| 摘要 |
PCT No. PCT/NL93/00197 Sec. 371 Date May 25, 1995 Sec. 102(e) Date May 25, 1995 PCT Filed Oct. 7, 1993 PCT Pub. No. WO94/09225 PCT Pub. Date Apr. 28, 1994A process for fabricating an outflow element for the drainage of rain-water containing a lead plate having a hole and an aluminum outlet pipe having an end sealingly affixed in the hole, whereby the end of the outlet pipe contains a plurality of bulges and the plate has a collar at the hole, which, with the aid of a clamping tube contacting the end of the pipe in question, keeps the collar in pressing contact with the bulges. The other end of the clamping tube is equipped with an external circumferential groove, within which an O-ring is to be applied to facilitate sealing with drainage pipes to be connected thereto. The fabrication process uses a widening tool to deform the collar and press the clamping tube into the end of the pipe. Alternatively, the fabrication can also occur by bringing the clamping tube into the collar and subsequently stretching the diameter of the clamping tube so that the clamping tube pushes the collar into the bulge. |
