Break-away coupling for highway or roadside appurtenances with enhanced fatigue properties

A break-away coupling is formed of metal and has a central axis and a necked-down central region formed by two inverted truncated cones each having larger and smaller bases. The cones are joined at the smaller bases by a narrowed transition region having an exterior surface formed by a curved surfac...

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Bibliographische Detailangaben
Hauptverfasser:	Stenko, Michael S, Taha, Mahmoud Reda, Dinitz, Arthur M
Format:	Patent
Sprache:	eng
Schlagworte:	ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE BLASTING CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS FRAMES, CASINGS, OR BEDS OF ENGINES OR OTHER MACHINES ORAPPARATUS NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUSPROVIDED FOR ELSEWHERE GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING STANDS OR SUPPORTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A break-away coupling is formed of metal and has a central axis and a necked-down central region formed by two inverted truncated cones each having larger and smaller bases. The cones are joined at the smaller bases by a narrowed transition region having an exterior surface formed by a curved surface of revolution having an inflection point of minimum diameter substantially midway of the coupling along the axis. The cones each define an angle θ1 and θ2, respectively, at each of the larger bases, wherein both θ1 and θ2 are selected to be within the range of 20°-40° and, preferably within the range of 30°-37°.