DE7025857U - FLEXIBLE PIPE, IN PARTICULAR WATER PIPE. - Google Patents

Description

Applicant: Feiten & Guilleaume Kabelwerke AO 5 Cologne 80 Sehanzenstraße 24

Fl 3887 Cologne-Mülheim, Sem ^. July 1970 Flexible pipe, especially water pipe

The innovation relates to a flexible pipe that is used for forwarding of oases and liquids can serve and in particular intended as a water pipe 1st. The tube is an aluminum tube and has a dense and flexible, layer protecting against aggressive media.

According to the innovation, said tube is formed from sheet aluminum. The seam is closed. Such a pipe can be made of dimensionally stable Sheet metal or strip can be manufactured with small tolerances of the wall thickness and the clear width. The production of Pipes with any wall thickness and diameter can be in any length with considerable speed, so cheap.

702585712.11.70

Pl? 887 July 6, 1970 - 2 -

If the inner wall of the metal pipe is protected against corrosion with a plastic tube, no high demands are placed on the tightness of the seam. For many purposes, In particular, if no high compressive strength is required, the inexpensive folded seam is completely sufficient. Your ability to withstand the stresses caused by the internal pressure in the pipe increases further when the A plastic hose is attached to the outside of the pipe.

Similar considerations lead to the use of the inexpensive adhesive technique in the manufacture of the pipe seam. With it, a good seal of the seam and, in most cases, completely sufficient Strength achieved. With even higher demands on strength a combined gluing and folding process can be used to produce the pipe seam. In special cases, for example in order to be able to use existing devices for the production of pipes according to the invention, the edges of the sheet metal strips used for the pipe formation are first welded together and then be folded.

For reasons of cost, the processes described for the production of pipe seams are mainly used in the production of longitudinal seams use. Under certain circumstances, for example, in order to achieve high compressive strength of the pipe even with a folded seam but the seam also run helically around the pipe. A corresponding Design of the fold would in this case become a guide extremely flexible, hose-like conduit pipe.

The drawing shows the pipes after the innovation,

in fl. 1 a leveling, stepwise set off in Fig. 2 In cross section,

while Flg. 3 shows a further embodiment in cross section.

702585712.11.70

Pl 3887 July 6, 1970

Dae in Pig. The pipe 1 shown in 1 and 2 encloses a plastic hose 2, which acts as a protection against corrosion against the continuing "ed * iss d * *» ■ »♦" - u? D s'lel «*« *! *! «? The seam 7 is produced by folding after the adhesive 8 has been applied to the touching surfaces of the sheet metal strip forming the pipe. The Mußere plastic hose Ji protects the outer wall of the pipe from corrosion and at the same time increases the resistance of the folded seam 7 ·

Pig. 3 shows a tube 1 which is coated with plastic 2 on the inside. The seam is welded at 9 and then folded. The outer plastic jacket J protects the outside of the pipe 1 and the seam from corrosion and prevents the seam from being destroyed by internal pressure.

70258S712.1170

Claims (6)

Pi 3887 July 6, 1970 - 1 - Protection claims: 1. Flexible; ; Aluminum pipe, especially water pipe, that on an inner wall a flexible, dense, against aggressive Has a media-protective layer, characterized in that that it is formed from sheet metal and the seam is closed. 2. Pipe according to claim 1, characterized in that - if the seam is glued and / or folded. 3. Pipe according to claim 1, characterized in that that the seam is welded and folded. 4 _V pipe according to one of Claims 1 to!} »Characterized in that the seam runs as a longitudinal seam. 5. Pipe according to one of claims 1 to 5 »thereby characterized in that the seam runs helically. 702585712.11.70