| 摘要 |
1530340 Pipe couplings F I P FORMATURA INIEZIONE POLIMERI SpA 14 Dec 1976 [31 Dec 1975] 52064/76 Heading F2G A radially split clamping ring 1 of synthetic plastics material for insertion in a pipe connecting sleeve comprises a frusto-conical outer surface 2 and an inner surface formed with teeth 3 to penetrate the outer surface of a pipe, one of the teeth being formed on a metal ring 30 housed in an annular step 35 in the ring 1 and effectively embedded within the ring 1 by a locking ring 40 of the same material as the ring 1 and having teeth 41 to penetrate a surface 37 in the ring 1 under the effect of applied pressure, the rings 1, 40 being fused together by ultrasonic welding. Alternatively the metal ring 30 may be arranged within the mould used for forming the ring 1 prior to moulding thereof. |
