DE1650055A1 - Branch pipe piece - Google Patents

Description

PAT EN T AN WÄ L T E / Dipl.-lng., M ARTI N LI CHT

Dr. R El N H O LD SCH Ml DT

8MDNCHENZ-THERESlENSTRASSEaS

Dipl.-Wirtsch.-Ing. AX L H A N S M A N N Dipl.-Phys. SEBASTIAN HERRMANN

P 16 50 055.3 1 «2 1Q70

Munich, ^lb · «4.19 70

Kennedy Valve Mfg. Co., Inc. your mark our mark Ho / Ca

NEW DOCUMENTS FOR DISCLOSURE

description

Branch pipe stucco.

The invention relates to improvements in branch pipe sections or secondary lines using branch pipe stubs.

In particular, the invention relates to branch pipe sections, which wejrjfenjcännen quickly installed, and by which exceptionally high pressures taken up— can be after the branch pipe is inserted into a main line and fixed there.

—2—

20981S / 0227 New saucers

Patent attorneys Dipl.-Ing. Martin Licht, Dipl.-Wirtsch.-Ing> Axel Hansmann, Dipl.-Phys- Sebastian Herrmann

8 MÖNCHEN 2, THERESIENSTRASSE 33 · Telephone 281202 · Telearamm-Adreiie: Lipatli / Munich Bayer. Vereinsbank MOndien, Zweigit Oikar-Von-Miller-Rina, Kfo.-Nr. 882495 · Posfscheck-Konfo: MOhchen No. 163397

Oppenauer BOrot PATENT ADVOCATE DR. REiNHOLD SCHMIDT

If a Branch line is to be attached and when removing an entire section to a to attach a common T-connection is not possible or is practically feasible, tapping or branching sleeves are used. Usually orders one such a sleeve from two solid sleeve halves, which are clamped together around the main line and which an area with a suitable sealing ring seal the pipe in which the branch opening is attached. This opening is then through the line tion wall, congruent with one of the connection halves, drilled. The reason why branch sleeves are used is that the main line is already working and pressurized medium, wherein it is not possible the line section to which the Junction is to be attached, to isolate and to emptying »If you have a valve on the branch socket attaches with certain fastenings, then that can Cutting tool completely enclosed in the junction sleeve can drill the hole and can out taken out of the junction and removed from the valve without affecting the pressure in the line and without letting the medium flowing in the main line escape, These valves and the appropriate fixings are already known and form not part of the present invention.

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These connections are commonly called "threaded ^{bushings 11} " because the passage of the upper half of the bushing is internally threaded at its end which is screwed or screwed into the external threads on my branch lines. the branch line is designed in the form of a bell connection. ”However, all these connections are usually referred to as detachment or tapping joints.

Branch pipes of known embodiments are difficult to install, particularly those in which the area of the branch opening is sealed by completely sealing the conduit at the upstream and downstream ends of the opening. These seals are made either by pouring molten lead into specific grooves in the can halves, or by capping slotted sealing rings against the conduit. In both cases, installation is difficult and time consuming. Even the embodiments of the bushes, in which a single sealing body is wrapped around the branch opening, show installation problems, particularly where the branch opening same Qffnungegröß · or nearly the same size vie * has the line, since the force components which

2098 TS / 0227

compress this sealing body at the low points of the branch opening are very small, even if the outer pipe diameter is the ideal value. The usual dimensions of the diameter can make these force components even smaller, the present invention creates a seal which can be used more easily in bushings of the last-mentioned embodiment, wherein a Sleeve of certain size can be used for a wide range of line diameters.

In all known junction bushes, by cutting the junction opening of the Line section, which extends from there around the circumference of the line, weakened. The larger the branch opening, the greater the weakening, and if so the diameter of the branch opening is so large or is almost as large as the inner diameter of the pipe itself, so much is removed from the pipe wall. cut that without the use of special cans only pressures can be handled which are considerable are lower than those conduction pressure, which in the Lines exist before the opening is cut or when an ordinary T-connector is used »

Such a special measure consists only in the use of the aforementioned Büchsen- ^ Embodiment in which the two sleeve halves work together to make multiple

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Support seals. Since these seals are the Line completely surrounded on the opposite side of the branch opening and there are further seals between the two bushing halves themselves are provided, in this way becomes a chamber formed, which perfectly the outside of the weakened Surrounding line section. The line pressure can enter this chamber and can both on the outside as well as on the inside each Act on the pipe section «This means that the Pressure forces on this weakened line section mutually balanced so that the line in can withstand substantially the same pressure as was possible / before drilling the branch opening. Despite this advantageous feature, it is difficult to Install bushings with multiple seals, as through the complex arrangement of the individual components can only be avoided with difficulty can.

With the other versions of the cans must be the continuous one surrounding the branch opening Sealing body completely in the upper half of the sleeve be supported. The pressure therefore only acts from the inside on certain areas of the weakened section Above the seal, the weakened section is exposed to considerable, unbalanced compressive forces.

The geometric arrangement of the discontinuous Line wall is extremely disadvantageous for handling unequal

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16500S5

or unbalanced forces, creating strong Stress loads, especially at the high points of the branch openings, come to light.

In the case of known type of bushings this state of tension was exacerbated by the fact that the areas of the weakened part, which are located outside the seal (and on which only the internal pressure acts), essential areas— Have areas which are opposite the upper half of the socket as well as by the fact that the entire surface area of the lower sleeve half is opposite. The present invention improves significantly Junction bushes of this embodiment, in which the sealing body is stored so that the areas of the weakened part, which are exposed to the internal pressure, are relatively smaller than before. The compressive forces acting on the weakened section are thus kept to a minimum, whereby the conduit can withstand considerably higher pressures than heretofore possible with known embodiments was.

The most preferred embodiment of the The present invention is constructed so that the sealing body extends around the circumference of each high point of the Branch opening on both sides of the weakened Section extends downward approximately to the edge of the upper socket half, from where the sealing body

2098 15/027

in the longitudinal direction across this section runs. This sealing arrangement is common when viewed along the axis of the branch opening at right angles and the areas of the weakened section on which only internal pressure is exerted are limited to those parts that are not covered by the upper half of the bushing.

The sealing body is pressed against the outer surface of the conduit by a slight movement of the upper sleeve half along the axis of the branch opening, for example by the two Bushing halves with the help of nut and bolt arrangements be contracted. The component of this movement which is perpendicular to the outer surface of the Line stands and is therefore useful for compressing the sealing body is widest Part of the line very small. Consequently, on export ungsformen known type tries to avoid leakage losses should be avoided by placing the sealing body as close as possible to the branch opening. With the present invention, however, is an arrangement provided, in which the largest possible part of the sealing body at a certain distance comes to be below the level of the low points of the opening.

To a large extent, this novel arrangement of the sealing body can be achieved by a special retaining wall for the sealing body in the upper sleeve half.

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. "- 8 ■■ - - ■■■ ^/;;.

Due to the special shape of these ¥ and edges, which run at certain points of the upper sleeve half and which represent additional features of this invention, the longitudinally extending web parts of the sealing body are compressed and supported in an unusually effective manner. During the contraction of the two sleeve halves galling of the sealing body is prevented, wherein W is a continuous sealing portion then obtained even when the longitudinally extending web portions of the seal body are located above the -Mitterebene the line.

In practice, this includes both the outside diameter of the lines and the round shape of the lines subject to considerable variations, while the dimensions of the cast, upper sleeve halves are less major changes are subject to ^ for example many cast iron pipes for urban water and gas connections, for which junction boxes were made are manufactured at a point in time at which the outer diameter of these lines is less than the nominal diameter diameter of the cables in use today differed significantly. It is therefore of considerable benefit to have a Tapping or branching bushes of a certain size to have available, which are used for all cables of the currently used nominal size can. The novel edge surfaces of the present invention make it possible to use a branch socket.

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certain size a seal near the median plane to achieve despite this line spread.

Even if the branch opening is considerably smaller than the inner diameter of the pipe, whereby the weakening of the line is less pronounced, the best results are achieved if one the longitudinal webs of the sealing body so close to the central plane as possible and & abei as large as possible Area of the weakened section cross-covered. As in embodiments in which the branch> line and the main line have the same diameter, in this way the largest possible Proportion of the weakened management branch to the outside Subjected to pressure, which increases the force on this section, caused by the pressure only acting on the remaining area, is reduced to a minimum.

The web parts of the sealing body that run around the circumference are preferably guided as close as possible to the high points of the branch opening. Although it seems beneficial after the novel Arrangement at the weakened part of the main line the external pressure on areas of continuous Allowing line sections to act on both sides of the branch opening is the one achieved thereby Profit more than offset by the deformation of the adjacent, continuous line sections by means of the non-uniform voltage

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charges. Therefore, for each area there is a continuous borrowed portion, which is enclosed by the seal, a corresponding area on the circumference, which only the Is exposed to internal pressure. As a result, the compressive forces on the continuous sections are in the sense unevenly, that they are only partially around the pipe circumference take effect when the webs running around the circumference part lengthways at a distance from the high points the branch opening. It is within the meaning of the present invention, the abduction body in a ge-P know how to keep the longitudinal distance from the high points of the branch opening, as long as this distance is later remains limited to descriptive way.

The deformation of the conduit is further reduced and the stresses on the weakened portion of the conduit are further reduced according to the present invention by means of cooperation of the above-described novel sealing arrangement with a novel, lower sleeve half. Because of the size dispersion of the line and the Abzweigungsbüchse the lower half box portion must be so located that they even fit to the "line at a _k possible bad combination of lead and tin. The difference resulting from this in most cases loose fit is undesirable because characterized it is avoided that the lower half of the sleeve rests against the sides of the line in order to prevent their deformation.

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It was discovered according to the invention that this loose fit can be overcome and that the bulging of the pipe sides can be reduced, if inan the inner surface of the lower half of the sleeve covered with an elastic pad of suitable thickness; This is especially true when you look at the edges— area of this area in the-Nahe * -der-median plane of the Line occupied and by clamping these pads between the line and this edge area.

Clamping the two sleeve halves creates this clamping effect of the pad. If branch lines use of the bell embodiment find, then the use of a sealing body, which surrounds a larger area than that of the branch line, the unexpected, additional advantage that with the help of the line pressure an additional, / - considerable Clamping effect is achieved. It is assumed that the upper half of the sleeve by none additional arrangement besides the main line is carried. This is the case when the branch box is clamped around the main pipe when the branch hole has been cut into the main pipe, and when the cutting tool is removed and the usual valve mounted on the upper half of the sleeve, However, no branch line has yet been connected, the inner, both to the upper half of the sleeve and the Effective valve pressure covers an area which is at least as large as the branch opening, whereby the connection half and the valve

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from. the line along the branch axis - be moved. The lower half of the sleeve is therefore pressed firmly against the underside of the pipe by the compressive forces, with the sides of the lower Bushing half the elastic pad on the line jam. . . ■,

On the other hand, the branch line, which will be attached later, consists of the embodiment of FIG Bell connection so that the valve and the bushing have no support for those on the branch line form effective compressive forces, which have the tendency to axially in the branch line from the main line facing away to move. This force on the branch line corresponds to the surface area enclosed by the outer diameter multiplied with the pressure. Movement of the branch line must therefore be avoided by a different arrangement for example by attaching the branch line to support frames or in the ground is buried. Where the branch line is big and where the sealing body is close in a known manner is located at the edge of the branch opening, is the upper, enclosed surface area of the terminal the same area as the area— area, which is determined by the outer diameter of the branch line is included. As a result, in the known cases, there was no considerable force which would hold the moved the upper half of the sleeve away from the line. To

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BAD OBIGINA ».

of the present invention, however, is that by sealing enclosed planar area is considerably larger than that provided by the outer diameter of the branch pipe enclosed area. Due to the difference in the surface area there is a considerable force which the upper half of the sleeve of moved away from the line and therefore the lower bushing— half pulls the line in the desired manner. The clamping effect of the elastic cushions is therefore ensured in all situations.

Even when using the elastic pads on the inner surface of the lower half of the sleeve and when using the line pressure to pull the lower half of the liner against the line in all situations, will not bulge the pipe sides effectively prevented when the lower half of the sleeve is not rigid enough. It is an essential feature of the present invention that the midrange lower sleeve half with respect to the outer surface area rich, on which the elastic cushions rest, is cut out considerably. Preferably is this section at least as big as the thickness the lower half of the liner measured against the outer Areas.

In the preferably illustrated embodiment of the Invention becomes the right-angled sealing body like him has been described, used as with this one the greatest

209815/0227

Surface of the weakened line section is enclosed. Understandably, however, the exact shape of the sealing body is not of essential. The advantages of the present Invention are achieved when the sealing interface diverges outward from the opening when the sealing body moves away from the Ilochpunkte extends laterally. Such a divergence does it possible that the sealing boundary surrounds a larger part of the outer pipe surface area, than was previously the case. This surface area is limited by the branch opening through which Center plane «and through the peripheral parts of the seal that run tangentially to the Ilochpunkte of the opening.

The invention will become apparent with reference to the accompanying drawings described?

209815/0227 bathroom original

Fig. 1. is a side view of a built-in junction box according to the invention. These Bushing, provides a branch connection represents, the inside diameter of which corresponds to the inside diameter of the main line;

Fig. 2 is a side sectional view of the junction box of Fig. 1 showing the Arrangement of the sealing body, the branch opening and the branch passage are shown;

Figure 3 is a sectional view of the assembly of Figures 1 and 2 taken from line 3-3 in Figure 1;

Fig.> I is a plan view of the arrangement of line 4-4 in FIG. 1;

Fig. 5 is a plan view of the upper half of the sleeve with the branch passage and the surfaces for holding the sealing body are shown;

Figure 6 is a perspective view of the seal body alone, showing the position in which it rests against the surfaces of the upper half of the sleeve;

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-16 - ■ ■■■ ':. ■ ^: ":'. - ■ - ■ ..

Flg. Figure 7 is a top plan view of the lower sleeve half;

Fig. 8 is a perspective view of the lower sleeve r * half, with an elastic pad in its normal position is shown, while the other cushion in distant from the normal position Position, can be seen;

Fig. 9 is a view similar to Fig. 2 showing an arrangement in which the branch opening has a diameter which is considerably smaller than that Main pipe inner diameter;

FIG. 10 is a view similar to FIG. 9, showing a sealing body / its, web parts running around the circumference at a distance from the high points of the branch opening lie and extend from there in a curve in web parts extending in the longitudinal direction;

Fig. 11 is another view similar to Fig. 9; in which web parts extending in the longitudinal direction are shown, which in a closer distance below the low points of the branch opening;

09815/02 27

Fig. 12 is another view similar to Fig. 9, in which a non-rectangular abdominal body is provided, of which the circumference and extending in the longitudinal direction Web parts are curved in a curve, and at the high points of the branch opening merge.

Fig. 13 is a view similar to Fig. 3, on an enlarged scale, in which the position of the parts is shown when the outside diameter the main line is relatively large;

Fig. 1k is a view similar to Fig. 13, showing the position of the parts when the outside diameter of the main conduit is relatively small;

15 is a perspective view of the upper half of the liner; in which the surfaces supporting the sealing body are shown;

Fig. 16 is a view similar to Fig. 3, in which the liner and valve assembly shown is before a branch line is connected;

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Pig. l6a is a diagrammatic perspective view the projections of the area of the branch opening, of the area, which is surrounded by the sealing body and the surface area which is enclosed by the outer diameter of the branch pipe; the projection lies in a plane perpendicular to the axis of the branch;

FIG. 17 is a view similar to FIG which shows the liner and valve assembly after a branch line was connected;

Fig. 18 is a perspective view showing a half of a core box and that therein Kernes are shown; these greeting parts can be used for casting the special, the sealing body retaining surfaces are used in the upper half of the sleeve;

FIG. 19 is a view similar to FIG. 13, in FIG which a junction according to the invention Bushing is shown in which the branch passage is smaller than the inside diameter of the main pipe;

9815/0227

Fig. 20 is a view similar to Fig. 5, but related to the embodiment according to Fig. 19;

Fig. 21 is a view similar to Fig. 19;

however, the use of a further embodiment of the sealing body is shown;

Fig. 22 is a view of Fig. 20, but on related to the embodiment of Fig. 21;

Figure 23 is a view similar to Figure 21, wherein however, the branch passage of the upper sleeve half towards its outer end is reduced; and -

FIG. 24 is a view similar to FIG. 22 with respect to FIG the embodiment according to Fig. 23

209815/0227

In the drawings, a certain section of a line OK is shown in FIGS. A junction with the aid of the junction box according to the invention is arranged on the tube or line 10. This sleeve consists of two separate metal housing halves 12 and 14, each with a support or saddle part 16, 18. The support part of the bushing is curved, surrounds one half of the conduit and is provided with radially extending flanges 20, 22 opposite one another. With the aid of nut and bolt arrangements 24, the two flange halves are drawn towards one another against the line. The upper liner half 12 is also provided with a hollow, one-piece and cylindrical part 26 which extends radially upwards from an opening 27 in the support part and forms a passage 32 for the flow. The axis 34 of this passage is perpendicular to the axis 36 of the conduit. Outer reinforcement struts 37 on parts i6 and 26 give the upper half of the sleeve additional strength. A normal conduit flange 38 at the upper end of the part 26 provides the connection for the valve 40 which is normally used for these systems. In this embodiment of the invention, the inner diameter of the passage 32 is somewhat larger than the inner diameter of the line OK.

In Fig. 2, the circular branch line 42 is shown, which was cut into the line OK and corresponds to the inner diameter of the line. Of

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Furthermore, the shape of the elastic sealing body is shown, which rests against a surface 46 of the saddle body and which by the clamping action of the upper and lower sleeve halves somewhat against the outer surface of the Line is pressed. The surface 46 is slightly incised with respect to the surface 47 surrounding it, with With the help of a connecting wall 4TaJ which body carries, it is avoided that it is displaced outwards by the pressure of the medium. With this out- The embodiment of the invention is the sealing body 44 endless, of cylindrical shape and solid. It acts like a U-sealing ring in that it is affected by the pressure of the Medium is pressed against the wall 47a and the sealing effect between the upper half of the sleeve and the line reinforced. ■

The line along the sealing body where the Do not attack the pressure of the medium on the upper half of the housing can, usually referred to as a sealing limit, is usually located near the inside edge of the Sealing body. The sealing body is preferably made of rubber or a rubber-like material with a Hardness (Share A) made from about 75 to 80.

Close to the edge of the branch opening or immediately besides, the sealing body according to FIGS. 1 to 8 has a pair webs or web parts 48 extending around the circumference, through which the sealing boundary areas in parallel planes

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50 · These run perpendicular to the axis 36 of the line and as close as possible to the tip points 52 the opposite sides of the opening 42. When the sealing body is pressed together by the clamping action of the two housing halves surrounding the line, will be circular cross-section somewhat flattened so that the sealing edge through the points P1 and P2 on the surface 46 runs near the edge of the opening 27. From these points the leg parts extending over the circumference extend down along the opposite sides of the

™ Line up to a height which lies somewhat below a middle level (Fig. 3). This plane runs in the axis 36 of the line and is perpendicular to the axis 34 of the junction. At this level, the leg or _{web parts 48 border in web parts 56 S} which extend in the longitudinal direction, with which they form rounded 90 ° corners. Although these longitudinal ridges are necessarily above the central plane 54, the sealing boundary through points Q1 and Q2 extends well below the "low *" points 60 of the branch opening. Preferably, the sealing body 44 is pressed or cast in a rectangular shape lying in one plane from this shape, it can easily be turned into its end position during installation.

k be arch. The fora which the sealing body takes up, is shown in FIG. 6. Preforming the rounded corners allows them to be made a little sharper than it is would be possible if the sealing body of circular shape were reshaped into the edge shape during installation

BAOORtGlNAu

209015/0227

In Fig. 3 it is shown that the branch wall edges 62 run parallel to the axis, 34. These wall edges or Walls are cut with a cutting tool (not shown) manufactured, which rotated around this axis and directed towards the line is moved forward. Even where the branch pipe is the same size as the pipe 10, forms the intersection of these walls 62 with the outer conduit surface has considerable areas between the branch low points 60 and middle level 54.

The forces acting on the weakened part of the line (forces which are only caused by the internal pressure are kept to a minimum when the Sealing arrangement described above is used. The sealing body is particularly suitable for the To continue pulling the lower half of the sleeve against the line, after the usual branch line in the Fig. 17 was attached in the manner shown. This is particular of importance when you keep in mind that with embodiments known type no train on the lower half of the liner was derived from the compressive force after the Branch line has been attached. Indeed, there was an undesirable impact force in many of the known embodiments dex upper half of the housing against the main line. As can be seen from Fig. 16, the junction boxes are and the valve assembly attached to the main line so that the bell junction 64 of the valve only through one Plate 66 is covered. For town gas and town water

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▼ • rhaltnie ·· «shares the use of such a platform • in known · procedures, if a secondary line branching off from the main line will in the future be connected to a The best point should be present, but if the Secondary line is initially not required. In the meantime, the junction bUcb.se, the Valve 40 and plate 66 through their bolt connection with each other and uv the line 10 against the line

fe pressure secured. Accordingly, for this arrangement no additional support required. The lower half of the housing is lightly against the underside of the pipe 10 is attracted with a force equal to the line pressure times the square of the area A1 (Fig. 16a) corresponds to »This Area Al represents the projection on the plane 54a the upper half of the liner, which is surrounded by the sealing boundary area. The plane 54a can be any plane perpendicular to the branch axis 34 Be level. The surface area Al is always larger al · the projected surface area A2 of the branch opening. In embodiments of a known type, this was However, the surface area is never significantly larger. at

W sealing devices of a known type, however, were the

projected surface area A3 of the valve-bell connection 64 is substantially larger than the surface area A2 and thus greater than the surface area Al.

Before the branch line is connected the ratio of the surface areas Al to A3 is unimportant. Of the

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BAD ORIGINAL

Pressure acts on the surface area of the "arrangement, which is at least as big as A2. This creates a sufficient force released to hold the lower rifle to attract against the line. The one on the plate 66 acting pressure, which by the difference from A3 to Al is greater, is increased by the force. lifted some on the upper half of the sleeve onto the same Area difference, but in the opposite direction, is exercised. In Flg. 17 is shown, however, why ", after the plate 66 has been removed and the junction "- line 68 was connected, it was a disadvantage a surface area of A? to have whichever bigger is el »Ai *

The pressure acting on the surface area A3 acts onto the branch line and presses it into a Direction parallel to the branch axis 34 from the main line away. Because of the structure of the bell or Sleeve connection 64, the valve 40 can not use this pressure counteracting supporting force on the branch line exercise · A different arrangement must therefore be made for these purposes. For example, will 17 shows the branch line through the ground 70 secured against movement. The pressure exerted over the surface area A3 is therefore not exercised longer on the lower sleeve half 14.

The relative sizes of the areas Al and A3 are now important. 16, 16a and 17 show that when the Sealing body 44 at all points so close to the

209815/0227

Zweigungsöffnüng is, as is the case with the low points it is the case that the resulting, circular surface area enclosed by the sealing body would actually be smaller than A3. after the Branch line would be connected to the Pressure on the upper half of the sleeve 12 in the direction of the line 10 and not facing away from it. This would in fact oil the clamping effect of the lower

Loosen the housing half against the underside of the pipe.

The effect of this differential pressure is only desirable if it supports the pressing of the sealing body 4% on the line 10. The opposite is true, however. The sealing body requires very little pressure in order to achieve a tight seal. Bias is easily made possible by the bolt and nut arrangement 24. Any excessive adjustment pressure on the sealing body, which could be produced if the pressure were to take effect even on a small difference in the area A3 across the area A1, would squeeze the sealing body together, so that the surface 47 of the upper sleeve half in contact with the

h high points baw. pointed points 32 of the main line would arrive. On the other hand, the forces required to support the expanding tube sides, by which the lower sleeve half is drawn against the surface area of the main line, cannot be too great. Therefore, if the area Al is larger than the area. rich A3 »then there is the force acting on the upper half of the bushing,

209815/0227 bathroom 'original-'

which by the exerted on this area difference Pressure is generated, no counterforce of the soil 70 counter, so that. the, upper sleeve half in of of the line.IO is pressed in the opposite direction along the junction axis. This allows the sides of the lower half of the sleeve to seal the line so tightly enclose as possible. If they exactly encircle the tube, then they prevent it from being directed outwards Bulging of the pipe sides »

Referring to Fig. 8, there is shown a feature of the present invention shown, through which the lower sleeve half dear Can counteract bulging of the conduit even if the conduit is relatively too small. Because of the Differences ie the outside diameter of the lines which the junction sockets bsw. Socket connections are to be attached, the lower half of the canister must be large enough to encompass a pipe with the largest diameter. Consequently, the lower sleeve halves fit loosely around all other conduit sections of this size, according to the invention resilient pads 72 made of Guswi or guaw-like material on the outer surface areas 71 of the lower sleeve. The thickness of each this cushion corresponds to aahesu des rltigfttrMigcu lau « You can see the inside diameter of the lower pocket and the NoMinal air flow through it Most of the time, the upholstery is softened in the face and is more or less Southeast Asian, what ever after deviation of the endurance mescer from the NoMinal the respective line abhäagt * A Selehe KIeMM-

«28 -

Effect is first achieved by the bolt and nut arrangement 2k and later by the pressure that acts on the differential area of Al and A3. Preferably the pads do not cover the area at the centerline of the lower sleeve. At this point, the padding would impair the clamping effect on the outer surface areas.

In Fig. 9 an embodiment of the invention is shown in which the branch opening 74 is smaller than the inner diameter of the line 76. For example, if the line J6 has an inner diameter of 203 mm, then the diameter of the branch opening 74 and the connecting passage 78 is 152 mm. Although the small "branch opening" means less weakening of the conduit, it is desirable to expose as much of the weakened section as possible to the external pressure. At the same time, however, and for the reasons already mentioned, the right and left surface areas adjacent to the planes 88 should be exposed to the lowest possible external pressure Pressure set the sealing boundary as close as possible to the central plane 84 and which have around the circumferential web parts 87 (in the parallel planes 88) which, under pressure, place the sealing boundary area as close as possible to the Hodi points 89 of the branch opening.

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tlSQOii

In the embodiment according to FIG. 1Q, the abrasion limit area is divided into the planes yerla; ge |: t _f W & lßhe through the abduction jc $ rperteil = le 9P, which are closest to the poeh points 9 $ dgr branch opening are arranged at a small distance 93 from additional planes 96 running parallel and through these high points. This sealing body runs smoothly from the sealing parts 9Q into the straight web parts 9 ^ »puppies between ήβη planes 96 cross the weakened keltungsberelch. The functional part of the embodiment farm according to FIG. 10 consists in the fact that the contact pressure between the planes 92 and 96 acting on the line sections which are continuous on the circumference is exerted unevenly. Since the sections run continuously, they have sufficient strength ? on, either uniform or non-uniform pressures ^and resist "the force exerted by non-uniform forces deformation which they are subject, and which supply, additionally to the bulge of the attenuated, lying between them portion occurs, this section imposes a further burden When the. Distance 93 is large enough, then this increase appears to more than offset the benefit, which is that the pressure is equalized on an enlarged surface area surrounding the branch opening and the sealing boundary. It is part of the discoveries of the present invention that the benefit , an external pressure on the upper surface areas 100 of the continuous sections

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to exercise, Btcht can be compared with the advantage this pressure on the corresponding surfaces of the ei before 102 deg of the weakened section. Both most preferred embodiments is de? pressure acting from outside on a largest area- ^ area of the weakened section and on one smallest surface area of the bilateral, con ^ titular borrowed sections exercised.

Hit an arrangement like that of Pig, 10 may in the Acted a largest area of the weakened section bypass, Sq allow the distances 93 the use of corners 103 with a larger radius. All-r what can be said in common is that the transitions and the Curve shape of the supporting walls less critical is, the larger the edges or corner radii are- · * JYes at to some extent the adverse effect of bulging the continuous sections can be accepted, it is in the content of the "invention, a not applying uniform pressure to this continuous line section *

In Fig. 11 a further, right-angled processing body shown, in which the web parts are arranged so that the sealing boundary is perfect runs close to the opening high points 108 » Due to the elongated web parts IiO, however, is the Sealing boundary not as close to the central plane 112 as in previously described embodiments. The advantages of the invention are also realized here, since the edge regions 113 are exposed to the external pressure are exposed. Even where the longitudinal webs 110 the

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BAD ORiGiNAL

Limit of withdrawal, close to the low points 114 let go, is the increase in pressure, which (by .the embodiment according to Fig. 11 can be handled because of the corner surface area 113 acceptable.

In Fig. 12, a further Ausführungsforra is shown in which the sealing body 118 on the the entire length is uniform, but at which the sealing boundary from the edge of the branch opening widens as it moves away from the Laterally extending point near the high points of the branch line. The embodiment according to Fig. 12 corresponds to the other embodiments since the sealing boundary between the high and low points runs at a greater distance from the opening edge than at the high points, through this arrangement is achieved »that a larger proportion of the the weakened area is exposed to external pressure, than would be the case if the sealing body were concentric with the branch opening.

As shown in Fig. 2, the sealing body becomes. 44 pressed against the wall ^ Ta by the pressure of the medium. The relationship of the longitudinally extending Part of this wall to the cylindrical surface 46 and to the particular edges 124 is in FIG 13 and 14 shown. These parts lie in separate Planes 126 and 128 which are parallel to axis 36 and an angle 132 with the surface 46 form.

- 32 -

209815/0227

32 -; .-. ■ "■■

The relationship of the circumferential wall parts to the surfaces 46 and 47 is shown in FIG. ± 3 . These areas lie in flat planes I36 and 138, which are perpendicular to the axis 36 and are shown in FIG.

The Kant enÜbergänge from the wall 47 a from the ™ around the periphery extending portions to extend in the longitudinal direction parts are gradual and smooth.

The circumferential sealing parts 48 are pressed against the line by the upper half of the sleeve 46, while those extending in the longitudinal direction Sealing body cannot be pressed against this surface in this way. Accordingly are edges 124 along the longitudinally extending wall portions between them and each branch line is provided. These edges extend from the cylindrical surface 46 k and have surface parts 142 which lie in a single plane 144 parallel to the axis 36 '. By it will ensure the compression and support of the longitudinal webs of the sealing body 44 when the two sleeve halves clamped together around the line will. Each face 142 meets under a particular one Angle on the cylindrical surface 146.

- 33 209815/0227

BATH ORIGINAL

The other edge surfaces 146 and 148 are not located on the sealing body 44 at »the surface 146 which represents the top of the edge, is preferably parallel to the cylindrical surface 46 and im Distance to it. The surface 148 can be within a wide range of angles to the surface 46, since they does not represent a functional surface -

The ends of the edge surface 124 run obliquely in the faces 46 at the edges, the face 142 lies first on the sealing body 44 when the longitudinal webs of the sealing body can be derived from the ceiling. In this way the pressure is on the sealing body from the circumferential ones Bridge parts to the .sich extending in the longitudinal direction Bridge parts because of the uniform curve shape continuously. The walls ** 7 a are everywhere including the corners, present to the sealing body 44 against an outwardly directed, duroli the To secure movement caused by pressure of the medium " The walls 47 are preferably a yer "unden |" If you of their parts running around the circumference into the Pass over corners so that they are slightly in the direction of öer Main line are aligned »In a plane perpendicular to the branch axis 34 is a Projection of the surfaces of these walls 47 in the

209815/0227

Corners aligned. At the transition of the around the perimeter Running area, this inclined surface 47 a exerts a certain compressive force on the sealing body off, since the surface 46 is less suitable for this, and since the edge surface parts 142 a have not yet taken effect. Along the corner or edge, these parts begin on the sealing body. by lying down and pressing it. The surface or the Plächenbereieh 47 a then runs from the edge in the extending in the longitudinal direction Part; in this area the twisting turns around, as shown in Fig. 5, whereby the stop is formed, which prevents the pressure from the sealing body to the outside between the pushes away the upper half of the socket and the main line.

In Fig. 13, the location of the parts is shown when a main line IO of unusually large outside diameter is used, while in Fig. 14 the The location of the parts can be seen when a main line 10 of unusually small outer diameter is used. Because of the particular arrangement of the walls 47a and the edge-flat 142, it will be sufficient Pressure exerted on the sealing body; simultaneously there is enough space for the deformed sealing material in both extreme cases.

-35 -

209815/0227

8AD ORfGfNAL

The wall 47a and the edges 124 are shaped so that they can be manufactured as part of the more frequent socket housing holders, with no machining after casting is required «This is essential because of the high cost involved in the machine Machining could be caused «In particular, the surfaces 46, 47a, 142, 146 and 148 can be made of a special, one-piece core piece 152 are manufactured, which is shown in Fig. and which is made up of a core box 154 will * There are no undercut parts, through which it would be impossible to move the core box halves towards of arrows 156 and 158 to pull apart · With the reference · Numbers 12 and 14t denote the upper half of the bushing and the lower half of the bushing. “Of course, others can do the same Expressions are used «. For example, with reference ·· number 12 a junction can be used to designate a branch while the body 14 acts as a branch «supporting body» can be zeiohnet ", In many embodiments of this invention the fora of the sealing body around" covered areas are important »This form is made by the sealing limit determines, above which the pressure of the medium does not act on the outer pipe surface or on the The surface of the branch body can act «In most cases, the abdominal limit follows the inner edge of the ab» diohting body · It can in some cases use this edge offset in the direction of the center of the sealing body his "In any case, the sealing boundary or the" waterproofing boundary area "follows the direction of the elongated ab" diohting body.

The novel shape of the sealed area can be related to the branch opening in the upper bushing » opening to be determined «These openings are seen along the axis of the branch line, of uniform circular shape and more known in embodiments Art was the waterproofing boundary at the same distance from that

209815/022

_offlQlNW .

: Γ - -; ■■ ^; - 36 - ■■ '"■' ■ ■■■ ■ -. - ■■■ .-. ■■ - ■■■■■■■■ '■:

Edge of this opening arranged «It is an essential The feature of this invention is that the sealing boundary area diverges from the opening edge when the Abdiohtungskörper extends from the high points of the opening along the curved surfaces between which it is squeezed "

The novel arrangement can with regard to certain points can be described along the sealing boundary. For example, according to FIG. 2, this sealing boundary runs through a pair of such points P1 and P2 in the surface 46 'surrounding the opening 27. These points are located on diametrically opposite sides of the opening and form a straight line Ll, which runs parallel to the axis 36 "

Another pair of points Q1 and Q2 of the sealing boundary is, according to FIG. 3, in surfaces 146 diametrically opposite one another shown opposite; these points form a line L2 which runs perpendicular to the axis 36 «The novel The shape of the abiohting body or the abioting boundary area can be at distances between these points (and other points in between) from the closest edge of the opening are defined «The points Ql and Q2 are closest to the Intersections of the edge surfaces 146 and 142 «When the junction box is in use, the pressure of the medium points Q1 and Q2 anywhere on surface 142 or on the area of surface 46 near surface 142, or even shift on the surface 47a. It is part of the essence of the present invention that the sealing body in Art an O-ring can be effective and the seal on such a region of the surface 46 or the surface 47a can form if enough pressure is exerted The medium has the tendency to push the web parts 56, which extend in the longitudinal direction, outwards in the direction of the surface 47a "If this pressure is great enough and if the web" parts free enough to be in this outward-facing

209815/0227

• ORIGINAL BATHROOM

Direction to be shifted, then the sealing limit shifts accordingly · As a result, the sealing limit is as close as possible to level 3h and the largest possible area of the upper half of the sleeve is exposed to the external pressure «

The shape of the seal boundary with respect to the opening can be defined when looking at the projection of this shape viewed on a plane 54a, which runs perpendicular to the axis of the branch body. th shape is the effective area Ai of the branch body, on which the pressure of the medium takes effect.

The lower half of the liner or the lower support body has an inner surface facing the conduit and outer portions on either side of a central region on "No special change in the surface is required to make the transition from the central part to the outer part" reions to determine · the edge · of the cushion or upholstered body shows this transition «To the bending resistance enlarging this body is the middle surface part in the .cutted out essential parts of the other area, wherein preferably the edge of the cushioned body extends up to Incision extends.

The line is intentionally not in contact with the central inner surface area. This will make the Supporting forces condensed along the sides of the main line and because of the inclination in the outer surface areas a clamping effect prevents bulging of the pipe sides

Cutting out the middle, inner surface area increases the strength of the lower half of the bushing or of the

209815/0227

Support body. Because this incision is at least as big as is the thickness of the support body, measured on the outer surface areas and since this incision extends to the edges of the upholstery body, there is as much metal as possible above the neutral bending axis 16O (in Fig. 2), whereby the strength of the support body is excellent.

With all the junction boxes including those in which the branch "opening is smaller than the inner" diameter of the main line, it is necessary that the longitudinally extending parts of the wall 47 a in one Plane which forms an angle with the cylindrical surface 46. In Figs. 13 and 14, these planes designated by reference numerals 126 and 128, during the The angles enclosed by them are denoted by reference numeral 132. These angles prevent the pressure of the medium see the web parts 56 of the sealing body extending in the longitudinal direction on the upper half of the sleeve between this half and the surface of the main line. In the embodiments according to FIGS. 1 to 10 and 13 to 18, where the branch «opening has the same through ·· like the main line, the parts of the cylindrical surface are in the vicinity of the longitudinal direction Extending areas of the wall 47a are usually so close parallel to the axis 3% of the junction that these parts of the wall 47a must automatically be undercut by the angle 132, as can be seen in Fig "5" the reverse twist of the walls 47a, which has already been described, forms a smooth transition of the wall 47a from each corner part to the rear cut parts extending in the longitudinal direction "

Even where the branch opening in the main line is smaller than the inside diameter of the main line in the longitudinal direction extending portions of the wall 47a are arranged in the same place as in the above-mentioned embodiments. This is shown in Fig. 19, which a view similar to Figs. 13 and 14 shows how

209815/0227

BAPORiGINAL

can be seen, the branch pipe 161 is much smaller in diameter than the corresponding pipe or the corresponding passage 32 in FIGS. 13 and 14. Otherwise the structure is the same. The longitudinally extending parts of the wall 162 according to FIG. 19 are in the same place with respect to the middle plane 164 like the corresponding parts of the wall 47a in FIGS Forming surface 168, the parts of the wall 162 extending in the longitudinal direction are also behind, like the Fig. 20 shows. .

In each of the corners the wall 162 is constantly bent back in the direction of the plane 164 when it is "away from the circumference" area runs to the longitudinal part at the rear.

However, there may be valid reasons for this preferably illustrated embodiment of the invention not to use the reducing branch sleeves. Since the smaller branch openings of these reducing sleeves mean less weakening of the main line than in the case Larger branch openings, the parts of the wall extending in the longitudinal direction, which the parts 47a (Figs. 13 and 14) and 162 (Figs. 19 and 20), be placed a little further from the central plane of the main line « One of these embodiments is shown in FIGS. Reference number 170 is used to denote the cylindrical surfaces 172 and 174 denotes the bordering wall, which body 176. The ones extending in the longitudinal direction Parts of this wall are so far from the mituereη level 178 of the Main line 180 removed so that it is parallel to axis 182 of the Branch line and still form the required flat angle 184 to the surface 172. As shown in Fig. 22 is placed, there is no undercut of these parts of the Wall 170. This wall twists in every edge or corner 170 again in the direction of the central plane 178 and then back when they are in the longitudinal direction from their peripheral part to the sioh extending parts runs.

209815/0227

- 4o - Ί650055

One reason for using the structural proportions shown in FIGS. 21 and 22 is that considerable savings in the manufacture of a conduit for branch sleeves can be achieved if a sleeve of the same diameter and a number of sleeves of reduced diameter can be selected Find use, whereby a jointly refurbished sealing body can be used in each case. For example, a sealing body for a 152 χ 152 mm junction socket (152 mm for both the main line and the branch line) can be used according to the invention for the following reducing sleeves: 203 152 mm, 254 χ 152 mm and W 305 χ 152 mm. Figs. 21 and 22 show the dimensions for the 254 x 152 mm system «

Further savings can be realized by making a number of reduction sleeves by simply constricting the passages of the upper sleeve halves of certain reduction sizes to achieve a greater reduction. For example, a 254 χ 101 mm sleeve according to the invention can be obtained, such as it is shown in FIGS. 23 and 24. The upper half of the bushing in this embodiment is identical to that of FIGS. 21 and 22, but the branch line or branch passage is to be obtained with a diameter of 101 mm. From Fig. 23 it is seen that the distance 194 between the circumferential strips 192a of the sealing body and the high ⁿ points 187 of the branch passage is no greater than that shown in Fig. 21, as with the present arrangement an Abdiohtungskörper 192 is used, which is designed for a sleeve of 152.x 152 mm.

2098 15/022 7 bad original

Claims (1)

PATENT TO WÄ LTE DipUng. MARTI N L! CHT PATENTANWÄLTE LICHT, HANSMANN, HERRMANN Dr. R E I N H O L D SCHMIDT MUNICH 2 THERESI ENSTRASSE 33 Dipl.-Wirtsch.-Ing. AXEL HANSMANN Dipl.-Phys. SEBASTIAN HERRMANN 1630055 P 16 50 055.3 Mönchen, February 18, 1970 Kennedy Valve Mfg.Co., Inc. . _Your first "lw draw ™ H NEW DOCUMENTS FOR DISCLOSURE Claims 1. Branch pipe piece with a branch body, the part surrounding the pipe of which has a surface, which around a parallel to the framed pipe extending axis is curved, the branch body is fitted on part of the circumference of the tubular body, surrounds an opening arranged in the tube, and at
ends at the circumference / edges lying at a distance from one another and at axially opposite, spaced-apart points, with a pipe section which branches off from the part surrounding the pipe at the opening and which has a passage communicating with the opening, and with a Sealing body which is disposed within the branch body and forms with the surface of the pipe a sealing boundary surrounding the opening, characterized in that the sealing boundary diverges from the edge of the opening when it extends from a first pair of points which at the surface are arranged on both sides of the opening at both ends of a Durohmeesers of the opening, the diameter running parallel to the axis and just before the opposite, on the circumference 2048 t S / 0-22.7 Patent attorneys Dipl.-Ing. Martin Licht, Dipl.-Wirtsdi.-Ing. Axel Hansmann, Dipl.-Phys. Sebastian Herrmann 8 MÖNCHEN 2, THERESI ENSTRASSE 33 · Telephone ι 281202 · Tel.gramm-Adr.ne. Lipalli / Munich Bayer. Vereinibank MOnchen, Zweigst. Ojkar-von-Miller-Ring, account no. 882495 Poiticheck account: Munich No. 143397 Oppenauer BOroi PATENTANWALT DR. R E I N HOLD-S CHMIDT New documents (Art 711 Paragraph 2 No. 1 Clause 3 of the amendment notice of 4.9.19 * 7} ends at a distance from one another arranged edges. 2. Branch pipe piece according to claim 1, characterized characterized in that the boundary is further away from the opening at the periphery than the axial distance from the Opening is. 3. AbzweigungsrohrstÜek according to claim I ^ thereby characterized in that the sealing boundary is through a second pair of points extends, which on the upper L · surface is arranged at the opposite ends of the circumferential diameter of the opening, and & ß the distance between the opening and the boundary between the first and second points is greater than the distance between the first and second points from the opening. k, branch pipe piece according to claim 3, characterized in that the projection of the boundary onto a plane lying parallel to the axis and perpendicular to the central axis of the opening has a right-angled configuration. ^ 5. branch pipe piece according to claim 4, characterized characterized in that the rectangular shape is made up of a pair consists of opposite sides which are parallel to a line perpendicular to the axis. 6. branch pipe piece according to claim 5, characterized in that the remaining, opposite one another Sides of the rectangular shape are parallel to the axis. 7. A branch pipe according to claim _1, characterized in that the curved surface has the shape of a cylinder part, the axis forming the longitudinal axis of the cylinder, that the branch body on the cylindrical 209815/0227 _eAD original «Ο ■■ - ' Surface rests and forms with this on the circumference extending, sealing areas that these sealing areas arranged on opposite sides of the opening are and lie in planes which run essentially parallel to the axis, and that through the Abdiohtungskörper axially extending sealing areas are formed which extend on opposite sides of the opening are located. Ö, branch pipe piece according to claim 1, characterized characterized in that the surface has the shape of a cylinder part, that it surrounds the opening and has an out- nommena surface forms in a further, curved surface, which also surrounds the opening that the opening in the recessed area is arranged that the recessed area and the other area by side walls with each other are connected, which also surround the opening, and that the sealing body along the outer edge region the recessed area is arranged so that the outer edge comes to lie close to the side walls. 9. Branch pipe according to claim 8, characterized in that the side walls and the sealing body each have areas extending on the circumference, which are mounted on the opposite sides of the opening, as well as axially extending areas, which are also arranged on the opposite sides of the opening. 10. branch pipe piece according to claim 9 »characterized in that a pair of elongated jCanten axially extends from the recessed area and to the opposite Sides of the opening are aligned between the axially extending side walls and the opening, and that the edges are spaced from the opening and from the 2 0 98 IS / U? 27 16500b5 axially extending side walls are provided. 11. branch pipe piece according to claim 10, characterized in that the axially extending portions of the sealing body between the edges and the axially extending side walls are arranged so that the sealing bodies abut against the edges to form two sealing delimitation areas, which run parallel to the axis, and that the other surface b has the shape of a cylinder which is coaxial with the is arranged cylindrically recessed surface. 12. Abzweigungsrohrstiick according to claim 1, characterized characterized in that the outer surface is concentric with the Area of the junction body is and from. this bordered is that in the pipe side an opening is arranged which is below the opening of the branch body aligned and in alignment with this so that the Opening communicates with the passage of the branch body, that the sealing body is the side opening surrounds and between the surface of the junction body and the outer tube surface is compressed to with "to form a sealing boundary of the pipe surface, soft diverges from the edge of the side opening as it extends from a pair of points on the surface of the tube at both ends of a diameter of the side opening are arranged, the diameter running parallel to the pipe axis. 13. Branch pipe piece, characterized in that a branch body has a region surrounding the pipe the surface of which is curved about an axis parallel to the framed pipe, the branch body comprises a region of the pipe circumference and is equipped with an opening that extends from the 2098 15/0227 Pipe surrounding area branches off a piece of pipe and with an outlet is provided therein, which extends at an angle to the pipe axis and with the Opening communicates that a sealing body is arranged within the branch body and with the surface of the same forms a sealing boundary, surrounding the opening that the sealing boundary diverges from the edge of the opening as it moves away from a first pair of points which are arranged at both ends of an opening diameter that is parallel extends to the axis, and that the surface forms a recessed surface of a further curved surface that the Opening arranged in the recessed area and from this and the other surface is surrounded, so that the area taken by means of side walls with the other area is in connection, the side walls also surround the opening and diverge from the edge of the opening as they extend from a pair of points which at both ends of the opening diameter is arranged, and that the sealing body in the recess along the outer edge of the recessed area is arranged so that that the outer edge comes to rest close to the side walls, 14, branch pipe section according to claim 13, characterized characterized in that the side walls and the sealing body are each circumferentially extending regions on the have opposite sides of the opening as well axially extending areas on both sides of the Opening so that the recessed area has a few elongated, axially extending edges, which on the opposite Sides of the opening between the opening and the axially extending portions of the side walls and that the axially extending regions of the sealing body between the axially extending Edges and the axially extending side walls. 209815/0227. are arranged. , 15. Branch pipe piece according to claim 14, characterized in that the side walls are curved and have a smooth transition at the edges, which connect their circumferentially and axially extending side parts. 16. Branch pipe piece according to claim 15 »" characterized in that fc through the transition of the side wall in every corner this is converted into a further, flat plane, which includes the axis and perpendicular to the The axis of the opening is as the side wall extends around the corner from its peripheral area, and that of the Transition of the side wall in each corner is returned to reduce the attachment when the side wall is down continues in the direction of the axial area. I ?. Branch pipe piece according to Claim 16, characterized in that the reverse transfer of the side wall in each edge causes this side wall to be separated from k of the other, flat plane is displaced when the side wall continues in its axial area, the axial area on at least the major part of its length opposite, the other, flat plane is offset. 18, branch pipe piece with a branch body, the part of which encompasses the pipe with a surface is equipped around a parallel to the pipe Axis is curved, characterized in that an opening is provided in the branch body, which on the circumference of the tube is arranged to have a passage provided tube at an angle to the axis of the opening branches off that a sealing body forms a sealing boundary with the surface which surrounds the opening, 209815/0227 1650065 that a support body is equipped with a surface part, which the opposite peripheral region of the Tube comprises and which has a centrally located circumferential area in the opening of the branch body opposite layer, the area extending in opposite directions into a pair of pipe-supporting, circumferentially arranged, outer areas continues, which on both sides of the central area are arranged that the support body is attached to .Abzweigungskörper to clamp the pipe therebetween, that the outer support surfaces of the tube on the circumference are elastic and resilient, that the centrally arranged surfaces - part is recessed in the opening opposite position relative to the elastic surfaces to receive the pipe section in the opening opposite position and around the support of the opposite pipe area with the help of the support body on the To reinforce the circumference of the outer, elastic surface area. 19. Branch pipe piece according to claim 18, characterized characterized in that the elastic, damping surfaces are guided towards one another when they are in circumference Direction of the centrally arranged area extend so that they form elastic wedge surfaces between which the pipe is pinched. 20. Branch pipe piece according to claim 18, characterized characterized in that the elastic surface parts are provided with elastic, damping elements, which on a relatively rigid surface of the support body, and which forming the recess in are arranged at a considerable distance from one another, the recess being on the axial length of the elastic Body stretches. 209815/0227 * ■■ - ■ 21. Branch pipe piece according to claim 20, characterized in that the below the recess lying, relatively flat surface part of the support skör per s is also excluded with regard to the area below the elastic body. 22. Branch pipe piece according to claim 20, characterized in that the elastic regions are substantially have the same, uniform thickness. "23. Branch pipe piece according to claim 18, characterized characterized in that the sealing boundary of / ier The opening diverges as it extends from a pair of points located on the surface of the branch body at both ends of the opening diameter, the opening diameter being parallel to the Axis runs. 24. Branch pipe piece according to claim 23, characterized characterized in that the projecting of the sealing boundary on a flat plane parallel to the axis and perpendicular is rectangular in shape to the axis of the opening. > ".: ■ ■■■.:, ■■■: ■■. 25. From the junction srohrs-tick with a side opening having main line and one with the opening secondary line communicating in the main line, the axis of the branch line intersecting the axis of the main line, characterized in that the secondary line is connected to the main line by a branch body is connected that a sealing body and a support body are used on the branch body that the branch body is exposed to a part which encompasses the tube and which engages around a circumferential region of the tube and is equipped with an opening which comes to lie over the side opening in the pipe that a branch body 20981 B / 0227 Pipe rait located therein passage is arranged that the axis of the pipe the main axis under an ¥ angle cuts that one end of the pipe section of the branch body is connected to the opening in the main pipe, wherein the branch body at its opposite end under a seal and slidable at the end of a Branch line is arranged so that the sealing body surrounds the openings of the pipe and branch body and encompasses sealing between the / las pipe Area and the main pipe is compressed to form a sealing boundary surrounding the openings, that the projecting of the from the sealing boundary surrounding area on a first plane, which is parallel to the main pipe axis and perpendicular to a second plane is larger than the projecting onto. the first E ^ ene of the area, which through the outer diameter knife of the branch pipe is surrounded, whereby the through the The effect of the force released by the internal pressure, the to push branch body facing away from the main line direction, is greater than the tendency to move the branch body in the direction of the main line that the Support body surrounds the circumferential area of the pipe opposite the support body and is connected to it is to clamp the pipe therebetween, whereby the greater force, which is effective to move the branch body in a direction away from the main line, presses against the support body in order to secure it to apply against areas of the pipe circumference, which areas are arranged in the circumference with respect to the openings, so that a counterforce is created, which against the by the Internal pressure released force is effective, by which the areas of the circumference are pressed radially outward. 20 98Ί5 / 0227 26. Äozweigungsrohrstick according to claim 25 ", characterized characterized in that the axis of the lifting line is aligned at a right angle to the axis of the main line, that the first plane is essentially perpendicular to the axis = the secondary line is that the support body has a surface that rests on the pipe and consists of a surface on the circumference centrally located part is opposite the side opening, and which is in opposite Direction extends in a pair of pipe sections that form the outer areas on either side of the middle Surrounding area that the circumferentially arranged outer surface areas are elastic and deformable that the centrally located area with respect to the elastic and deformable surface area is excluded to receive the pipe section opposite the opening and around the support of the pipe with the help of the support body on the outer, elastic and deformable surfaces to reinforce at the circumference, creating the greater force which the branch body in the direction of the bypass pipe pressure causes the circumferential, outer and elastic surface area is firmly pressed against the pipe urea catch. 27. Branch pipe piece according to claim 26, characterized in that the sealing boundary of the Side opening diverges when it is different from a pair of Points extends that are aligned on the surface of the main conduit on both ends of the side opening diameter with the diameter parallel to the axis of the main line. 2 B. Branch pipe section according to claim 25, characterized in that the axis of the secondary line is at right angles to the axis of the main line, and that the first level perpendicular to the axis of the side wall so that the support 20 9815/0227 body has a surface area resting on the pipe, which consists of a part arranged centrally on the Ussfang is that this part of the side opening is aligned opposite and on the circumference in opposite directions Directions in a pair of outer areas which the pipe supporting on either side of the central area are aligned so that the area arranged in the middle with respect to the area arranged on the circumference, outer surface area is excluded to the pipe section record, which is opposite the opening aligned, and ma the support of the pipe with Help of the support body on the outer surface areas to concentrate on the scope and to lose sight of what the greater force acting on the junction body to shift in a direction away from the main ltd. whereby the outer surface areas arranged on the circumference be pressed against the outer circumference of the tube that the Axial length of the outer surface areas arranged on the circumference is limited in order to increase the force supporting the tube, which is applied to the circumferential areas of the tube namely exercised on the circumference with respect to the side opening will. 29. Branch pipe piece according to claim 26, characterized in that the arranged in the branch body Opening runs in a curved surface which the Surrounding opening and giving way to another curved Area is excluded, wherein the further area also surrounds the opening that the recessed area and the other surface are interconnected by side edges which also surround the opening, and that the sealing body is aligned along the edge of the recessed area near the side walls. 2Q98 15 / Q227