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
1979-08-10
1981-09-08
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...
264274, 264278, 411308, 411423, 411436, F16B 3712
Patent
active
042881897
ABSTRACT:
A threaded insert and method for making same which is particularly usable when fixedly positioned within a base material which itself is molded about the threaded insert, the threaded insert comprising a generally cylindrical body which is preferably knurled about the exterior thereof to provide a means for fixed securement between the insert and the surrounding base material, the cylindrical body including a central bore extending part way or completely through the insert, the central bore being threaded such that each individual thread includes a burnished end thereof such as to provide an arcuate surface immediately adjacent the mold or immediately adjacent the pin extending through the central bore to prevent the seepage of base material when under pressure during molding past the threads to foul the threads by having base material therein, the dimension of the burnishing on the tips of the threads being of such small dimension that the first placement of a threaded male member into the threaded central bore of the insert will immediately scrape off the burnished edges and thereby assume the normal threaded configuration, the threaded inserts being of either a closed end or open ended configuration which may further include a burnished edge at the uppermost edge of the outer knurled surface to also prevent the seepage of injected base material between this upper edge of the external surface and the head area of the pin.
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Holko Thomas J.
Kane John J.
Sperry Albert
Yardley Products Corp.
Zoda Frederick A.
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