FI83111B - Protective plug for pipe - Google Patents

Abstract

The present invention relates to a protective plug for pipes of various dimensions. The plug has annular walls 1, 2, 3 lying one inside another. When a plug is fixed in a weak pipe it projects from the pipe as an annular flange and prevents the pipe being fitted right up to a wall. Weak pipes can also be fitted up against a wall by using a protective plug, the annular walls 1, 2, 3 of which are parallel with one another and eccentric. <IMAGE>

Description

1 83111

The present invention relates to a pipe protection plug consisting of interconnected nested ring-5 walls of different diameters which fit the ends of pipes of different sizes.

When installing plastic pipes, a plug is inserted into their sleeve ends to prevent foreign matter from entering the pipe. This applies in particular to sewer pipes to be installed in buildings 10, the internal parts of which must be protected before connecting furniture, such as floor drains and basins, to the sewer.

In order not to have to make a separate plug for each pipe size, it is known to make protective plugs with a few nested ring walls for different pipe sizes. In the case of large diameter pipes, the edge of the plug is attached to the end of the pipe. In the case of small pipes, on the other hand, the plug protrudes like an annular flange from the outer surface of the pipe. This prevents the pipes from being installed close to the wall 20, which is usually the most suitable place for sewer pipes, for example.

It is an object of the present invention to provide a protective plug for a pipe which allows even small pipes to be installed close to the wall. The protective plug according to the invention is characterized in that at least the outermost annular walls are located parallel eccentrically to one another,

The invention provides the advantage that the protective plug protrudes in one direction only slightly from the outer surface of the pipe in connection with small pipes, as a result of which the pipe can be installed close to a wall or other obstacle. The protective plug protrudes more than known plugs on the opposite side of the pipe, but this is not a disadvantage during installation.

The protective plug according to the invention will now be described in more detail with reference to the accompanying drawing, in which Fig. 83 shows a first embodiment of a protective plug according to the invention, Fig. 2 is a view of the other end of Fig. 1, Fig.

III and Fig. 4 shows a section according to Fig. 3 of a second embodiment of a protective plug according to the invention.

The pipe plastic protective plug-10 pa according to Figures 1-3 consists of nested ring walls 1, 2 and 3. By means of the outer surfaces of the ring walls the plug is attached to the pipe sleeve end 4 by pressing the outer surface against the inner surface of the sleeve head. 3.

The annular walls 1 to 3 are connected to each other by walls 6, 7 and 8 transverse to the center line of the walls.

According to the invention, at least the outermost annular walls 1-3 of the protective plug are located eccentrically parallel to each other. In the embodiment according to Figures 1-3, the walls 1 and 2 are clearly eccentric, the walls 2 and 3 being only slightly eccentric with respect to each other.

The protective plug according to the invention operates in the following way. When the protective plug is pushed over a small diameter plug end of the pipe, the plug protrudes considerably from the surface of the pipe to one side thereof, but only slightly to the opposite side of the pipe. By placing the plug at the end of the pipe so that the latter side is facing the wall, for example, the pipe can be installed in the vicinity of the wall. The plug is removed when, for example, a floor drain is connected to the end of the pipe.

Figure 4 shows another embodiment of a protective plug according to the invention. The plug has a circular partition 9, 35 with ring-shaped members attached to opposite sides.

Claims (3)

3 83111 walls 10 to 12 and 13 to 15. The annular walls 10 and 11 are strongly eccentric with respect to each other, while the walls 11 and 12 are substantially concentric. The annular walls 13-15 are all clearly eccentric in the parallel 5, so that the distance between the walls is small at the bottom of Figure 4 and considerably larger at the top of the figure. The ring walls 10 to 12 are intended to be inserted into the pipe sleeve, and the walls 13 to 15 are intended to be inserted onto the plug end of the pipe. The protective plug according to the invention is not limited to the above-mentioned examples, but may vary within the scope of the appended claims. A pipe sheath consisting of interconnected nested annular walls (1-3) of different diameters which fit the ends of pipes (4,5) of different sizes, characterized in that at least the outermost annular walls (1-3) are located parallel to each other eccentrically. 25 For example, the number of rings on the other side of the ring (1 to 3) with the diameter of the ring (1-3) with the diameter of the ring (4,5) is the dimension (s) of the ring size (1 to 3) -3) är be-30 lägna ät samma Häll excentriskt i förhällande account varandra.