Pre-tensioned breakaway fastener

A pre-tensioned breakaway fastener assembly and method for attaching a tooling member to an assembly device. The assembly includes upper (304) and lower (306) annular plate each having a first bore therethrough. A breakaway fastener (302) with a narrowed section (302c) is provided through the first...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Maybee, William J, Dugas, Michael R, Kilibarda, Velibor, Nikesch, Hans
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:	A pre-tensioned breakaway fastener assembly and method for attaching a tooling member to an assembly device. The assembly includes upper (304) and lower (306) annular plate each having a first bore therethrough. A breakaway fastener (302) with a narrowed section (302c) is provided through the first bore in the upper (304) and lower (306) annular plate. A compressible spring member (308), which pretensions the breakaway fastener (302) to fracture on application of a predetermined load, is placed between the upper (304) and lower (306) annular plate. At least one compressive fastener (310), radially spaced from the breakaway fastener (302), is axially positioned through a second bore in one of the upper (304) or lower (306) plate and is removably engagable with the other of the plates to axially compress the spring member (308).