CA2020914A1 - Method of and means for treating a floor - Google Patents
Method of and means for treating a floorInfo
- Publication number
- CA2020914A1 CA2020914A1 CA 2020914 CA2020914A CA2020914A1 CA 2020914 A1 CA2020914 A1 CA 2020914A1 CA 2020914 CA2020914 CA 2020914 CA 2020914 A CA2020914 A CA 2020914A CA 2020914 A1 CA2020914 A1 CA 2020914A1
- Authority
- CA
- Canada
- Prior art keywords
- pad
- abrasive
- working surface
- opening
- relatively
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
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
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4036—Parts or details of the surface treating tools
- A47L11/4038—Disk shaped surface treating tools
-
- 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
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/02—Floor surfacing or polishing machines
- A47L11/10—Floor surfacing or polishing machines motor-driven
- A47L11/14—Floor surfacing or polishing machines motor-driven with rotating tools
- A47L11/16—Floor surfacing or polishing machines motor-driven with rotating tools the tools being disc brushes
- A47L11/164—Parts or details of the brushing tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
ABSTRACT
Title: Method of and means for treating a floor A pad for use on a floor-polishing machine comprises a circular, non-abrasive body defining a number of openings, each of which contains a relatively abrasive insert. The inserts can readily be replaced.
Title: Method of and means for treating a floor A pad for use on a floor-polishing machine comprises a circular, non-abrasive body defining a number of openings, each of which contains a relatively abrasive insert. The inserts can readily be replaced.
Description
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Title: Method of and means for treating a floor Description of the invention The present invention relates to the cleaning of floors and is concerned with the cleaning of floor surfaces which are relatively smooth, in - contrast with floor surfaces presented by pile fabrics and other fibrous materials. Cleaning of relatively smooth floor surfaces typically includes rubbing to remove foreign matter from the surface and buffi1ng to establish a shine or other uniform finish on the floor surface.
For cleaning relatively smooth floor surfaces, there are used polishing ;
machines which rotate a pad in contact with the floor surface. Typically, the pad has a fibrous structure and is carried on a carrier which has an array of small hooks or other means for releasably retaining the pad on the carrier.
To remove foreign matter from the surface, it is often necessary to employ a pad which has grains of an abrasive at the working surface of the pad, that is the surface which bears on the floor, during use. In this way, ingrained dirt ;
can be removed from the floor. Furthermore, by means of an abrasive pad ~-score marks can be removed from the floor surface. Pads with different abrasive grains are available so that relatively coarse abrasive pads can be used in some cases and relatively fine abrasive pads can be used in other cases.
The procedure for cleaning a floor surface typically involves rubbing the surface with an abrasive pad rnounted on a polishing machine, removing the abrasive pad and replacing it ~,vith a non-abrasive pad and then rubbing thesurface again with the non-abrasive pad. The use of the non-abrasive pad is necessary, in order to achieve a polished finish on the ~oor surface.
According to a first aspect of the present invention, there is provided a method of treating a surface wherein successive regions of the surface are ~ each subjected to a succession of rubbing strokes and alternate ones of said .`.~:, . .
strokes are abrasive strokes, the intervening strokes being relatively non-abrasive strokes.
We have found that a succession of strokes in which abrasive strokes alternate with non-abrasive strokes removes foreign matter from a aoor surface and achieves a polished finish on the floor. This is surprising, becausewe have previously found that a polished finish cannot be achieved by rubbing a floor surface with a pad which has abrasive particles at the working surface of the pad.
In performance of a method in accordance with the first aspect of the invention, the floor is preferably rubbed with a pad having at least one relatively abrasive region and at least one relatively non-abrasive region and said regions are moved alternately across a local region of the floor. Thus, thepad may be rotated by a known polishing machine.
According to a second aspect of the invention, there is provided a pad suitable for use in rubbing a floor and having a working surface which bears on the floor when the pad is in use, wherein the working surface includes one or more relatively abrasive regions and one or more relatively non-abrasive regions.
In the preferred pad, the or each relatively abrasive region is spaced or are spaced from the periphery of the pad. The pad may have a single relatively non-abrasive region which surrounds the or each of the relatively abrasive regions.
The or at least one of the relatively abrasive regions of the working surface is preferably presented by an insert which is disposed in an opening formed in a main body of the pad. The insert may be an interference fit in the opening and is preferably~freely removable &om the opening. By describing the insert as being freely removable, we mean that the insert can be removed by hand without undue difficulty. However, interference between the insert and the main body of the pad is preferably such that the insert will not fall from the main body when the working surface of the pad is raised above the ~oor.
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An insert which is removable from the main body of the pad can be replaced by a further insert. The further insert may have abrasive qualities different from those of the removed insert. Thus, there may be provided for use with the main body a set of inserts having respective different grades or characteristics.
According to a third aspect of the invention, there is provided a pad suitable for use in rubbing a floor and having a working surface which bears on the floor during use of the pad, wherein the pad defines at least one opening extending into or through the pad from the working surface thereof.
The opening can receive a suitable insert, for example an abrasive insert.
; The opening is preferably spaced from both a centre of the pad and the periphery of the pad. The area of the opening is preferably within ~he range 2.5% to 10~o of the area of the working surface of the pad.
The pad may have a number of openings. ~n this case, the aggregate area of the openings at the working surface is preferably within the range of 8% to 50% of the area of the working surface.
; According to a further aspect of the invention, there is provided a set of pads comprising a larger pad according to the third aspect of the invention and a plurality of smaller pads, each of a size to fit into the opening or a respective opening in the larger pad.
A pad embodying the second and third aspects of the invention and which is used in a method according to the first aspect will now be described, with reference to the accompanying drawing, which shows a perspective view of the pad.
The pad shown in the accompanying drawing has the form of a disc and is preferably cylindricàl, having a diameter which is more than teh times the thickness of the pad. The pad is resiliently flexible and compressible.
When the pad is in an unstressed condition, the pad has a substantially flat, circular surface 10 called herein the working surface. When the pad is in use, the working surface bears on the surface which is being treated by rubbing witn the pad.
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That surface of the pad which is opposite tv the working surface 10 may be substantially identical with the working surface so that the pad can be used either way up.
The pad shown in the accompanying drawing comprises a main body 11 which defines the periphery of the pad and defines a number of openings which extend from the working surface either into the body or completely through the thickness of the body. In each of these openings, there is fitted a respec~ive insert 12. There may be a single insert in a single opening of the main body. Preferably, a number of inserts are provided. By way of example, four inserts 12 are shown in the accompanying draving. These inserts are spaced equally around a centre of the main body.
It will be noted that, in the example illustrated, each of the inserts is spaced from the periphery of the main body 11 and is also spaced from the centre of that body. The inserts may lie somewhat nearer to the periphery of the main body than to its centre.
;, By way of example, circular inserts are shown in the accompanying drawing. The openings and the inserts may have other shapes, for example rectangular. Furthermore, differently shaped inserts may be incorporated in a single pad.
The pad illustrated in the accompanying drawing is intended primarily for use in the treatment of floors. The main body 11 is formed of materials used in the manufacture of known floor treatment pads. Generally, floor-treatment pads are formed of a mass of fibres which are bonded into a coherent body by means of a binder. A variety of binders are used. The binder of the main body 11 is preferably a latex binder. The fibres and the binder are both preferably selected to impart resilience to the body 11.
Each of the inserts 12 also may be constructed a mass of fibres bonded into a coherent body by a suitable binder. Tbe fibres and/or the binder may be the same as or different from that used in the body 11. The fibres and/or the binder may be selected to provide that each insert has a stiffness somewhat greater than that of the body 11. The dimensions of each insert, relative to the dimensions of the corresponding opening in the body 11, 1~' .
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are such that the insert is an interference fit in ~he body 11. The thickness of each insert may be substantially equal to the thickness of the body 11, in a case where each opening extends completely through the thickness of the body.
Either that part of the working surface 10 which is presented by the body 11 or that part of the worlcing surface which is presented by at least one of the inserts 12 has an abrasive characler. In the example illustrated, that part of the working surface which is presented by the body 11 is non-abrasive and each of the inserts 12 has an abrasive character. As in known, abrasive floor-treatment pads, the abrasive character is imparted by the presence of grains of abrasive material at the working surface of each insert 12. Such abrasive parti~les are bound to the fibres of the pad by the binder. The abrasive particles may be incorporated in the binder, prior to binding of ~he fibres to one another. The size and other characteristics of the abrasive particles may be varied according to the type of floor on which the pad is to be used and other circumstances of use. ~ypically, the abrasive particles are present only at and imrnediately adjacent to the surface of each insert 12 and are not present throughout the entire thickness of the insert. The same or different abrasive particles may be present at the opposite working surface of the insert. Alternatively, each insert may have an abrasive character at one working surface and a non-abrasive character at the opposite working surface.
Each insert 12 is an interference fit in the corresponding opening in the body 11. Some resilient deformation of the body and/or of the insert may be necessa~y during insertion and removal of the insert from the body. The body grips the insert sufficiently to ensure that the insert will not fall from the body when the wdrking surface of the pad is raised from a floor surface. The insert can readily be removed from the body 11 by hand. For example, if a portion of the body 11 immediately adjacent to an insert is compressed, the peripheral surface of the insert will be exposed. This facilitates grasping of the insert by hand and withdrawal of the insert. A replacement insert can be fitted by the application of gentle pressure to the insert. The peripheral surfaces of the inserts 12 and the corresponding boundary surfaces of the x .... .. , . . . , , . , , . . ~ .
openings in the body 11 are substantially perpendicular to the working surface of the pad, when the pad is unstressed. It would be within the scope of the invention for the peripheral surfaces of the inserts to be somewhat inclined to the working surface of the pad or of stepped form, in order to retain the insert more securely in the body 11.
We prefer to use removable inserts to provide the relatively abrasive regions of the working surface 10. It is then possible to substitute for the inserts further inserts having different characteristics. Furthermore, an insertwhich has become worn so that its abrasive character is impaired significantly can be replaced by a fresh insert without discarding the main body 11.
However, it would be within the scope of the invention to provide a unita~y pad having a working surface with at least one relatively abrasive region and at least one relatively non-abrasive region. For example, the pad may be formed as a single body of bonded fibre with abrasive particles bonded to the fibres in local regions only of the working surface of the pad. Alternatively, the pad may be constructed of a main body and inserts which are permanently bonded to the main body. It would also be within the scope of the invention for the main body 11 to have an abrasive character and the inserts to be relatively non-abrasive.
; In a case where the main body of the pad has a non-abrasive character and the inserts are abrasive, the aggregate area of the relatively abrasive regions of the working surface of the pad is preferably within the range 2.5% to 50% of the area of the relatively non-abrasive region of the working surface. More preferably, the relatively abrasive regions have an aggregate area which is within the range 10% to 40% of the area of the non-`~abrasive region of the working surface. In a case where a number of inserts are provided in respective openings in the working surface, the area of each opening at the working surface is preferably within the range 2.5% to 10% of the relatively non-abrasive region of the working surface.
-During use of the pad, the pad is rotated with at least a part of the working surface in contact with the floor surface or other surface which is to ` ~ ~be treated. The part of the working surface at which contact is established ,. .
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Title: Method of and means for treating a floor Description of the invention The present invention relates to the cleaning of floors and is concerned with the cleaning of floor surfaces which are relatively smooth, in - contrast with floor surfaces presented by pile fabrics and other fibrous materials. Cleaning of relatively smooth floor surfaces typically includes rubbing to remove foreign matter from the surface and buffi1ng to establish a shine or other uniform finish on the floor surface.
For cleaning relatively smooth floor surfaces, there are used polishing ;
machines which rotate a pad in contact with the floor surface. Typically, the pad has a fibrous structure and is carried on a carrier which has an array of small hooks or other means for releasably retaining the pad on the carrier.
To remove foreign matter from the surface, it is often necessary to employ a pad which has grains of an abrasive at the working surface of the pad, that is the surface which bears on the floor, during use. In this way, ingrained dirt ;
can be removed from the floor. Furthermore, by means of an abrasive pad ~-score marks can be removed from the floor surface. Pads with different abrasive grains are available so that relatively coarse abrasive pads can be used in some cases and relatively fine abrasive pads can be used in other cases.
The procedure for cleaning a floor surface typically involves rubbing the surface with an abrasive pad rnounted on a polishing machine, removing the abrasive pad and replacing it ~,vith a non-abrasive pad and then rubbing thesurface again with the non-abrasive pad. The use of the non-abrasive pad is necessary, in order to achieve a polished finish on the ~oor surface.
According to a first aspect of the present invention, there is provided a method of treating a surface wherein successive regions of the surface are ~ each subjected to a succession of rubbing strokes and alternate ones of said .`.~:, . .
strokes are abrasive strokes, the intervening strokes being relatively non-abrasive strokes.
We have found that a succession of strokes in which abrasive strokes alternate with non-abrasive strokes removes foreign matter from a aoor surface and achieves a polished finish on the floor. This is surprising, becausewe have previously found that a polished finish cannot be achieved by rubbing a floor surface with a pad which has abrasive particles at the working surface of the pad.
In performance of a method in accordance with the first aspect of the invention, the floor is preferably rubbed with a pad having at least one relatively abrasive region and at least one relatively non-abrasive region and said regions are moved alternately across a local region of the floor. Thus, thepad may be rotated by a known polishing machine.
According to a second aspect of the invention, there is provided a pad suitable for use in rubbing a floor and having a working surface which bears on the floor when the pad is in use, wherein the working surface includes one or more relatively abrasive regions and one or more relatively non-abrasive regions.
In the preferred pad, the or each relatively abrasive region is spaced or are spaced from the periphery of the pad. The pad may have a single relatively non-abrasive region which surrounds the or each of the relatively abrasive regions.
The or at least one of the relatively abrasive regions of the working surface is preferably presented by an insert which is disposed in an opening formed in a main body of the pad. The insert may be an interference fit in the opening and is preferably~freely removable &om the opening. By describing the insert as being freely removable, we mean that the insert can be removed by hand without undue difficulty. However, interference between the insert and the main body of the pad is preferably such that the insert will not fall from the main body when the working surface of the pad is raised above the ~oor.
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An insert which is removable from the main body of the pad can be replaced by a further insert. The further insert may have abrasive qualities different from those of the removed insert. Thus, there may be provided for use with the main body a set of inserts having respective different grades or characteristics.
According to a third aspect of the invention, there is provided a pad suitable for use in rubbing a floor and having a working surface which bears on the floor during use of the pad, wherein the pad defines at least one opening extending into or through the pad from the working surface thereof.
The opening can receive a suitable insert, for example an abrasive insert.
; The opening is preferably spaced from both a centre of the pad and the periphery of the pad. The area of the opening is preferably within ~he range 2.5% to 10~o of the area of the working surface of the pad.
The pad may have a number of openings. ~n this case, the aggregate area of the openings at the working surface is preferably within the range of 8% to 50% of the area of the working surface.
; According to a further aspect of the invention, there is provided a set of pads comprising a larger pad according to the third aspect of the invention and a plurality of smaller pads, each of a size to fit into the opening or a respective opening in the larger pad.
A pad embodying the second and third aspects of the invention and which is used in a method according to the first aspect will now be described, with reference to the accompanying drawing, which shows a perspective view of the pad.
The pad shown in the accompanying drawing has the form of a disc and is preferably cylindricàl, having a diameter which is more than teh times the thickness of the pad. The pad is resiliently flexible and compressible.
When the pad is in an unstressed condition, the pad has a substantially flat, circular surface 10 called herein the working surface. When the pad is in use, the working surface bears on the surface which is being treated by rubbing witn the pad.
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That surface of the pad which is opposite tv the working surface 10 may be substantially identical with the working surface so that the pad can be used either way up.
The pad shown in the accompanying drawing comprises a main body 11 which defines the periphery of the pad and defines a number of openings which extend from the working surface either into the body or completely through the thickness of the body. In each of these openings, there is fitted a respec~ive insert 12. There may be a single insert in a single opening of the main body. Preferably, a number of inserts are provided. By way of example, four inserts 12 are shown in the accompanying draving. These inserts are spaced equally around a centre of the main body.
It will be noted that, in the example illustrated, each of the inserts is spaced from the periphery of the main body 11 and is also spaced from the centre of that body. The inserts may lie somewhat nearer to the periphery of the main body than to its centre.
;, By way of example, circular inserts are shown in the accompanying drawing. The openings and the inserts may have other shapes, for example rectangular. Furthermore, differently shaped inserts may be incorporated in a single pad.
The pad illustrated in the accompanying drawing is intended primarily for use in the treatment of floors. The main body 11 is formed of materials used in the manufacture of known floor treatment pads. Generally, floor-treatment pads are formed of a mass of fibres which are bonded into a coherent body by means of a binder. A variety of binders are used. The binder of the main body 11 is preferably a latex binder. The fibres and the binder are both preferably selected to impart resilience to the body 11.
Each of the inserts 12 also may be constructed a mass of fibres bonded into a coherent body by a suitable binder. Tbe fibres and/or the binder may be the same as or different from that used in the body 11. The fibres and/or the binder may be selected to provide that each insert has a stiffness somewhat greater than that of the body 11. The dimensions of each insert, relative to the dimensions of the corresponding opening in the body 11, 1~' .
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are such that the insert is an interference fit in ~he body 11. The thickness of each insert may be substantially equal to the thickness of the body 11, in a case where each opening extends completely through the thickness of the body.
Either that part of the working surface 10 which is presented by the body 11 or that part of the worlcing surface which is presented by at least one of the inserts 12 has an abrasive characler. In the example illustrated, that part of the working surface which is presented by the body 11 is non-abrasive and each of the inserts 12 has an abrasive character. As in known, abrasive floor-treatment pads, the abrasive character is imparted by the presence of grains of abrasive material at the working surface of each insert 12. Such abrasive parti~les are bound to the fibres of the pad by the binder. The abrasive particles may be incorporated in the binder, prior to binding of ~he fibres to one another. The size and other characteristics of the abrasive particles may be varied according to the type of floor on which the pad is to be used and other circumstances of use. ~ypically, the abrasive particles are present only at and imrnediately adjacent to the surface of each insert 12 and are not present throughout the entire thickness of the insert. The same or different abrasive particles may be present at the opposite working surface of the insert. Alternatively, each insert may have an abrasive character at one working surface and a non-abrasive character at the opposite working surface.
Each insert 12 is an interference fit in the corresponding opening in the body 11. Some resilient deformation of the body and/or of the insert may be necessa~y during insertion and removal of the insert from the body. The body grips the insert sufficiently to ensure that the insert will not fall from the body when the wdrking surface of the pad is raised from a floor surface. The insert can readily be removed from the body 11 by hand. For example, if a portion of the body 11 immediately adjacent to an insert is compressed, the peripheral surface of the insert will be exposed. This facilitates grasping of the insert by hand and withdrawal of the insert. A replacement insert can be fitted by the application of gentle pressure to the insert. The peripheral surfaces of the inserts 12 and the corresponding boundary surfaces of the x .... .. , . . . , , . , , . . ~ .
openings in the body 11 are substantially perpendicular to the working surface of the pad, when the pad is unstressed. It would be within the scope of the invention for the peripheral surfaces of the inserts to be somewhat inclined to the working surface of the pad or of stepped form, in order to retain the insert more securely in the body 11.
We prefer to use removable inserts to provide the relatively abrasive regions of the working surface 10. It is then possible to substitute for the inserts further inserts having different characteristics. Furthermore, an insertwhich has become worn so that its abrasive character is impaired significantly can be replaced by a fresh insert without discarding the main body 11.
However, it would be within the scope of the invention to provide a unita~y pad having a working surface with at least one relatively abrasive region and at least one relatively non-abrasive region. For example, the pad may be formed as a single body of bonded fibre with abrasive particles bonded to the fibres in local regions only of the working surface of the pad. Alternatively, the pad may be constructed of a main body and inserts which are permanently bonded to the main body. It would also be within the scope of the invention for the main body 11 to have an abrasive character and the inserts to be relatively non-abrasive.
; In a case where the main body of the pad has a non-abrasive character and the inserts are abrasive, the aggregate area of the relatively abrasive regions of the working surface of the pad is preferably within the range 2.5% to 50% of the area of the relatively non-abrasive region of the working surface. More preferably, the relatively abrasive regions have an aggregate area which is within the range 10% to 40% of the area of the non-`~abrasive region of the working surface. In a case where a number of inserts are provided in respective openings in the working surface, the area of each opening at the working surface is preferably within the range 2.5% to 10% of the relatively non-abrasive region of the working surface.
-During use of the pad, the pad is rotated with at least a part of the working surface in contact with the floor surface or other surface which is to ` ~ ~be treated. The part of the working surface at which contact is established ,. .
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includes both abr~sive and non-abrasive regions. Thus, a local region of the surface which is being cleaned is subjected to a succession of rubbing strokes in which abrasive strokes alternate with non-abrasive strokes.
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includes both abr~sive and non-abrasive regions. Thus, a local region of the surface which is being cleaned is subjected to a succession of rubbing strokes in which abrasive strokes alternate with non-abrasive strokes.
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Claims (18)
1. A method of cleaning a surface wherein successive regions of the surface are each subjected to a succession of rubbing strokes and alternate ones of said strokes are abrasive strokes, the intervening strokes being relatively non-abrasive strokes.
2. A method according to Claim 1 wherein the surface is rubbed with a pad having at least one abrasive region and at least one relatively non-abrasive region and wherein said regions are moved alternately across each of said regions of the surface to be cleaned.
3. A pad suitable for use in rubbing a floor and having a working surface which bears on the floor when the pad is in use, wherein the working surface includes at least one relatively abrasive region and at leat one relatively non-abrasive region.
4. A pad according to Claim 3 wherein the relatively abrasive region is spaced from the periphery of the pad.
5. A pad according to Claim 3 having a single relatively non-abrasive region and wherein the relatively abrasive region is surrounded by the non-abrasive region.
6. A pad according to Claim 3 wherein the pad comprises a main body defining an opening and wherein said relatively abrasive region of the working surface is presented by an insert disposed in the opening of the body.
7. A pad according to Claim 3 comprising a body which presents said relatively non-abrasive region of the working surface and which defines at leastone opening extending into the body from the working surface and wherein the pad further comprises an insert in the opening of the body.
8. A pad according to Claim 7 wherein the insert is an interference fit in the opening and is freely removable from the opening.
9. A pad according to Claim 3 wherein the working surface has a plurality of relatively abrasive regions and wherein the aggregate area of the relatively abrasive regions is within the range 2.5% to 50% of the area of the relatively non-abrasive region.
10. A pad according to Claim 3 wherein the relatively non-abrasive region of the working surface is presented by a body of fibrous material bonded by a latex binder into a coherent, resiliently flexible body.
11. A pad suitable for use in rubbing a floor and having a working surface which bears on the floor when the pad is in use, wherein the pad defines at least one opening extending into or through the pad from the working surface thereof.
12. A pad according to Claim 11 wherein the opening is spaced from a centre of the pad.
13. A pad according to Claim 11 wherein the opening is spaced from a periphery of the pad.
14. A pad according to Claim 11 wherein the area of the opening is within the range 2.5% to 10% of the area of the working surface.
15. A pad according to Claim 11 which defines a plurality of openings and wherein the aggregate area of the openings is within the range 8% to 50% of the area of the working surface.
16. A pad according to Claim 11 wherein said opening is substantially cylindrical.
17. A pad according to Claim 11 wherein said opening is substantially rectangular.
18. A set of pads comprising a larger pad according to Claim 11 and a plurality of smaller pads, each of a size to fit into the opening of the larger pad.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8926569A GB2238263A (en) | 1989-11-24 | 1989-11-24 | Method of and means for treating a floor |
| GB8926569.8 | 1989-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2020914A1 true CA2020914A1 (en) | 1991-05-25 |
Family
ID=10666839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2020914 Abandoned CA2020914A1 (en) | 1989-11-24 | 1990-07-11 | Method of and means for treating a floor |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0455751A1 (en) |
| AU (1) | AU5289590A (en) |
| CA (1) | CA2020914A1 (en) |
| DE (1) | DE9002860U1 (en) |
| FR (1) | FR2654967B3 (en) |
| GB (1) | GB2238263A (en) |
| IT (1) | IT220706Z2 (en) |
| WO (1) | WO1991007902A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITPC20010031A1 (en) * | 2001-10-29 | 2003-04-29 | Tullio Arcobello | TOOL FOR ROUGHING SURFACES, IN PARTICULAR FOR FLOORING. |
| ES2264609B1 (en) * | 2004-10-01 | 2007-11-16 | Jesus Bonastre Quintana | DEVICE FOR SCREENING AND BRUSHING SIMULTANEOUS SOILS. |
| FI20115647A0 (en) * | 2011-06-23 | 2011-06-23 | Mika Ahonen | ARRANGEMENTS FOR GRINDING THE FLOOR |
| US20200187743A1 (en) * | 2015-10-06 | 2020-06-18 | James L McArdle | Composite article for maintaining and cleaning hard surfaces |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR35139E (en) * | 1927-04-02 | 1929-12-03 | Device for polishing, waxing, brushing parquet, etc. | |
| GB376631A (en) * | 1931-12-14 | 1932-07-14 | Johann Turek | Improvements in and relating to grinding wheels |
| US2311135A (en) * | 1941-01-09 | 1943-02-16 | Steinmetz Samuel | Rotary brush |
| US3426486A (en) * | 1964-11-16 | 1969-02-11 | Landis Tool Co | Abrasive disc |
| BE707823A (en) * | 1967-12-11 | 1968-06-11 | ||
| US4365377A (en) * | 1981-01-13 | 1982-12-28 | H. B. Fuller Company | Floor polishing machine |
| US4418438A (en) * | 1982-08-02 | 1983-12-06 | Cutler Barry L | Rotary carpet cleaning pad |
| US4536912A (en) * | 1983-11-14 | 1985-08-27 | Malish Terrance J | Coupler device for floor maintenance pad or the like |
-
1989
- 1989-11-24 GB GB8926569A patent/GB2238263A/en not_active Withdrawn
-
1990
- 1990-03-10 DE DE9002860U patent/DE9002860U1/en not_active Expired - Lifetime
- 1990-03-20 AU AU52895/90A patent/AU5289590A/en not_active Abandoned
- 1990-03-20 WO PCT/GB1990/000420 patent/WO1991007902A1/en not_active Application Discontinuation
- 1990-03-20 EP EP19900904912 patent/EP0455751A1/en not_active Withdrawn
- 1990-04-11 IT IT3569490U patent/IT220706Z2/en active IP Right Grant
- 1990-06-25 FR FR9007922A patent/FR2654967B3/en not_active Expired - Fee Related
- 1990-07-11 CA CA 2020914 patent/CA2020914A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| IT220706Z2 (en) | 1993-11-02 |
| AU5289590A (en) | 1991-06-26 |
| EP0455751A1 (en) | 1991-11-13 |
| IT9035694V0 (en) | 1990-04-11 |
| FR2654967A3 (en) | 1991-05-31 |
| FR2654967B3 (en) | 1991-10-31 |
| GB8926569D0 (en) | 1990-01-17 |
| GB2238263A (en) | 1991-05-29 |
| IT9035694U1 (en) | 1991-10-11 |
| DE9002860U1 (en) | 1990-08-23 |
| WO1991007902A1 (en) | 1991-06-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |