| 摘要 |
PROBLEM TO BE SOLVED: To prevent the stay of filth in a synthetic resin spherical flexible pipe joint. SOLUTION: The flexible pipe joint 1 comprises a spherical outside shell 5 formed integrally with a connection port 4 and a spherical inside shell 3 located on the opposite side and formed integrally with the other connection port 2 having the same linear pipe axis (a). A driven ring 12 is overlapped and put in slide contact with a pair of guide rings 10, 11 which are fixed to the shells 3, 5 at their bases and opposed thereto in disagreement, to form a debris stay preventing flexible ring 9. The flexible ring 9 has a pipe diameter, the same as that of each of the connection ports 2, 4, therefore preventing the stay of filth and avoiding the constriction of a pipe duct when freely changed. COPYRIGHT: (C)2005,JPO&NCIPI
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