Pipe joints or couplings – End to side or plate
Patent
1992-07-10
1994-08-23
Nicholson, Eric K.
Pipe joints or couplings
End to side or plate
285213, 285201, 285382, 285222, 522208, 29525, F16L 500, F16L 1314
Patent
active
053401662
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The object of this invention is a conduit collar and a method for installing a conduit collar into a hole made into a concrete or stone structure.
In industrial construction work it is at times necessary to insert pipes, hoses, conductors, etc., through structures. The normal procedure is to use a diamond drill to bore a hole in the desired spot for passing through the pipes, etc. As the items to be passed through must not come into contact with the surrounding structure, it is necessary to provide the hole with a protective collar to prevent the entry of water and falling material. As the conduit collar it may be used a pipe with a flange welded thereto for its fastening and sealing. Often it is also necessary to have the concrete structure around the hole pick dressed to accommodate the flange prior to the final mounting of the collar. Using wedge anchors, the collar pipe is then fastened by its flange to the concrete structure. This is followed by concrete being cast over the flange to provide well sealed fastening. The resulting surface may require finishing.
Another way of installing a conduit in a concrete structure is to weld starter bars onto the conduit collar sheath. The collar is then inserted in the hole. The gap between the collar pipe and the hole periphery is then boarded up from below and concrete is poured into the gap to fuse the collar with the concrete structure. The formwork boards are dismantled once the concrete has set.
Yet another way to execute a conduit is to use two pipes, one inside the other and both tapering in the same direction. Here too, the external pipe has to be provided with a flange for the pipe to stay in the hole. Sealing compound is also often needed between the pipe sheaths. Another precaution is to bolt the flange of the other pipe to the floor.
The disadvantages of the above methods include time consuming installation, the labour input of several persons, and several work stages (pick dressing, casting of concrete, welding and formwork). The fastening of the boarding underneath the hole is difficult because high elevations or cramped spaces necessitate different scaffolding for the assembling and dismantling of the formwork. The latter method necessitates the use of two pipes.
SUMMARY OF THE INVENTION
The conduit collar and the method for installing it in accordance with the invention are decisive improvements on the above shortcomings.
The foremost advantage of the invention maybe considered to be in that the collar and method in accordance with the invention facilitate speedy installation as well as a well sealed and ready-to-use structure. Most advantageously, the collar comprises two ribs inserted into the hole wherein they result in a stable structure within the hole and the resultant sealing effect is superior to that achievable if only one rib is employed. Additionally, it is advantageous that the rib near the mouth of the hole seals the mouth and thereby prevents water from flowing into the gap between the hole and the collar sheath. If the collar comprises three or more ribs inserted into the hole, the resultant friction between the hole and the rib may become quite considerable. Due to the above reasons, the most advantageous form of implementation of the invention will comprise two insertable ribs.
In the following, the invention is described in detail by referring to the appended drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIGS. 1a and 1b depict the conduit collar in accordance with the invention.
FIG. 2 depicts the insertion into a hole made into a concrete structure of a conduit collar in accordance with the invention.
FIG. 3 depicts the fastening into a hole of a conduit collar in accordance with the invention.
FIG. 4 depicts the draw-in device being used to insert the conduit collar into the hole.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The conduit collar depicted in FIG. 1 comprises ribs 1, 2, and 2' and a tube 3 with an outside diameter of d.sub.1. Ribs 1, 2, and 2' are advantageously essentially wedge-lik
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Juusti Pekka
Juusti Vesa
Puttonen Martti
Nicholson Eric K.
RP Oy Teollisuuden ja Rakentaijain Palvelukeskus
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