| 摘要 |
A one-piece flexible plastic coupling for connecting a first conduit with a pipe of a second conduit has a central portion in the form of a bellows. The coupling has an end in the form of a cylindrical socket for receiving, an end of the pipe of the second conduit. The cylindrical socket has an inner surface with a diameter greater than an outer diameter of the pipe of the second conduit and an outer surface having a diameter defining a socket wall of predetermined thickness. The socket includes at least one protrusion extending inwardly from the inner surface of the cylindrical socket and extending around the entire circumference thereof. |
