411 15, 411 61, 411908, F16B 1306
Patent
active
045211485
ABSTRACT:
A plastic fastener for panels comprises in combination a main body of the shape of an angular pillar provided at the upper end thereof with a flange, elastic tongues formed one each on one of the two pairs of opposed side walls of the main body and extended from the lower side of the flange and slanted downwardly toward the interior of the main body, and fitting means formed one each on the other pair of side walls as bulged outwardly, with the aforementioned elastic tongues provided at the lower ends thereof with grips having threads incised therein. With this plastic fastener, union of a supporting panel and a supported panel is accomplished by inserting the main body into a hole bored in advance in the supporting panel until the flange thereof comes into tight contact with the supported panel and depressing a screw past the supported panel into the main body thereby causing the threads on the grips to come into fast engagement with the threads on the screw. If the screw happens to be exposed to a force tending to expel the screw out of the panel, since the elastic tongues are inwardly slanted downwardly from the lower side of the flange, the resultant force has an effect of enhancing the squeeze of the grips on the screw.
REFERENCES:
patent: 2430555 (1947-11-01), Burke
patent: 3756116 (1973-09-01), Schuplin
patent: 3869958 (1975-03-01), Murayama
patent: 4133246 (1979-01-01), Small
patent: 4208944 (1980-06-01), Moryl
patent: 4284378 (1981-08-01), Mizusawa
Buckman T. W.
Halvorsen J. R.
Holko Thomas J.
Nifco Inc.
Wilson Neill
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