DE29618704U1 - Plug made of concrete - Google Patents

Description

G 8931 EN

Albin Nessmann

Samenhandelstrasse 45/1

72770 Reutlingen

Concrete cast plug

The invention relates to a plug cast from concrete for closing conical holes in concrete parts created by formwork parts, with a frustoconical body adapted to the conical holes.

Such plugs are already known for closing conical holes that remain in concrete walls or ceilings after the formwork has been removed. They are commercially available in different diameters and heights and are glued into the concrete parts using a two-component adhesive. To do this, they must be dipped into the adhesive and inserted into the hole to be closed. When dipping the plug into the adhesive, it is unavoidable with the plugs known to date that your fingers also come into contact with the adhesive. Gloves must therefore be worn when inserting the plugs. In addition, excess adhesive is pressed outwards along the hole walls and must then be wiped off.

The present invention is based on the object of improving the handling of the known stoppers. The object is achieved with a stopper of the type mentioned at the beginning in that an eyelet made of wire or the like is arranged on the base of the truncated cone-shaped body.

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net, the ends of which are cast into the concrete body of the plug. With the plug according to the invention, the plug can be held at the eyelet and dipped into the adhesive. This means that the hand no longer comes into contact with the adhesive. After inserting the plug, the eyelet, which can advantageously be bent from a piece of wire, with the ends of the piece of wire bent outwards for better anchoring in the concrete body, can be pinched off or simply bent off. In the latter case, the eyelet is then covered by a layer of plaster or the like. Further advantages can be achieved by providing the conical surface of the plug body with longitudinal grooves. Excess adhesive can collect in these grooves. These grooves can advantageously only extend over part of the height of the truncated cone-shaped body of the plug. The grooves then do not form a channel to the surface of the inserted plug through which adhesive could possibly leak out. An additional concentration of the adhesive collecting in the grooves in the area of the tapered end of the plug can be achieved by increasing the groove depths towards the tapered end of the plug.

The invention also proposes a casting and transport mold for the concrete plugs according to the invention, which is characterized by a rectangular base plate with several conical recesses for the production and transport of several plugs, the external dimensions of the base plate being matched to the dimensions of a Euro pallet and the mold being designed to be stackable. In this way, several concrete plugs can be cast in one and the same mold and then several molds can be stacked in a Euro pallet for transport.

G 8931 EN

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A preferred embodiment of a plug according to the invention is explained in more detail below with reference to the drawing.

Shown: Fig. 1

a central longitudinal section through a concrete plug with header;

Fig.2

a partially sectioned side view of a second embodiment of a plug;

Fig,

a view from below of the plug according to Fig. 2.

The plug 10 according to Fig. 1 has a truncated cone-shaped concrete body 11 into which a holder 12 is cast. The holder 12 is formed by a wire eyelet 13 that protrudes over the base side 11.1 of the concrete body 11, the ends 14 and 15 of which are bent outwards and lie in the area of the tapered end 11.2 of the concrete body 11. This ensures that the wire eyelet 13 is securely held in the concrete body 11. The holder 12 is preformed and inserted into the mold for the concrete plug 10 before the concrete is poured in and is then enclosed by the poured concrete.

Fig. 2 and 3 show the base body 11' of another embodiment of a concrete plug according to the invention, in which the holders are omitted for reasons of clarity. The body 11' here has a total of four longitudinal grooves 16 in its outer surface. The longitudinal grooves 16 extend from the tapered end 11.2' of the concrete body to beyond the middle of the body 11', they end

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but clearly below the base surface 11.1' of the body 11 ^f .

As shown in particular in Fig. 3, the grooves 16 have a triangular cross-section, with the groove depth decreasing in the direction of the base surface 11.1' of the concrete body 11'. The grooves 16 serve to absorb excess adhesive and thus prevent it from being pressed outwards along the wall of the hole to be plugged and having to be stripped off there.

Claims (6)

G 8931 DE - 5 - Protection claims: 1. Plug cast from concrete for closing conical holes in concrete parts that are created by formwork parts, with a truncated cone-shaped body adapted to the conical holes, characterized in that an eyelet (13) made of wire or the like is arranged on the base side (11.1, 11.1') of the truncated cone-shaped body (11, 11'), the ends (14, 15) of which are cast into the concrete body (11) of the plug (10). 2. Plug according to claim 1, characterized in that the eyelet (13) is bent from a piece of wire, the ends of the piece of wire (14, 15) being bent outwards for better anchoring in the body (11) of the plug (10). 3. Plug according to claim 1 or 2, characterized in that the conical outer surface of the body (11) is provided with longitudinal grooves (16). 4. Plug according to claim 3, characterized in that the grooves (16) extend only over a part of the height of the frustoconical body (11). 5. Plug according to claim 3 or 4, characterized in that the groove depths increase towards the tapered end (11.2') of the body (11). G 8931 EN 6. Casting and transport mold for concrete plugs according to one of claims 1 to 5, characterized by a rectangular base plate with several conical recesses for the production and transport of several plugs, the external dimensions of the base plate being matched to the dimensions of a Euro pallet and the mold being designed to be stackable. DM/F