DE1703940U - CONNECTION JOINT FOR PLASTIC PIPES. - Google Patents

Description

Call 54138

237 Gm 55/73 Sw

Pirma Rheinisches Metallwessk $ .m.b.H. , JLrmatureiifäbrik, Metal and Elsengiesserei, Torz near Cologne

Connection for plastic pipes.

In recent times, plastic pipes are more unö more for Installation purposes because they are sufficiently resistant to medium pressures, absolutely corrosion-proof «and can be easily deformed when heated, whereby their "laying can be carried out much more easily than that of metal pipes. For connecting such pipes to one another or with fittings, cone clamp connections are mostly used. However, this is allowed within the clamping zone Plastic pipes are neither widened too much, otherwise overstressing in the material, e.g. cracks, will occur * the cone may still be too slim, as the tube will otherwise slide out easily when it is screwed or under the effect of internal pressure. The usage of Roughening or the like leads to surface damage when screwing, which complicate the seal.

The subject of inflation is special training the clamping bushing onto which the union nut is screwed, with the rest of the normal training of the Counter cone and thre union nut * The clamping bush is

in the

Rhein.-Westf. Bank, Cologne · Postal checking account: Cologne 152251 - wire address "Inventator" Telephone agreements only become binding once they have been confirmed in writing.

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inside, "except for the front, conically widened Part, cylindrical in shape and carries on its inside Groove-like indentations whose planks facing the cone are perpendicular to the surface, while the rear planks run flat towards the other end of the socket from which the plastic pipe in j the socket is pushed in »at the rear, well-rounded

At the end of the socket, the socket has the usual hexagon

. Putting on the wrench «Bas front end of the

j socket is slotted three or more times and its outside

The thread is slightly conical. Formed «The inside diameter the socket is chosen so that it can be pushed over the plastic pipe with moderate force until it protrudes a few mm in front. By the subsequent placement on the mating cone and tightening the union nut ■ the plastic pipe is in the manner of a chuck from de; The slotted part of the bushing is firmly gripped and tightly attached to the mating cone, which is located inside the pipe pressed on * A receding of the pipe when tightening the screw connection is caused by the groove-like screwing prevents your steep planks from being pressed slightly into the surface of the pipe.

The special design of the socket enables an absolutely tight connection while protecting the surface as much as possible of the plastic pipe. Such a connection can be used as a pipe coupling, as a connection to fittings, as a branch or be used *

In the drawing is an embodiment of the .New

in longitudinal section through the connection of a plastic pipe shown with a screw nipple,

"The clamping bush 3 is pushed over the plastic tube 2. Its front part, which is provided with the slightly conical thread 4, is provided with four slots 5 through which the ripening effect is achieved * Following the cone 6 in the gate part of the clamping bush." 3 _# which works together with the mating cone 8, there are the screwed-in clamping grooves 7, the profile of which is designed with a steep front flank, but: slightly inclined back flank, "For easy insertion of the plastic tube into the socket, its rear end is well rounded at 9"

Protection claims

Claims (2)

Protection claims; 1) Connection connection for plastic pipes, using one that can be pulled into the plastic pipe
Konusnippeis with collar, against which a union nut is supported, characterized by a slidable socket with conical! External thread that engages in the thread of the union nut 2) connection connection according to claim 1 _f thereby
marked that inside the socket, the front end of which forms the mating cone to the zonus nipple, there are clamping grooves "whose planks facing the cone are steep, but their back flanks fall flat" Approx.