Connection between a metallic threaded fastener and a part of pl

Details Connection between a metallic threaded fastener and a part of pl Connection between a metallic threaded fastener and a part of pl

1997-11-28

1999-03-23

Saether, Flemming

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Externally threaded fastener element, e.g., bolt, screw, etc.

Pilot end having means enhancing fastening or installation

411301, F16B 2500, F16B 3902

Patent

active

058850422

ABSTRACT:
A connection between a metallic threaded fastener having a threaded portion and a part of plastic material having a bore, the threaded portion forming or tapping a counter thread into the wall of the bore, characterized in that for a predetermined number of threads, the entrance portion of the bore is provided with a circular shaped or arc shaped inclined cam surface which encircles the bore helically and which forms a step between the ends of the cam surface or the associated ends of adjacent cam surfaces, respectively.

REFERENCES:
patent: 447775 (1891-03-01), Higbee
patent: 2908309 (1959-10-01), Brill
patent: 3886989 (1975-06-01), Strange
patent: 4750851 (1988-06-01), Thomey
patent: 5073073 (1991-12-01), Kazino et al.
patent: 5320467 (1994-06-01), Erdes

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