Fixing member with a recess at the end of its threaded shank

The fastener has a threaded end (10) whose face (12) contains a recess (14) into which a tool for tightening the fastener is inserted. The recess has a periphery (18) in the shape of a curved line forming three or more lobes. The ratio of the maximum distance from this line to the edge of the face a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	FAUCHET, CHRISTIAN ROGER JACQUES
Format:	Patent
Sprache:	eng ; fre ; ger
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:	The fastener has a threaded end (10) whose face (12) contains a recess (14) into which a tool for tightening the fastener is inserted. The recess has a periphery (18) in the shape of a curved line forming three or more lobes. The ratio of the maximum distance from this line to the edge of the face and the corresponding minimum distance is 1.25 - 1.75.