WO1995011618A1 - Cleaning tool particularly for cleaning wall surfaces and the like - Google Patents
Cleaning tool particularly for cleaning wall surfaces and the like Download PDFInfo
- Publication number
- WO1995011618A1 WO1995011618A1 PCT/EP1994/003516 EP9403516W WO9511618A1 WO 1995011618 A1 WO1995011618 A1 WO 1995011618A1 EP 9403516 W EP9403516 W EP 9403516W WO 9511618 A1 WO9511618 A1 WO 9511618A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cleaning
- tool according
- cleaning tool
- elastomeric material
- anchored
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L13/02—Scraping
Definitions
- the present invention relates to a cleaning tool particularly for dry cleaning smooth or rough wall surfaces, for example plastered, putty knife-finished, wallpapered or fabric-covered wall surfaces, in order to eliminate dirt, smoke and effects of weather from these surfaces.
- a typical example is constituted by the smoke or dust formed by radiators for room heating.
- the tool according to the invention can be used for cleaning internal and external surfaces of pieces of furniture and other furnishings, provided that some simple techniques, better described hereinafter, are used after treatment.
- the aim of the present invention is to overcome the drawbacks described above by providing a tool that is constructively very simple and allows in particular to clean wall surfaces with a minimal expense and with excellent results.
- a cleaning tool for cleaning walls and the like characterized in that it includes at least one elongated cleaning part made of relatively flexible elastomeric material which has a substantially cusp-shaped active portion which acts by rubbing on the surface to be cleaned.
- the cleaning part is constituted by a substantially prism-like monolithic body with a tapered active portion and a wider grip portion.
- the tool includes multiple cleaning parts that protrude from a flat support which has a substantially circular or polygonal shape and can be anchored to the orbital head or to the chuck of a motorized appliance.
- the tool according to the invention substantially acts like an eraser for removing pencil marks on a drawing sheet, but is conveniently applied to the specific sector of wall surfaces and the like and achieves the advantage of an effective cleaning which can be performed by unskilled personnel with very low costs and in a very short time.
- Figure 1 is a perspective view of a first manual embodiment of a cleaning tool according to the invention
- Figure 2 is a transverse sectional view, taken along the plane II-II of Figure 1;
- Figure 3 is a schematic view of a motorized appliance to which a tool according to the invention, in a second embodiment, is applied;
- Figure 4 is an enlarged-scale side view of the tool of Figure 3;
- Figure 5 is a front view of the tool of Figure 4;
- Figure 6 is a front view of a third embodiment of the tool according to the invention.
- Figure 7 is a sectional view, taken along the plane VII- VII, of the tool of Figure 6;
- Figure 8 is a front view of a fourth embodiment of the tool according to the invention.
- Figure 9 is a schematic front view of a fifth embodiment of the tool according to the invention, applied to an orbital sander;
- Figure 10 is a sectional view, taken along a plane X-X of Figure 8.
- Figure 11 is a front view of a sixth embodiment of a tool according to the invention.
- Figure 12 is a sectional view, taken along the plane XII- XII, of Figure 11, of the tool mounted on a backing pad that is rigidly coupled to the chuck of a drill;
- Figure 13 is a sectional view, taken along a plane XIII- XIII of Figure 11, of a detail of the tool.
- this figure illustrates a tool according to the invention in a first manual embodiment, generally designated by the reference numeral 1, which includes a single cleaning part 2 which is shaped like an elongated prism with an upper tapered cusp-like portion 3 and a wider lower portion 4.
- the tapered or cusp-shaped upper portion 3 is meant to rub on the surface to be cleaned and advantageously has a sharp or slightly rounded edge 5 and an angle of approximately 45° at the vertex ⁇ .
- the angle a can vary between 30° and 120° without thereby abandoning the scope of the invention.
- the wider portion 4, which is to be gripped by the user, can have a lightening hole 6, optionally stiffened by a core 7 made of cardboard or other semirigid material.
- the cleaning part is made monolithically of an elastomeric material constituted by a uniform mix of natural rubber (caoutchouc) or synthetic rubber (silicone, fluorosilicone, polyurethane, chloroprene rubber, etc.) in the pure state or slightly filled with abrasive materials such as pumice or quartz powder.
- the hardness of the mix can be chosen between 20 and 100 Shore A and is preferably between 30 and 50 Shore A.
- Figure 3 shows a tool 10 which is formed by a rigid or semirigid disk-like support 11 applied for example to the plate of an orbital sander L, shown in dashed lines in the drawing.
- Anchoring can occur by virtue of a "Velcro" type coupling which allows quick positioning on the plate of the sander.
- Multiple cusp-shaped cleaning parts 12 with a longitudinal cleaning edge 13 are anchored to the support 11 for example by gluing. During the rotation of the sander, these parts rub against the surface to be cleaned, forcefully removing the dirt particles.
- the arrangement of the cleaning parts 12 is substantially radial with respect to the axis of the support 11, with a constant angular spacing and a variable distance from the center.
- Figs. 6-7 illustrate a tool 20 which includes a disk- shaped support 21 to which cleaning parts 22 are anchored; these cleaning parts are elongated and radiused at the ends which form an angle ⁇ with respect to the radial direction.
- Through holes 23 are also formed on the disk 21 and are connected to suction channels which are formed on the head of the sander and are not shown in the drawings in order to aspirate the removed impurities.
- the cleaning parts 22 have a substantially rectangular transverse cross-section with at least one sharp edge 24 that rubs against the surface to be cleaned.
- the disk 21 also has a sharp corner 25 along its rim, for cleaning large areas.
- the parts 22 are monolithic with the supporting disk 2 and are made of the same uniform elastomeric material.
- the embodiment shown in Fig. 8 is particularly suitable for applications on the chuck of a simple drill or angle cutter.
- the tool 30 is formed by a disk-shaped support 31 with a series of cleaning parts 32 which are lobate and spiral-shaped to facilitate outward expulsion of impurities and with a central hole 33 for fixing with a screw or with a shank to the chuck of the drill or the like.
- Figs. 9-10 schematically show a tool 40 which includes a support 41 which has a substantially rectangular plan shape and can be anchored to the oscillating plate of an orbital sander with any appropriate means and has cleaning parts 42 on its outer face.
- the cleaning parts 42 can have a triangular transverse cross-section, with a sharp corner 43, and can be made separately of a rubber ⁇ like material with appropriate hardness.
- the supporting plate 41 can also be made of a material that is different from that of the cleaning parts 12, for example soft or semirigid plastic, and the parts 42 can be embedded in the plate 41 and retained in it by virtue of lateral protrusions 44.
- the tool 50 shown in Fig. 11 is particularly suitable for application on a drill with a self-centering chuck, and includes a flat support 51 which has a circular plan and from which cleaning parts 52 protrude. These cleaning parts have a tapering prism-like elongated shape, a triangular cross-section that decreases towards the center, and a sharp or slightly radiused corner 53. The parts are orientated substantially radially, and their corners 54 form an angle ⁇ with respect to the radii.
- the rim of the support 51 has a plate 54 from which a recessed edge 55 extends radially towards the center. This inward-folded edge engages a backing pad P which is retained by the chuck M of a drill, not shown in the drawings.
- a pad 56 made of sponge-like material can be interposed between the support 51 and the inward- folded edge 55 to act as shock absorber.
- the tool according to the invention in its manual embodiment as well as in its motorized embodiment, is susceptible of numerous modifications and variations, all of which are within the scope of the inventive concept expressed in the accompanying claims.
- the tool can be constituted by a substantially cone-shaped cleaning part in which the active upper portion forms the cusp of the tool which is suitable to clean the bottom of corner- like surfaces.
Landscapes
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
Abstract
A cleaning tool for dry cleaning walls and the like includes at least one elongated cleaning part (2) made of relatively flexible elastomeric material which has a substantially cusp-shaped active portion (3) that acts by rubbing on the surface to be cleaned. The elastomeric material is a mix of natural or synthetic rubbers, in substantially pure state, or slightly filled with abrasives such as pumice or quartz, with a hardness between 20 and 100 Shore A and preferably between 30 and 50 Shore A. In a manual embodiment, the manual cleaning part includes a substantially prism-shaped monolithic body with an active tapered portion and a wider grip portion. In a motorized embodiment, the tool includes multiple cleaning parts which protrude from a substantially circular or polygonal flat support which can be anchored to the orbital head or to the chuck of a motorized appliance.
Description
CLEANING TOOL PARTICULARLY FOR CLEANING WALL SURFACES AND THE LIKE
The present invention relates to a cleaning tool particularly for dry cleaning smooth or rough wall surfaces, for example plastered, putty knife-finished, wallpapered or fabric-covered wall surfaces, in order to eliminate dirt, smoke and effects of weather from these surfaces. A typical example is constituted by the smoke or dust formed by radiators for room heating.
The tool according to the invention can be used for cleaning internal and external surfaces of pieces of furniture and other furnishings, provided that some simple techniques, better described hereinafter, are used after treatment.
It is known that in order to remove dirt from wall surfaces or the like it is possible to use a mechanical means, such as manually- or mechanically-applied abrasive papers which are suitable to remove a thin surface layer before applying a new one. This operation in turn considerably dirties the rooms and often becomes unfeasible in the case of putty- knife or plastering-trowel finishes.
In the case of wal l s covered with wal lpaper , be f ore applying the new layer the old paper must be stripped off manually, with considerable difficulty and with results that are not always satisfactory.
In both cases these operations must be performed by specialized personnel with considerable labor costs. In order to reduce these costs, there is a tendency to postpone the restoration work as long as possible, worsening the hygienic conditions and comfort of living spaces.
Currently no tools are known that allow to clean walls with a simple and effective means and without having to cope with considerable labor expenses.
The aim of the present invention is to overcome the drawbacks described above by providing a tool that is constructively very simple and allows in particular to clean wall surfaces with a minimal expense and with excellent results.
This aim is achieved by a cleaning tool for cleaning walls and the like, characterized in that it includes at least one elongated cleaning part made of relatively flexible elastomeric material which has a substantially cusp-shaped active portion which acts by rubbing on the surface to be cleaned.
In a first manual-type embodiment, the cleaning part is constituted by a substantially prism-like monolithic body with a tapered active portion and a wider grip portion.
In a second mechanical-type embodiment, the tool includes multiple cleaning parts that protrude from a flat support
which has a substantially circular or polygonal shape and can be anchored to the orbital head or to the chuck of a motorized appliance.
The tool according to the invention substantially acts like an eraser for removing pencil marks on a drawing sheet, but is conveniently applied to the specific sector of wall surfaces and the like and achieves the advantage of an effective cleaning which can be performed by unskilled personnel with very low costs and in a very short time.
Further characteristics and advantages will become apparent from the description of some preferred but not exclusive embodiments of the cleaning tool according to the invention, with reference to the accompanying drawings, wherein:
Figure 1 is a perspective view of a first manual embodiment of a cleaning tool according to the invention;
Figure 2 is a transverse sectional view, taken along the plane II-II of Figure 1;
Figure 3 is a schematic view of a motorized appliance to which a tool according to the invention, in a second embodiment, is applied;
Figure 4 is an enlarged-scale side view of the tool of Figure 3;
Figure 5 is a front view of the tool of Figure 4;
Figure 6 is a front view of a third embodiment of the tool according to the invention;
Figure 7 is a sectional view, taken along the plane VII- VII, of the tool of Figure 6;
Figure 8 is a front view of a fourth embodiment of the tool according to the invention;
Figure 9 is a schematic front view of a fifth embodiment of the tool according to the invention, applied to an orbital sander;
Figure 10 is a sectional view, taken along a plane X-X of Figure 8;
Figure 11 is a front view of a sixth embodiment of a tool according to the invention;
Figure 12 is a sectional view, taken along the plane XII- XII, of Figure 11, of the tool mounted on a backing pad that is rigidly coupled to the chuck of a drill;
Figure 13 is a sectional view, taken along a plane XIII- XIII of Figure 11, of a detail of the tool.
With reference to Figure 1, this figure illustrates a tool according to the invention in a first manual embodiment,
generally designated by the reference numeral 1, which includes a single cleaning part 2 which is shaped like an elongated prism with an upper tapered cusp-like portion 3 and a wider lower portion 4.
The tapered or cusp-shaped upper portion 3 is meant to rub on the surface to be cleaned and advantageously has a sharp or slightly rounded edge 5 and an angle of approximately 45° at the vertex α. The angle a can vary between 30° and 120° without thereby abandoning the scope of the invention.
The wider portion 4, which is to be gripped by the user, can have a lightening hole 6, optionally stiffened by a core 7 made of cardboard or other semirigid material.
The cleaning part is made monolithically of an elastomeric material constituted by a uniform mix of natural rubber (caoutchouc) or synthetic rubber (silicone, fluorosilicone, polyurethane, chloroprene rubber, etc.) in the pure state or slightly filled with abrasive materials such as pumice or quartz powder. The hardness of the mix can be chosen between 20 and 100 Shore A and is preferably between 30 and 50 Shore A.
Figure 3 shows a tool 10 which is formed by a rigid or semirigid disk-like support 11 applied for example to the plate of an orbital sander L, shown in dashed lines in the drawing. Anchoring can occur by virtue of a "Velcro" type coupling which allows quick positioning on the plate of the sander.
Multiple cusp-shaped cleaning parts 12 with a longitudinal cleaning edge 13 are anchored to the support 11 for example by gluing. During the rotation of the sander, these parts rub against the surface to be cleaned, forcefully removing the dirt particles. The arrangement of the cleaning parts 12 is substantially radial with respect to the axis of the support 11, with a constant angular spacing and a variable distance from the center.
Figs. 6-7 illustrate a tool 20 which includes a disk- shaped support 21 to which cleaning parts 22 are anchored; these cleaning parts are elongated and radiused at the ends which form an angle β with respect to the radial direction. Through holes 23 are also formed on the disk 21 and are connected to suction channels which are formed on the head of the sander and are not shown in the drawings in order to aspirate the removed impurities. The cleaning parts 22 have a substantially rectangular transverse cross-section with at least one sharp edge 24 that rubs against the surface to be cleaned. The disk 21 also has a sharp corner 25 along its rim, for cleaning large areas. In this case the parts 22 are monolithic with the supporting disk 2 and are made of the same uniform elastomeric material.
The embodiment shown in Fig. 8 is particularly suitable for applications on the chuck of a simple drill or angle cutter. The tool 30 is formed by a disk-shaped support 31 with a series of cleaning parts 32 which are lobate and spiral-shaped to facilitate outward expulsion of impurities
and with a central hole 33 for fixing with a screw or with a shank to the chuck of the drill or the like.
Figs. 9-10 schematically show a tool 40 which includes a support 41 which has a substantially rectangular plan shape and can be anchored to the oscillating plate of an orbital sander with any appropriate means and has cleaning parts 42 on its outer face. As shown in Fig. 10, the cleaning parts 42 can have a triangular transverse cross-section, with a sharp corner 43, and can be made separately of a rubber¬ like material with appropriate hardness. The supporting plate 41 can also be made of a material that is different from that of the cleaning parts 12, for example soft or semirigid plastic, and the parts 42 can be embedded in the plate 41 and retained in it by virtue of lateral protrusions 44.
The tool 50 shown in Fig. 11 is particularly suitable for application on a drill with a self-centering chuck, and includes a flat support 51 which has a circular plan and from which cleaning parts 52 protrude. These cleaning parts have a tapering prism-like elongated shape, a triangular cross-section that decreases towards the center, and a sharp or slightly radiused corner 53. The parts are orientated substantially radially, and their corners 54 form an angle δ with respect to the radii.
The rim of the support 51 has a plate 54 from which a recessed edge 55 extends radially towards the center. This inward-folded edge engages a backing pad P which is
retained by the chuck M of a drill, not shown in the drawings. In order to dampen any vibrations and provide smoother operation, a pad 56 made of sponge-like material can be interposed between the support 51 and the inward- folded edge 55 to act as shock absorber.
The tool according to the invention, in its manual embodiment as well as in its motorized embodiment, is susceptible of numerous modifications and variations, all of which are within the scope of the inventive concept expressed in the accompanying claims. For example, the tool can be constituted by a substantially cone-shaped cleaning part in which the active upper portion forms the cusp of the tool which is suitable to clean the bottom of corner- like surfaces.
Claims
1. Cleaning tool particularly for dry cleaning walls and the like, characterized in that it comprises at least one elongated cleaning part made of relatively flexible elastomeric material which has a substantially cusp-shaped active portion that acts by rubbing on the surface to be cleaned.
2. Cleaning tool according to claim 1, characterized in that said elastomeric material is a mix of natural or synthetic rubbers, in the substantially pure state or slightly filled with abrasives such as pumice or quartz.
3. Cleaning tool according to claim 1, characterized in that said mix of natural or synthetic rubbers is chosen with a hardness between 20 and 100 Shore A and preferably between 30 and 50 Shore A.
4. Cleaning tool according to claim 1, characterized in that said substantially cusp-like active portion has a longitudinal edge which is sharp or slightly radiused.
5. Cleaning tool according to claim 4, characterized in that said cleaning part has a cross-section that is substantially shaped like a square or triangle in which one corner forms said longitudinal edge.
6. Cleaning tool according to claim 5, characterized in that said cleaning part is constituted by a monolithic body which is substantially shaped like a prism with a tapered active portion and a wider manual grip portion.
7. Cleaning tool according to claim 6, characterized in that said wider portion has a lightening through hole which is substantially parallel to said longitudinal edge and is optionally reinforced by a cylindrical core.
8. Cleaning tool according to claim 3, characterized in that it comprises multiple cleaning parts which protrude from a substantially circular or polygonal flat support which can be anchored to the orbital head or to the chuck of a motorized appliance.
9. Cleaning tool according to claim 8, characterized in that said cleaning parts extend substantially radially and in angular positions which are substantially equidistant with respect to the axis of said rotating or orbital head.
10. Cleaning tool according to claim 8, characterized in that said flat support is made of a rigid or semirigid material that is different from the material of said cleaning parts.
11. Cleaning tool according to claim 8, characterized in that said flat support is formed monolithically with said cleaning parts and is made of the same elastomeric material.
12.. Cleaning tool according to claims 10 or 11, characterized in that said supporting plate are anchored to -li¬
the head of a said motorized appliance by a "Velcro" type coupling.
13. Cleaning tool according to claims 10 or 11, characterized in that said supporting plate is anchored to the mandrel of a motorized appliance by an inward-folded edge which is spaced from said plate and can be coupled to a flange that is rigidly coupled to said chuck, with the optional interposition of a pad made of sponge-like material.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITVI930086 IT231915Y1 (en) | 1993-10-26 | 1993-10-26 | DISC PROVIDED WITH INTERVALED RUBBER SECTORS, TO CLEAN SURFACES IN GENERAL, AS AN ACCESSORY APPLICABLE TO ROTARY SANDERS |
ITVI93U000086 | 1993-10-26 | ||
ITVI930087 IT231916Y1 (en) | 1993-10-26 | 1993-10-26 | MANUAL TOOL PROVIDED WITH AN INTERCHANGEABLE RUBBER ELEMENT, TO CLEAN THE SURFACES OF MASONRY IN GENERAL, IN HOUSES OR |
ITVI93U000087 | 1993-10-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995011618A1 true WO1995011618A1 (en) | 1995-05-04 |
Family
ID=26332585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/003516 WO1995011618A1 (en) | 1993-10-26 | 1994-10-26 | Cleaning tool particularly for cleaning wall surfaces and the like |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO1995011618A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29708611U1 (en) * | 1997-05-15 | 1997-07-17 | Becker, Lars, Dipl.-Ing., 95326 Kulmbach | Cleaning device |
USD1020155S1 (en) * | 2021-07-26 | 2024-03-26 | Anwiner Technology International Inc | Cleaning device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB313950A (en) * | 1928-06-20 | 1930-01-09 | Paris & Du Rhone | Improvements in devices for scraping or abrading wood flooring or like surfaces |
FR1227069A (en) * | 1958-06-13 | 1960-08-18 | Minnesota Mining & Mfg | Drive pads for flexible fluid permeable abrasive linings |
US4504283A (en) * | 1982-07-22 | 1985-03-12 | Superior Finishers, Incorporated | Cushioned abrasive articles, and method of manufacture |
US4974369A (en) * | 1990-06-28 | 1990-12-04 | William Dixon | Two-dimensionally grooved sanding pad |
WO1991011349A2 (en) * | 1990-01-29 | 1991-08-08 | Alcan International Limited | Improved wiper blade and method of making same |
-
1994
- 1994-10-26 WO PCT/EP1994/003516 patent/WO1995011618A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB313950A (en) * | 1928-06-20 | 1930-01-09 | Paris & Du Rhone | Improvements in devices for scraping or abrading wood flooring or like surfaces |
FR1227069A (en) * | 1958-06-13 | 1960-08-18 | Minnesota Mining & Mfg | Drive pads for flexible fluid permeable abrasive linings |
US4504283A (en) * | 1982-07-22 | 1985-03-12 | Superior Finishers, Incorporated | Cushioned abrasive articles, and method of manufacture |
WO1991011349A2 (en) * | 1990-01-29 | 1991-08-08 | Alcan International Limited | Improved wiper blade and method of making same |
US4974369A (en) * | 1990-06-28 | 1990-12-04 | William Dixon | Two-dimensionally grooved sanding pad |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29708611U1 (en) * | 1997-05-15 | 1997-07-17 | Becker, Lars, Dipl.-Ing., 95326 Kulmbach | Cleaning device |
USD1020155S1 (en) * | 2021-07-26 | 2024-03-26 | Anwiner Technology International Inc | Cleaning device |
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