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

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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DINITZ, ARTHUR M, TAHA, MAHMOUD REDA, STENKO, MICHAEL S
Format: Patent
Sprache:chi ; eng
Schlagworte:
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
FIXED CONSTRUCTIONS
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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 [theta]1 and [theta]2, respectively, at each of the larger bases, wherein both [theta]1 and [theta]2 are selected to be within the range of 20 DEG-40 DEG and, preferably within the range of 30 DEG-37 DEG.