EP1417047A1

EP1417047A1 - Dust collector

Info

Publication number: EP1417047A1
Application number: EP02796188A
Authority: EP
Inventors: Thomas Dickson
Original assignee: Textcompany; Tomcat Design
Current assignee: Textcompany; Tomcat Design
Priority date: 2001-08-07
Filing date: 2002-08-07
Publication date: 2004-05-12
Also published as: WO2003018219A1

Abstract

A dust collector (26) for detachable, e.g. by adhesion, placing at and collecting of dust (29) from a hole (31) drilled in a mainly vertical wall (28) and comprising a first (1;18) and second (9;19) relatively thin sheet facing the wall (28) and away from the wall respectively upon use. The dust collector is formed by the two sheets (1,9;18,19) connected along a continuously extending part of their edges (5a,5b,8;12a,12b,13;35a,35b;36a,36b). In the preferred embodiment, the two edges are a part of a plane unfolded blank (17;34;37) in which the second sheet (9;19) is designed with a fold line (14) extending between two points (15a,15b) on its free edge (10). The second field can be used for printing a message such as an advert or user instructions. The dust collector can be produced by means of simple tools of inexpensive materials such as paper, cardboard, plastic or paperboard that in themselves do not have any great stiffness of shape, the special geometric design of the dust collector providing the necessary stiffness of shape for the dust collector not to loose its adherent hold on the hanging wall.

Description

us collector

The invention relates to a dust collector for detachable placing at and collecting of dust from a hole drilled in a mainly vertical wall and comprising a first and second relatively thin sheet facing the wall and away from the wall, respectively, upon use.

When fixtures and fittings such as a piece of furniture or a frame are to be hanged up on a wall or for example cables are to be led through a wall, it is necessary to first drill hanging or leading-in holes in this wall. Thereby, drill dust is created which will both be spread to the surroundings and be deposited on wall and floor beneath the hole.

In rooms that already are furnished and/or equipped with carpets, cleaning can often be difficult. The drill dust can be deposited behind cupboards, book cases, beds, sofas or similar furniture which are standing close up against the wall and which therefore will have to be moved in order to able to obtain access with for example a vacuum cleaner or a broom and dustpan. The drill dust can be coloured and therefore cause a smudging of the wall or floor which necessitates a washing or even a painting of this wall/floor.

In such places where it is not possible or difficult to move the furniture, or in places where no smudging is desired for that matter for example on a newly dressed, carpeted or varnished floor, the nozzle of the vacuum cleaner can be held ready beneath the drill to catch and suck in as much of the drill dust as possible.

The risk of making scratches, marks or damaging the wall in another way during this process is .increased by the fact that there often is not sufficient room for the two people who both have to reach the same point. As the person holding the vacuum cleaner will try to avoid touching both the wall and the drill, he/she will get tired in the arm and can eventually not keep the vacuum nozzle still. Large amounts of drill dust will therefore not be caught by the suction power of the vacuum cleaner.

To this should be added that most vacuum cleaners are not arranged to handle fine dust. Filters will be blocked and bearings will be fouled when fine dust is sucked in. Furthermore, a blocked filter will often mean that the dust indicator will give an erroneous signal and a continued vacuuming with a blocked filter will increase the risk of the vacuum cleaner seizing. Even if the user instructions of some vacuum cleaners may inform that a vacuum cleaner is arranged to suck up dust, the associated bags and filters are made especially for use in one vacuum cleaner model and are therefore expensive.

Several of these problems have been tried solved by means of the container known from the British patent GB 2274706 for collecting drill dust during drilling of a hole in e.g. a wall .

The container has opposite side walls serving for keeping the container distended during drilling and attendant dust collecting. In the situation of use, the container is hanged detachably on a wall in the place where the hole is to be drilled. The hole is drilled through a part of the back wall of the container, and the drill dust will glide through the opening defined by the front, back and side walls of the container to receive the dust. When the drilling process is completed, the container is compressed and discarded. As the opening through which the dust is collected is not covered, the subsequent compression will press some of the dust out of the container. As the drill during the drilling process is penetrating a part of the back wall of the container, this wall can loose its adherent hold of the wall at the risk of the drill bringing the container into corotation and hurling the collected drill dust out of the container.

Another container also serving for collecting drill dust while drilling is known from the German utility patent DE 299 20 353. This container is designed in a way similar to the container known from GB 2274706, and the use of this drill dust collector therefore involves similar disadvantages as mentioned above .

There is thus a hitherto unsatisfied need for a new drill dust collector by means of which it is possible to remedy the above-mentioned inconveniences.

A first aspect according to the invention is to provide a drill dust collector of the kind mentioned in the opening paragraph, in which drill dust made during drilling of a hole can be collected without spilling.

A second aspect according to the invention is to provide a drill dust collector of the kind mentioned in the opening paragraph, which can be detachably stuck to a wall having an even relatively rough surface and remain stuck during drilling of a hole.

A third aspect according to the invention is to provide a drill dust collector of the kind mentioned in the opening paragraph, which can be produced as a throwaway and therefore can be discarded with its content of drill dust without the drill dust escaping to the surroundings.

The novel and unique feature according to the invention, whereby this is achieved, is the fact that the two sheets are connected along a continuously extending part of their edges, and that a fold line is formed in the second sheet, extending between two points on the free edge of the second sheet.

The fold line and the free edge of the second sheet advantageously define a flap which can be made to abut against the side of the first sheet facing the second sheet by folding about the fold line to force two sheets apart and in this way open and distend the drill dust collector to a three- dimensional collecting container in a very simple way.

This effect is especially obtained if the spacing of the fold line to the free edge of the second sheet is increasing in the area between the two points on which the fold line is intersecting this edge in order to thereby give the flap an extent that can open the drill dust collector sufficiently to collect and contain all the drill dust made during the drilling of a hole.

If the fold line is curved, the flap will advantageously distend the dust collector the most in the area where the radius of the curve is the greatest and the least in the area where the radius is the smallest in order to thereby strengthen the folded dust collector. The dust collector can simply be provided with a stiffness of shape which will be maintained during drilling in spite of the fact that the weight of the dust collector will increase as it is filled with drill dust. The flap will furthermore serve as an advantageous cover over the opening of the dust collector and contribute to preventing the dust from leaving the dust collector during both drilling of the hole, removal of the dust collector from the wall, and final discarding of the dust collector.

In a preferred embodiment, the free, edge of the second sheet can furthermore be extending in a second curve facing mainly oppositely of the curve of the fold line between the two intersection points in order to thereby provide a flap having a geometry shaped mainly as convex lens which advantageously contribute in forming the first sheet during distension for use as dust collector and which increases the stiffness of shape of the dust collector in the position of use during drilling of a hole.

If the free edge of the second sheet is extending both between the two intersection points, and a distance on the other side of these intersection points, the flap can open the dust collector without the connection between the continuously connected sheets breaking. Furthermore, the flap can advantageously be bent a short distance into and down into the open dust collector to function as a slide to the drill dust down into the dust collector as well.

According to a preferred embodiment, the dust collector can consist of two sheets, the basic forms of which are mainly congruent. This embodiment can be produced especially inexpensive by means of a minimum of templates and tools.

The first sheet can preferably be designed with a first cut in its free end edge and the area between the fold line and the free edge of the second sheet, serving as flap, can advantageously be designed with a second opposite cut between the two intersection points .

The cut in the flap can advantageously be serving for ensuring that the drill dust landing on the flap during drilling can pass freely down into the dust collector and the first cut in the first sheet can advantageously be used for defining a definition of the area where a hole is required.

In an especially advantageous way, the outer side of the first: sheet can, at least in an area at the first cut, be applied with an adhesive of a kind that will allow the dust collector to be detachably stuck on the wall during drilling in order to thereby effectively prevent the drill from coming into contact with the dust collector during drilling.

In a preferred embodiment, the dust collector can also be symmetric about a bisecting line through the cut. The content of drill dust of the dust collector stuck on the wall in a detachable manner can advantageously be spread in the dust collector without any risk of the dust collector unintentionally falling down off the wall on which it is stuck and in which a hole is to be drilled.

In the preferred embodiment of a dust collector according to the present invention, the dust collector can be made of a plane unfolded blank of a thin, bendable, environmentally sound, and inexpensive material such as e.g. paper, cardboard, foil, or plastic.

In the following, only an example of an embodiment of a dust collector according to the invention is described with reference to the accompanying drawing, in which

Fig. 1 shows a first sheet for a first embodiment of a drill dust collector according to the present invention, seen from the side of the first sheet forming the inside face of the dust collector,

Fig. 2 shows a second sheet for a first embodiment of a drill dust collector according to the invention,

Fig. 3 shows a first plane unfolded blank for folding of a second embodiment of a drill dust collector according to the present invention, Fig. 4 is a perspective view of the plane unfolded blank in fig. 3 folded into its two-dimensional state before use for collecting drill dust,

Fig. 5 is the view in fig. 4 but in a state ready and distended for drilling a hole in a wall,

Fig. 6 is the view in fig. 5 during drilling of a hole,

Fig. 7 shows a second plane unfolded blank for folding of a third embodiment of a drill dust collector according to the present invention, and

Fig. 8 shows a third plane unfolded blank for folding of a fourth embodiment of a drill dust collector according to the present invention.

In the first embodiment according to the present invention, a dust collector is made of the first sheet 1 in fig. 1 and the second sheet 9 in fig. 2.

In fig. 1, the first sheet 1 is seen from the side forming the inside face of the dust collector in its assembled state.

The first sheet 1 has a curved, free edge 2 having a first cut 3. This cut 3 is, on the outer side of the first sheet 1, surrounded by section 2 applied by means of adhesive. The free edge 2 of the sheet 1 is extending into opposite, converging side edges 5a, 5b, from which two flaps 7a, 7b are issuing in this case via fold lines 6a, βb . The side edges 5a, 5b are connected by the bottom edge 8 of the first sheet at their converging ends .

The first sheet 1 is joined by means of e.g. adhesive applied both on the flaps 7a, 7b and an area along the end edge 8 to the second congruent sheet 9 in fig. 2, the flaps 5a, 5b during this being folded in direction towards the bisecting line A. The second sheet 9 has a free edge 10 with a second cut 11. The free edge 10 is extending into opposite and, in the case shown, converging side edges 12a, 12b connected by the bottom edge 13 of the second sheet 9.

The second sheet 9 has a fold line 14 extending from the intersection point 15a between the free edge 10 and the side edge 12a in a curve to the intersection point 15b between the free edge 10 and the side edge 12b. The curved fold line 14 and the free edge 10 of the second sheet 9 are together defining a flap 16 for strengthening, opening and covering a dust collector assembled and formed by the two sheets 1 ; 9.

Upon being glued together, the sheets described in figs. 1 and 2 constitute a first embodiment of a dust collector according to the invention. The first sheet 1 is here designed with flaps 5a5b for application of the adhesive used when gluing the side edges 5a, 5b; 12a, 12b together. In an alternative and very inexpensive embodiment, the adhesive is applied directly along the side edges and the bottom edge on one of the sections .

The flaps 5a, 5b can furthermore be provided on any of the two sheets 1;9 and have the advantage of contributing to sealing the dust collector. The flaps are either placed inside the drill dust collector so that they cannot be seen when the dust collector is glued together or can be folded to adhere on the outside of the opposite sheet without flaps. Alternatively, each sheet can each have a flap.

Fig. 3 shows a first plane unfolded blank 17 for a dust collector according to a second embodiment of the invention. This unfolded blank 17 is a modification of the first embodiment of figs. 1 and 2, and like parts are indicated by the same reference numerals . In this plane unfolded blank 17, which is symmetrical about a bisecting line A, the first sheet is formed by a first field 18 and the second sheet is formed by a congruent second field 19, the second fold line 20 dividing the plane unfolded blank 17 into the first field 18 and the second field 19.

The first field 18 has a free edge 2 extending into the side edges 5a, 5b to intersect the second fold line 20 in the intersection points 21; 22. The first field 18 is applied withan adhesive in a section 4 of the field 18 around the first cut 3.

The section 4 is shown defined by a set of converging shaping lines 23,23b, and at least a part of this defined portion is covered by adhesive on the outside of the field 18. The shaping lines 23a, 23b are serving for flexibly yielding to be able to shape and distend the dust collector as the stuck dust collector is filled with drill dust so that the dust collector is not pulled free unintentionally from its detachable, adherent hold on the wall for hanging during this.

The second field 19 has a free edge 10 with a second cut 11 and a curved first fold line 14 extending between two points 15a, 15b on the continuous edge 12a, 16, 12b of the second section 19 for defining a third section 16 constituting the section of the second field 19 forming the flap 16. The flap 16 is thus defined by the first fold line 14 and the edge between the two points 15a, 15b where the first fold line 14 is intersecting the edge 12a, 16a, 12b of the field 19. The free edge 10 of the second field 19 is extending into the side edges 12a, 12b to intersect the second fold line 20 in the intersection points 21; 22.

The second field 19 has flaps 24a, 24b issuing from the second fold line 20 and extending via a first third fold line 25a along both the side edge 12a in the area from the point 21 to a distance from the intersection point 15a, and via a second third fold line 25b along the side edge 12b in the area from the point 22 to a distance from the intersection point 15b.

The perspective view of the drill dust collector 26 in fig. 4 is seen from the second sheet or field in the figure. The thus shown drill dust collector 26 can be obtained by assembling, for example by adhesion along the edges, by the sheets 1 ; 9 in figs . 1 and 2 or by folding and assembling the plane unfolded blank 17 in fig. 3.

For clarity, it is however assumed that it is the plane unfolded blank 17 in fig. 3 that is used for forming the dust collector 26.

The flaps 24a, 24b applied with a not shown adhesive on the first field 18 is folded in towards the longitudinal bisecting line A of the plane unfolded blank 17 via the fold lines 25a, 25b. Furthermore, the second -field 19 is folded in direction towards the first field 18 via the fold line 20 to form the dust collector 26 by joining the side edges 5a, 5b of this field 18 with the flaps 24a, 24b of the second field.

Fig. 5 shows the dust collector 26 in fig. 4 in distended state for use at dust collection during drilling of a hole as shown in fig. 6. The flap 16 is folded in direction towards the first field 18 to form a slide or funnel to the drill dust 29. As the flaps 24a, 24b are not extending over the entire extent of the side edges 5a, 5b; 12a, 12b, a piece of said side edges 5a, 5b; 12a, 12b will not be joined to thus form the slides 27a, 27b. The slides advantageously contribute to ensuring that the dust collector is not torn or breaks when the part of the second field 19 comprising the flap 16 and the intersection points 15a, 15b is brought along a distance into the dust collector 26 when the flap 16 is folded in direction towards the first field 18.

This part of the free edge of the second field, which constitutes the slide as mentioned, advantageously contributes to strengthen the distended and opened dust collector. The curved free edge of the second sheet provides a transverse strengthening and the part of the free edge of the second sheet forming one side of the slide provides a cooperating, mainly longitudinal strengthening so that the distended dust collector is both robust and dimensionally stable in the position of use during dust collection.

In fig. 6, the dust collector 26 is shown hanging on a. wall 28 of which only a fragment is shown. By means of the section 4 coated with adhesive, the dust collector 26 is hanged in so close contact with the wall 28 that no drill dust 29 can pass down along the wall 28 behind the dust collector 26, the first cut 3 being kept in adherent contact with the wall 29 by means of the section 4 and close-fittingly defining the spot 30 where the hole 31 is to be drilled by means of a drill bit 32 in e.g. a drill 33.

When the hole has been drilled completely, the dust collector can easily be taken down from the wall on which it is detachably hanged and possible be used for drilling a new hole if desired. When the dust collector is completely full with drill dust, it is discarded with its content. Possibly, the adherent section is used for, on folding of the dust collector, adhesively sealing this collector before it is discarded.

The embodiment in fig. 7 of a second plane unfolded blank 34 is only a modification of the embodiment in fig. 3, and like parts are indicated by the same reference numerals. The only difference of this plane unfolded blank 34 is that the fields 18,19 have parallel side edges 35a, 35b; 36a, 36b instead of converging side edges, the flaps 5a, 5b now only extending from the side edges 35a, 35b. This embodiment can be punched or cut by means of most known envelope production tools without these tools necessarily having to undergo substantial modifications.

The embodiment of a third plane unfolded blank 37 in fig. 8 is a modification of the second embodiment in fig. 7 of a plane unfolded blank, and like parts are indicated by the same reference numerals.

The third plane unfolded blank 37 is here shown having uniformly angular, trapezoidal flaps 38a, 38b. This geometric shape of a flap 38a, 38b takes up less place in the folded dust collector 26 and is therefore especially preferred.

Before use, a dust collector will have the two-dimensional shape in fig. 4 and appear as a flat, light, portable envelope which can be packed and stored in large numbers without taking up much room in any practical place. One or more dust collectors can therefore easily be stored together with the drill in its box, in a drawer or any other kind of storage container and thus always be at hand when it is to be used.

In the figure, the section 4 is shown with an exemplary defining, but the adhesive can for example also cover the entire back of the first sheet, be applied in spots or lines, or can be a double coated flap, which is included as extras, within the scope of the invention. Such a flap makes it possible to apply the adhesive on exactly the spot on the dust collector which is best suited for the concrete situations and needs at any time. In this simple way, extra binding power can be provided for use on especially rough or in other ways difficult places. The section 4 can furthermore be covered by a protection film for preventing particles getting stuck on the field during storing of the dust collector.

Within the scope of the invention, any known adhesive can be used that has a sufficiently great binding and adhesive power for supporting a full dust collector and that can be hanged up on and be detached from the wall without damaging said wall. Such adhesives are commercially available.

Furthermore, the second field can advantageously be used for printing of a message such as an advert or user instructions.

The dust collector can be made of relatively rigid material such as paperboard and cardboard but can also be made of inexpensive materials such as plain paper, for example recycled paper which does not have any great stiffness of shape in itself, the particular geometric shape of the dust collector providing the necessary stiffness of shape. One or more smaller cuts or notches can possibly be provided along the free edge of a sheet or field in order to facilitate unfolded blank for use at drilling.

Claims

Patent claims

1. A dust collector (26) for detachably placing at and collecting dust (29) from a hole (31) drilled in a mainly vertical wall (28) and comprising a first (1;18) and second (9; 19) relatively thin sheet facing the wall (28) and away from said wall respectively upon use, characterised in that the two sheets (1,9,-18, 19) are connected along a continuously extending part of their edges (5a, 5b, 8 ; 12a, 12b, 13 ; 35a, 35b; 36a, 36b) , and that a fold line (14) is made in the second sheet (9;19), extending between two points (15a, 15b) on its free edge (10) .

2. A dust collector (26) according to claim 1, characterised in that the spacing of the fold line (14) from the free edge (10) of the second sheet (9,-19) is increasing in the area between the two points (15a, 15b) where the fold line (14) is intersecting this edge (10) .

3. A dust collector (26) according to claim 1 or 2, characterised in that the fold line (14) is curved.

4. A dust collector (26) according to claim 2 or 3, characterised in that the free edge (10) of the second sheet (9; 19) is extending both between the two intersection points (15a, 15b) and a distance on the other side of these intersection points.

5. A dust collector according to any of the claims 1 - 4, characterised in that the free edge (10) of the second sheet (9,-19) is extending mainly in a second curve facing in opposite direction of the curve of the fold line (14) between the two intersection points (15a, 15b).

6. A dust collector according to any of the claims 1 - 4, characterised in that the free edge (2) of the first sheet (1;18) has a first cut (3), and - that a diametrically opposite second cut (11) is made in the area between the fold line (14) and the free edge (10) of the second sheet (9,-19) between the two intersection points (15a, 15b).

7. A dust collector (26) according to any of the claims 1 - 6, characterised in that the two sheets (1,9,-18, 19) of the dust collector (26) are mainly congruent.

8. A dust collector (26) according to claim 6 or 7, characterised in that the dust collector (26) is symmetrical about a bisecting line A through the cut (3;11) .

9. A dust collector (26) according to claim 6, 7 or 8, characterised in that the outer side of the first sheet

(1;18) is applied, at least in a section (4) at the first cut (3), with an adhesive of the kind permitting the dust collector (26) to be detachably stuck on the wall (28) .

10. A dust collector (26) according to any of the claims 1 - 9, characterised in that the dust collector (26) is made of an unfolded blank (17,-34,-37) comprising a first (18) and second field (19), a preferably curved first fold line (14) extending between two points (15a, 15b) on the edge of the second field (19) , a second fold line (20) between the first (18) and second field (19) , a third field (16) constituting a portion of the second field (19) and defined by the first fold line

(14) and the edge (10) between the two points (15a, 15b) where the first fold line (14) is intersecting the edge of the field (19), a flap (7a, 7b; 38a, 38b) on either side of the first (18) or second field (19) and issuing from the second fold line (20) and extending a distance along the side of the field, and a third fold line ( 6a, 6b; 35a, 35b) between each flap (5a, 5b; 38a, 38b) and the associated field (1;19).

11. A dust collector (26) according to any of the claims 1

- 9, characterised in that the first (18) and second field (19) are mainly congruent.

12. A dust collector (26) according to any of the claims 1 - 9, characterised in that the first sheet (1) of the unfolded blank (17; 34; 37) furthermore comprises a section (4) defined by shaping lines (23a, 23b) for application of an adhesive.

13. A dust collector (26) according to any of the claims 1

- 10, characterised in that the dust collector is made of a thin, bendable, environmentally sound, and inexpensive material such as e.g. paper, cardboard, foil, or plastic.