Patent attributes
A coupling includes an annular gasket, the annular gasket including at least one sealing surface directed radially inwardly and an outer surface directed radially outwardly; at least one segment, each segment being approximately semi-circular and including at least one inner surface, at least one outer surface, and at least two ends, each segment including a fastener pad protruding proximate to each end, each fastener pad defining a fastener hole, each end including at least one of a tongue and a groove, each tongue protruding circumferentially from at least one end, each groove defined circumferentially in at least one end; and at least one fastener, wherein at least one portion of a shaft portion of the fastener is sized to engage at least one fastener hole in at least one segment.
