AU6441299A

AU6441299A - Core hole sealing method and apparatus

Info

Publication number: AU6441299A
Application number: AU64412/99A
Authority: AU
Inventors: Darren William Blake
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-09
Filing date: 1999-12-09
Publication date: 2000-06-15

Description

AUSTRALIA

Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATENT Applicant(s): DARREN WILLIAM BLAKE Invention Title: CORE HOLE SEALING METHOD AND APPARATUS r The following statement is a full description of this invention, including the best method of performing it known to me/us: CORE HOLE SEALING METHOD AND APPARATUS Field of the Invention The present invention relates to the sealing of holes in partitions, particularly, but not exclusively, where the hole has been formed to allow a pipe or cable to pass through the hole.

Background of the Invention Often, in the construction or alteration of buildings, it is necessary to pass pipes or cables or the like through a partition, such as a wall or floor. For example, such a partition may be a concrete slab floor or wall. This is normally done by drilling a hole through the slab of dimensions slightly larger than the cable or pipe so that the pipe or cable can be passed there through. Subsequently, the space around the pipe must be sealed. A backing plate is normally formed around the circumference of the pipe and attached to the concrete slab and a filler is used to fill the gap around the pipe or cable so as to ensure that the slab is sealed around the pipe or cable.

The process of attaching a backing plate to a partition, such as a concrete slab before filling is a complex one. Often, a tin plate is utilized a hole the size of the pipe initially cut in the middle of the tin plate. A slot can be cut in the plate and the plate attached around the pipe and then attached to a concrete slab by means of nails/screws or the like.

30 Where a large number of sealing operations are required in a building, for example, an excessive amount of time is often required to undertake proper sealing operations.

35 Summary of the Invention In accordance with the first aspect of the present invention, there is provided a core sealing apparatus for facilitating sealing of a hole in a partition through which a pipe or cable or the like passes. The apparatus comprising a plurality of sheets which, when brought 1:Spec3OO 399UOO- 349X33020.doc 9/12/99 together, form an aperture for receiving the pipe, and adhesive on one surface of the sheets, the adhesive being arranged to attach the one surface of the sheets to a first surface of the partition from which the pipe or cable issues.

Edges (minor surfaces) of the sheets preferably abut the pipe or cable and major surfaces (eg. top or bottom) of the sheets are adhered to the surface.

This effectively results in a seal about the pipe or cable to the first surface. The sheets then form a "base" to support fill material to fill the aperture formed between the pipe or cable and the partition where the pipe or cable passes through the partition.

In accordance with a further aspect of the present invention, there is provided a core sealing apparatus for facilitating sealing of a hole in a partition through which a pipe or cable or the like passes, the apparatus comprising a sheet arrangement having an aperture therein, being arranged to receive the pipe or cable within the aperture, and an adhesive on one surface of the sheet arrangement, the adhesive being arranged to attach the sheet arrangement to the first surface.

The sheet arrangement may be a plurality of 25 sheets which form an aperture receive the cable or pipe, as discussed above. Alternatively, the sheet arrangement may comprise a single sheet having an aperture and a slot running from the aperture to an external border of the sheet, so that the sheet can be passed around the pipe or 30 cable via the slot so that the pipe or cable is received within the aperture. Preferably, the walls of the aperture in the sheet arrangement fit close enough to the pipe or cable to support filler material filling a hole between the pipe or cable and hole in the partition from 35 falling out.

In accordance with a further aspect of the present invention, there is provided a core sealing apparatus for facilitating sealing of a hole in a partition, the core sealing apparatus comprising a sheet arrangement having adhesive arranged to attach to one J:SpcA3X 399OO 349%33020.doc 9/12199 surface of the partition about the hole, whereby the hole may be filled with filler material and the sheet provides a support preventing the filler material falling away.

The present invention yet further provides a method of sealing a hole in a partition through which a pipe or cable or the like passes, the method comprising the steps of placing a sheet arrangement in accordance with any one of the first two aspects of the present invention about the pipe or cable so that the pipe or cable is positioned within the aperture in the sheet arrangement, and adhering the sheet arrangement to the surface of the partition adjacent the hole.

The method further comprises the step of filling the hole with filler material.

The present invention yet further provides a core sealing apparatus for attachment to a first surface and around a pipe or cable or the like, said apparatus comprising a plurality of sheets which, when brought together, form a central aperture around said pipe, and an adhesive glue on one surface of said sheets, said adhesive being of sufficient strength to substantially permanently attach said sheets to said first surface so as to substantially form a seal around said pipe or cable.

The present invention further provides a core 25 sealing apparatus for attachment to a first surface and around a pipe or cable or the like, said apparatus comprising a rigid sheet having a central aperture and a slot running from said aperture to an external border of said sheet, and an adhesive glue on one surface of said 30 sheet, said adhesive being of sufficient strength to substantially permanently attach said sheet to said first surface In the above aspects of the invention, the sheet is preferably rigid enough to provide support for the filler material, but also substantially flexible enough in e...the case of the sheet arrangement which includes an aperture and a slot, to enable the sheet to be placed about the pipe or cable via the slot.

Brief Description of the Drawings J:SpeMOO 399300 34933020.doc 9/12/99 Notwithstanding any other forms which may fall within the scope of the present invention, preferred forms of the invention will now be described, by way of example only, with reference to the accompanying drawings in which: Fig. 1 illustrates the operation of the preferred embodiment; Fig. 2 illustrates a section through the preferred embodiment; and Figs. 3 and 4 illustrate alternative forms of the preferred embodiment.

Description of Preferred and Other Embodiments Turning initially to Fig. i, there is illustrated the basic operation of the preferred embodiment of the present invention. In Fig. 1, a partition, in this example being a concrete slab i, is shown in section and includes a hole 2 through which a pipe 3 is formed. The hole 2 in the concrete slab 1 can be formed by drilling and will normally form a space 4 around the pipes 3 which, in accordance with standard building regulations, must be filled. In one form of an embodiment of the present invention, a sheet arrangement, in this example being two plastics pieces 7, 8 are formed around the pipe 3 with the pieces 7, 8 including a strong adhesive on the upper 25 surfaces 9, 10. The adhesive can comprise the adhesive denoted 3M-9469AD from the 3M Corporation, but may comprise any other suitable adhesive. The pieces 7, 8 are then attached to a bottom surface eg. 11 of the slab 1 so as to be firmly affixed thereto. Edges 20, 21 of the sheet substantially abut the pipe 3, so that the pipe 3 runs through an aperture 22 formed by the pieces 7, 8.

.i The pieces 7, 8, form a base which can support filler subsequently poured into the hole to fill the hole between the pipe 3 and the walls 24 of the hole 2.

35 In this manner, a fast and effective core sealing method can be implemented which substantially reduces the time and complexity in previous implementations. The pieces 7, 8 can be mass produced having a cross section as illustrated in Fig. 2 which includes a lower plastic former member 12 which can be approximately 1.5 3mm in JASpecMW OO- 399"3O 34%33O2.doc 9/12199 diameter followed by an adhesive layer 13 and a peel off layer 14 which can be peeled off just before use.

Pieces can be mass-produced with different dimensions forming different sized apertures for receiving different diameters of pipes and cables. For example, in the building industry, there are a number of standard sizes of pipes. Pieces which form the standard size apertures to receive the standard size pipes could be mass produced.

Different possible arrangements can be provided with Fig. 3 illustrating the two piece arrangement of Fig. 1 and Fig. 4 illustrating a sheet arrangement which comprises single piece arrangement which includes a central aperture 16 and a slot 17. The slot 17 can be widened by out of plane bending of the piece 18 so as to have the aperture 16 inserted around the pipes or cable.

Subsequently, the surface of the piece 18 is stuck to the surface of the partition.

Other possible arrangements could be provided, including, for example, a three, four or more piece arrangement.

The apparatus of the present invention may be used with any partition, including floors, walls, ceilings, where a pipe or cable or other conduit is required to pass. The term "partition" in this specification should be read.broadly to cover any body from which a pipe or cable issues or passes through, including walls, floors, ceilings, part-walls, part-floors.

In a further embodiment of the invention, a sheet arrangement comprises a single sheet without any means for 30 forming an aperture, such as cut-outs in the sheet, or a hole in the sheet, and is intended merely to provide a support for ceiling holes where no pipe or cable passes through. In this embodiment, one surface of the sheet is adhered to one surface of the partition, so that the sheet blocks the hole. Filler material can then be put into the hole to fill the hole. This is useful where holes are mistakenly formed in the wrong place, and need to be filled.

Note that the partition may be of any material and need not be of concrete. For example, it may be of wood, JA.Spoc00 399000 34933020.doc 9/12199 fibro, or any other material.

It would be appreciated by a person skilled in the art that numerous variations and/or modifications may be made to the present invention as shown in the specific embodiments without departing from the spirit or scope of the invention as broadly described. The present embodiments are, therefore, to be considered in all respects to be illustrative and not restrictive.

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Claims

2. A core sealing apparatus in accordance with claim i, wherein the sheet arrangement includes a plurality of sheets, which, when brought together form the aperture.
3. A core sealing apparatus in accordance with claim i, wherein the sheet arrangement comprises a single sheet including the aperture and a slot running from the aperture to an external border of the sheet, so that the sheet can be passed around the pipe or cable via the slot so that the pipe or cable is received within the aperture.
4. A core sealing apparatus in accordance with any one of the preceding claims, wherein the sheet arrangement is S 25 produced with pre-defined dimensions to fit appropriate dimensions as standard size pipes or cables.
5. A core sealing apparatus for facilitating sealing of a hole in a partition through which a pipe or cable or the like passes. The apparatus comprising a plurality of sheets which, when brought together, form an aperture for receiving the pipe, and adhesive on one surface of the sheets, the adhesive being arranged to attach the one surface of the sheets to a first surface of the partition 35 from which the pipe or cable issues.
6. A method of sealing a hole in a partition through which a pipe or cable or the like passes, comprising the steps of placing the sheet arrangement in accordance with IJSpecAMO 3993O 9A3020. 9/12/99 -9- any one of the preceding claims, about the pipe or cable so that the pipe or cable is positioned within the aperture in the sheet arrangement, and adhering the sheet arrangement to the surface of the partition adjacent to hole.
7. A method in accordance with claim 6, further comprising the step of filling the hole with filler material. Dated This 9 t h Day of December 1999 DARREN WILLIAM BLAKE By their Patent Attorneys GRIFFITH HACK sgees :.00 o°°00 ee0.0 J:ASpacl%"0 399N300 349U3020.doc 9/12/99