| 摘要 |
A coupling assembly for joining two spaced coaxial pipe ends comprises an elongate sleeve adapted to receive coaxially two opposing pipe ends to be connected. The sleeve has frusto-conical ends opening outwardly and receiving a pair of annular elastomeric gaskets adapted to fit into the frusto-conical ends of the sleeve in sliding engagement around the pipe ends to be connected. A separate retaining ring member is located axially outward of each end of the sleeve to encircle the pipe ends to be connected. Each retaining ring member has a frusto-conical inner wall facing the sleeve to define a gripping ring chamber. Positioned in each gripping ring chamber is a separate radially compressible gripping ring member. Separate engagement ring members are located at each end of the sleeve at a location between the elastomeric gasket and the gripping ring at that respective end. Tie rod members are provided for selectively moving the retaining ring members axially toward one another to compress the gaskets into their respective frusto-conical chambers of the sleeve and to radially compress the respective gripping ring members. And, cooperating stop surfaces act to limit movement of the retaining ring members toward one another to provide positive limit to the compression applied to the gaskets and the gripping ring members.
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