COUPLINGS HAVING STIFFENING RIBS AND KEYS WITH OPPOSITELY DISPOSED CAMMING SURFACES

COUPLINGS HAVING STIFFENING RIBS AND KEYS WITH OPPOSITELY DISPOSED CAMMING SURFACES

Mechanical pipe couplings for joining large diameter pipe elements in end to end relation have arcuate keys which engage circumferential grooves in the pipe elements and radially projecting stiffening ribs aligned with the keys. Key surfaces have angular orientations between 5° and 30°. At the end o...

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Bibliographische Detailangaben
Hauptverfasser: HENRY, VANCE, W, DOLE, DOUGLAS, R, PIERCE, JOHN, W, BIERY, WAYNE, M, MADARA, SCOTT, D
Format: Patent
Sprache:eng
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Zusammenfassung:Mechanical pipe couplings for joining large diameter pipe elements in end to end relation have arcuate keys which engage circumferential grooves in the pipe elements and radially projecting stiffening ribs aligned with the keys. Key surfaces have angular orientations between 5° and 30°. At the end of the keys on opposite sides are camming surfaces which are formed by a thinning of the key. The camming surfaces may be concave, convex, or angularly oriented surfaces and serve to guide the keys into grooves when the keys are not directly aligned with the grooves.