SCREW

A screw (11) has a shaft (12), a thread (13) which is arranged in at least some areas over the circumference of the shaft (12) and which defines a heli x (14), and cutting bodies (26; 36; 46; 56, 66) made of a material having hardness greater than the hardness of the thread (13) and arranged in rece...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OPPENEIGER, SIMON, HUBER, FRANZ
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A screw (11) has a shaft (12), a thread (13) which is arranged in at least some areas over the circumference of the shaft (12) and which defines a heli x (14), and cutting bodies (26; 36; 46; 56, 66) made of a material having hardness greater than the hardness of the thread (13) and arranged in recesses (20, 2 1) of the thread (13), with the cutting bodies (26; 36; 46; 56, 66) having their longitudinal extension oriented along the helix (14) so that their longitudinal axes (27; 37; 47; 57, 67) enclose an angle (A; B; C; D, E) of -35.degree. to +35.degree. with the respective tangents of the helix (14).