EP2042266B1 - Smoothing and/or lapping tool particularly for finishing stone materials - Google Patents

Smoothing and/or lapping tool particularly for finishing stone materials Download PDF

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Publication number
EP2042266B1
EP2042266B1 EP08164943.6A EP08164943A EP2042266B1 EP 2042266 B1 EP2042266 B1 EP 2042266B1 EP 08164943 A EP08164943 A EP 08164943A EP 2042266 B1 EP2042266 B1 EP 2042266B1
Authority
EP
European Patent Office
Prior art keywords
working portion
tool
resins
working
brushing
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.)
Not-in-force
Application number
EP08164943.6A
Other languages
German (de)
French (fr)
Other versions
EP2042266A3 (en
EP2042266A2 (en
Inventor
Stefano Fioratti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aros SRL
Original Assignee
Aros SRL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aros SRL filed Critical Aros SRL
Priority to PL08164943T priority Critical patent/PL2042266T3/en
Publication of EP2042266A2 publication Critical patent/EP2042266A2/en
Publication of EP2042266A3 publication Critical patent/EP2042266A3/en
Application granted granted Critical
Publication of EP2042266B1 publication Critical patent/EP2042266B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
    • B24D13/145—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face having a brush-like working surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain

Definitions

  • the present invention relates to a smoothing and/or lapping tool, particularly, but not exclusively, suitable for finishing workings of natural or artificial stone, ceramic or the like materials.
  • Stone, porcelain, and not-porcelain ceramic materials are generally polished by using substantially rigid working tools having a Shore B hardness ranging from 70 to 90 degrees.
  • Such tools comprise abrasive granules incorporated in a matrix including a cement binder, such as magnesium oxychloride, or a resin binder, e. g. polyester, polyurethane and epoxy resins; and fillers, e. g. iron carbonates and/or oxides, aluminium oxides, silicon carbides and the like.
  • Such granular abrasives which are generally used with a granule size ranging from 36 to 1800 mesh, allow various hard materials to be worked, thereby obtaining bright surfaces thereon.
  • Tools including a rubber binder and having a Shore B hardness of 20 degree, and brushes including nylon ® as a binder have already been proposed. Such brushes make it possible to carry out surface workings with a high level of homogeneity in the surface finishing thereof.
  • “Turtle” tools have also been proposed that are quite rigid, and thus they require to be mounted on resilient supports.
  • Honing machines have also been proposed which are provided with a plurality of different-type tools designed to carry out a so-called “mirrorlike” or “undulated” surface finishing.
  • the combined use of tools of different type from one another causes sometimes defects to be formed on the materials, especially if single working step is carried out on the material. This means that in order to obtain an optimum surface finishing working two or three smoothing/lapping steps are to be carried out, and this of course heavily affects the working costs.
  • a finishing and/or polishing block-like tool of abrasive material including at least one front working portion and at least one rear portion designed to be anchored to a working head of a honing machine or a handle rear portion.
  • the one front working portion comprises one first brushing working portion including a plurality of bristle elements each extending from said rear portion through a length many times greater than the thickness thereof, and one second working portion including depressions separated by at least one raising zone having size many times greater than the thickness of one bristle element.
  • the main object of the present invention is to provide a smoothing/lapping tool comprising portions of different hardness one with respect to the other, thereby being suitable for selectively work different surface portions of a slab or block of material.
  • Another object of the present invention is to provide a tool which is suitable for carrying out both finishing and polishing workings.
  • Block 1 is shaped as a substantially parallelepiped block, preferably a rectangular block, of abrasive material.
  • Block 1 comprises a front working portion 2 and a rear portion 3.
  • the latter can be handle-shaped for manual use of the tool, or shoe-shaped to be anchorable to a working head of a honing or polishing machine (not shown in the drawings), as it is well known in the art.
  • the front working portion 2 includes one or more brushing working areas 4 having a plurality of bristle elements 5 extending or protruding from the rear anchoring portion or handle 3 for a length many times greater (typically from 5 to 10 times) than maximum thickness or transversal dimension of each bristle element.
  • the brushing working portion or portions is/are spaced apart and extend/s so as to delimit a continuous working front extending throughout the length and, preferably, the width of the front working portion 2.
  • the front working portion 2 also has a plurality of working areas 6, each including depressions 7 separated by raising or in relief areas 8 each extending through an area many times greater (typically from 5 to 10 times) than the thickness of a bristle element.
  • the working area/s 6 is/are spaced apart and/or extend/s so that the areas in relief 8 thereof form all together a continuous or uninterrupted working front extending throughout the length and, preferably, the width of the front working portion 2.
  • Figures 3 and 4 show an annular-shaped finishing and/or polishing tool 1a which includes a rear portion 3a and a front working portion 2a.
  • the latter comprises one or more brushing working areas 4a including a plurality of bristle elements 5a, and one or more working areas 6a provided with a plurality of reliefs or plugs 8a separated by depressions 7a from one another.
  • the series of reliefs 8a alternate with bristle elements 5a, each series of reliefs 8a and bristle elements being arranged along respective concentric circumferences.
  • the rear portion is obtained (e. g. by an injection moulding process) in one piece with the bristle elements 5a, whereas the reliefs or plugs 8a are inserted into, or in any way anchored to respective seats formed between the rear portion and the bristles.
  • the bristle elements are preferably made of a resin material selected from the group comprising thermoplastic resins, such as thermoplastic polyamides (nylon), thermoplastic polyesters (e. g. the Desmopan product made available by the company Bayer S.p.A.), thermoplastic polyurethanes (e. g. Texin made available by Bayer S.p.A.), casting resins, such as polyester polyols (Desmophen made available by Bayer S.p.A.), casting polyester resins, casting epoxy resins, casting silicone resins, resins obtained by a vulcanization process, e. g. vulcanized rubbers.
  • thermoplastic resins such as thermoplastic polyamides (nylon), thermoplastic polyesters (e. g. the Desmopan product made available by the company Bayer S.p.A.), thermoplastic polyurethanes (e. g. Texin made available by Bayer S.p.A.), casting resins, such as polyester polyols (Desmoph
  • a filler material is added which is selected from the group comprising:
  • the reliefs are made of a resin material selected from the group comprising:
  • relief or block portions can be added with a filler material selected from the group referred to above in relation with the bristle elements.
  • the bristle elements have a hardness ranging from 50 Shore A degrees to 30 Shore B degrees, whereas the reliefs have a hardness ranging from 50 Shore B degrees to 90 Shore B degrees.
  • the bristle elements can also have a different height from the rel iefs.
  • Both the bristle elements and the reliefs can be obtained through injection processes, e. g. injection moulding, or a casting process.
  • a resin material for example, can be cast into a cavity in a mould, whereby obtaining the reliefs, that once hardening thereof has been completed can be located in a second mould, where the bristle elements can be over-moulded by means of an injection press.
  • thermosetting resin binder e. g. having a 87 Shore hardness
  • a thermoplastic resin binder e. g. Nevitane 250 D, made available by the company Nevitane S.p.A. at Luzzane (Reggio Emilia - Italy), filled with Ca 12%
  • the thermosetting resin binder used to obtain the reliefs has a granule size one degree-lower than the thermoplastic resin binder used to obtain the bristles.
  • either the bristle elements or the plugs have a granule size ranging from 980 to 1 micron.
  • the reliefs in a tool according to the present invention are substantially rigid and designed to polish surface portions of blocks or slabs made of stone material, whereas the bristle elements are partly resilient and designed to work portions of a block or slab that could not be reached by the reliefs, the bristle elements being suitable for penetrating interstices in the material being worked.
  • a tool 1 or 10 according to the present invention can work the whole surface of a slab or block engaged by tool working front, whereby even a single working step of a honing machine working head is satisfactory to obtain an optimum finishing or lapping working.
  • the bristle elements (5, 5a) and reliefs (8, 8a) delimit a substantially convex surface-working front.
  • a tool according to the present invention can be used for working materials having flat faces, even if they are porous in nature or formed with relatively small depressions therein, since the bristle elements can work pores and depressions as well.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

  • The present invention relates to a smoothing and/or lapping tool, particularly, but not exclusively, suitable for finishing workings of natural or artificial stone, ceramic or the like materials.
  • Stone, porcelain, and not-porcelain ceramic materials are generally polished by using substantially rigid working tools having a Shore B hardness ranging from 70 to 90 degrees. Such tools comprise abrasive granules incorporated in a matrix including a cement binder, such as magnesium oxychloride, or a resin binder, e. g. polyester, polyurethane and epoxy resins; and fillers, e. g. iron carbonates and/or oxides, aluminium oxides, silicon carbides and the like.
  • Such granular abrasives, which are generally used with a granule size ranging from 36 to 1800 mesh, allow various hard materials to be worked, thereby obtaining bright surfaces thereon.
  • Tools including a rubber binder and having a Shore B hardness of 20 degree, and brushes including nylon® as a binder have already been proposed. Such brushes make it possible to carry out surface workings with a high level of homogeneity in the surface finishing thereof. "Turtle" tools have also been proposed that are quite rigid, and thus they require to be mounted on resilient supports.
  • Honing machines have also been proposed which are provided with a plurality of different-type tools designed to carry out a so-called "mirrorlike" or "undulated" surface finishing. The combined use of tools of different type from one another, however, causes sometimes defects to be formed on the materials, especially if single working step is carried out on the material. This means that in order to obtain an optimum surface finishing working two or three smoothing/lapping steps are to be carried out, and this of course heavily affects the working costs.
  • According to EP 295453 A2 , it's disclosed a finishing and/or polishing block-like tool of abrasive material, including at least one front working portion and at least one rear portion designed to be anchored to a working head of a honing machine or a handle rear portion. The one front working portion comprises one first brushing working portion including a plurality of bristle elements each extending from said rear portion through a length many times greater than the thickness thereof, and one second working portion including depressions separated by at least one raising zone having size many times greater than the thickness of one bristle element.
  • The main object of the present invention is to provide a smoothing/lapping tool comprising portions of different hardness one with respect to the other, thereby being suitable for selectively work different surface portions of a slab or block of material.
  • Another object of the present invention is to provide a tool which is suitable for carrying out both finishing and polishing workings.
  • Further aspects and advantages of a smoothing and/or lapping tool according to the present invention will better appear from the following detailed description of specific embodiments thereof, the description being made with reference to the accompanying drawings, in which:
    • Figures 1 and 2 are plan and side views, respectively, of a tool according to a first embodiment of the present invention; and
    • Figures 3 and 4 are a plan view and a cross-section view taken along the line III-III of Fig. 3, respectively, of a second embodiment of a tool according to the present invention.
  • In the set of drawings, equal or similar parts or components are marked with the same reference numerals.
  • With reference first to Figures 1 and 2, a first embodiment of finishing and/or smoothing tool 1 according to the present invention has been shown, which is shaped as a substantially parallelepiped block, preferably a rectangular block, of abrasive material. Block 1 comprises a front working portion 2 and a rear portion 3. The latter can be handle-shaped for manual use of the tool, or shoe-shaped to be anchorable to a working head of a honing or polishing machine (not shown in the drawings), as it is well known in the art.
  • The front working portion 2 includes one or more brushing working areas 4 having a plurality of bristle elements 5 extending or protruding from the rear anchoring portion or handle 3 for a length many times greater (typically from 5 to 10 times) than maximum thickness or transversal dimension of each bristle element. Advantageously, the brushing working portion or portions is/are spaced apart and extend/s so as to delimit a continuous working front extending throughout the length and, preferably, the width of the front working portion 2.
  • The front working portion 2 also has a plurality of working areas 6, each including depressions 7 separated by raising or in relief areas 8 each extending through an area many times greater (typically from 5 to 10 times) than the thickness of a bristle element.
  • Advantageously, the working area/s 6 is/are spaced apart and/or extend/s so that the areas in relief 8 thereof form all together a continuous or uninterrupted working front extending throughout the length and, preferably, the width of the front working portion 2.
  • Figures 3 and 4 show an annular-shaped finishing and/or polishing tool 1a which includes a rear portion 3a and a front working portion 2a. The latter comprises one or more brushing working areas 4a including a plurality of bristle elements 5a, and one or more working areas 6a provided with a plurality of reliefs or plugs 8a separated by depressions 7a from one another. The series of reliefs 8a alternate with bristle elements 5a, each series of reliefs 8a and bristle elements being arranged along respective concentric circumferences. In the embodiment shown in Figs. 3 and 4, the rear portion is obtained (e. g. by an injection moulding process) in one piece with the bristle elements 5a, whereas the reliefs or plugs 8a are inserted into, or in any way anchored to respective seats formed between the rear portion and the bristles.
  • The bristle elements are preferably made of a resin material selected from the group comprising thermoplastic resins, such as thermoplastic polyamides (nylon), thermoplastic polyesters (e. g. the Desmopan product made available by the company Bayer S.p.A.), thermoplastic polyurethanes (e. g. Texin made available by Bayer S.p.A.), casting resins, such as polyester polyols (Desmophen made available by Bayer S.p.A.), casting polyester resins, casting epoxy resins, casting silicone resins, resins obtained by a vulcanization process, e. g. vulcanized rubbers.
  • A filler material is added which is selected from the group comprising:
    • mineral fillers, such as calcium carbonates, kaolins, talc, glass fibres, carbon fibres; and
    • abrasive fillers, such as industrial diamond, corunda; zirconium oxides, tin oxides, aluminium oxides; and silicon, tungsten, aluminium, titanium or boron carbides,
    in a percentage ranging from 40% to 60%.
  • The reliefs are made of a resin material selected from the group comprising:
    • polyester, vinylester, epoxy resins, amine-hardener catalyzed epoxy resins and high-hardness polyurethane resins;
    • thermoplastic resins, such as polyphenylensulphide (PPS), polyamide (PA6, PA66, PA12), copolyamide (PAc), polysulphone (PSU), polyethersulfone (PESU), polyetheretherketone (PEEK); and
    • phenolic resins.
  • Also the relief or block portions can be added with a filler material selected from the group referred to above in relation with the bristle elements.
  • Preferably, the bristle elements have a hardness ranging from 50 Shore A degrees to 30 Shore B degrees, whereas the reliefs have a hardness ranging from 50 Shore B degrees to 90 Shore B degrees.
  • The bristle elements can also have a different height from the rel iefs.
  • Both the bristle elements and the reliefs can be obtained through injection processes, e. g. injection moulding, or a casting process.
  • A resin material, for example, can be cast into a cavity in a mould, whereby obtaining the reliefs, that once hardening thereof has been completed can be located in a second mould, where the bristle elements can be over-moulded by means of an injection press.
  • Advantageously, a thermosetting resin binder, e. g. having a 87 Shore hardness, can be used to obtain the reliefs, whereas a thermoplastic resin binder, e. g. Nevitane 250 D, made available by the company Nevitane S.p.A. at Luzzane (Reggio Emilia - Italy), filled with Ca 12%, can be used for the bristles. More advantageously, the thermosetting resin binder used to obtain the reliefs has a granule size one degree-lower than the thermoplastic resin binder used to obtain the bristles.
  • Advantageously, either the bristle elements or the plugs have a granule size ranging from 980 to 1 micron.
  • The reliefs in a tool according to the present invention are substantially rigid and designed to polish surface portions of blocks or slabs made of stone material, whereas the bristle elements are partly resilient and designed to work portions of a block or slab that could not be reached by the reliefs, the bristle elements being suitable for penetrating interstices in the material being worked. In view of this, a tool 1 or 10 according to the present invention can work the whole surface of a slab or block engaged by tool working front, whereby even a single working step of a honing machine working head is satisfactory to obtain an optimum finishing or lapping working.
  • Preferably, the bristle elements (5, 5a) and reliefs (8, 8a) delimit a substantially convex surface-working front.
  • A tool according to the present invention can be used for working materials having flat faces, even if they are porous in nature or formed with relatively small depressions therein, since the bristle elements can work pores and depressions as well.
  • The tool as described above is susceptible to numerous modifications and variations within the protection scope of the present invention as defined by the claims.

Claims (9)

  1. A finishing and/or polishing block-like tool of abrasive material, which includes at least one front working portion (2, 2a) and at least one rear portion designed to be anchored to a working head of a honing machine or a handle rear portion (3, 3a), said at least one front working portion (2, 2a) comprising:
    - at least one first brushing working portion (4, 4a) including a plurality of bristle elements (5, 5a) each extending from said rear portion (3, 3a) through a length many times greater than the thickness thereof; and
    - at least one second working portion (6, 6a) including depressions (7, 7a) separated by at least one raising zone (8, 8a) having size many times greater than the thickness of one bristle element;
    - said at least one first brushing working portion (4, 4a) is made of a material selected from the group comprising thermoplastic resins, such as thermoplastic polyamides, thermoplastic polyesters, thermoplastic polyurethanes, casting resins, such as polyester polyols, casting polyester resins, casting epoxy resins, casting silicone resins, resins obtained through a vulcanization process, such as vulcanized rubbers; characterized in that said at least one first and/or second portion comprises at least one filler material in a percentage ranging from 40% to 60%, selected from the group comprising: calcium carbonates, kaolins, talc, glass fibres, carbon fibres, industrial diamond, corunda, zirconium oxides, tin oxides, aluminium oxides, and silica, tungsten, aluminium, titanium or boron carbides.
  2. A tool as claimed in claim 1, characterized in that said at least one brushing working portion (4, 4a) has a hardness that differs from that of said at least one second working portion (6, 6a).
  3. A tool as claimed in claim 1 or 2, characterized in that each first brushing working portion (4, 4a) and each second working portion (6, 6a) comprises bristle elements (5, 5a) and reliefs (8, 8a), respectively, that extend to different levels.
  4. A tool as claimed in claim 1 or 2, characterized in that each first brushing working portion (4, 4a) and each second working portion (6, 6a) has bristle elements (5, 5a) and reliefs (8, 8a), respectively, delimiting a substantially convex surface-working front.
  5. A tool as claimed in any previous claim, characterized in that said at least one brushing working portion (4, 4a) has a hardness ranging from 50 Shore A degrees to 30 Shore B degrees.
  6. A tool as claimed in any previous claim, characterized in that said at least one second working portion (6, 6a) has a hardness ranging from 50 Shore B degrees to 90 Shore B degrees.
  7. A tool as claimed in any previous claim, characterized in that said at least one first brushing working portion (4, 4a) and said at least one second working portion (6, 6a) are made of different materials.
  8. A tool as claimed in any previous claim, characterized in that said at least one second working portion (6, 6a) is made of a material selected from the group comprising:
    - polyester, vinylester, epoxy resins, amine-hardener catalyzed epoxy resins and high-hardness polyurethane resins;
    - thermoplastic resins, such as polyphenylensulphide (PPS), polyamide (PA6, PA66, PA12), copolyamide (PAc), polysulphone (PSU), polyethersulfone (PESU), polyetheretherketone (PEEK); and
    - phenolic resins.
  9. A tool as claimed in any previous claim, characterized in that said at least one second portion is made of a material having granule size one degree-lower than that of the material used to obtain said first portion.
EP08164943.6A 2007-09-25 2008-09-23 Smoothing and/or lapping tool particularly for finishing stone materials Not-in-force EP2042266B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08164943T PL2042266T3 (en) 2007-09-25 2008-09-23 Smoothing and/or lapping tool particularly for finishing stone materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000132A ITVR20070132A1 (en) 2007-09-25 2007-09-25 SMOOTHING AND / OR LAPPING TOOL PARTICULARLY FOR THE FINISHING OF STONE MATERIALS

Publications (3)

Publication Number Publication Date
EP2042266A2 EP2042266A2 (en) 2009-04-01
EP2042266A3 EP2042266A3 (en) 2013-08-14
EP2042266B1 true EP2042266B1 (en) 2014-12-17

Family

ID=39967836

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08164943.6A Not-in-force EP2042266B1 (en) 2007-09-25 2008-09-23 Smoothing and/or lapping tool particularly for finishing stone materials

Country Status (13)

Country Link
US (1) US20090081929A1 (en)
EP (1) EP2042266B1 (en)
CN (1) CN101396799A (en)
BR (1) BRPI0802733A2 (en)
CA (1) CA2638584A1 (en)
EG (1) EG24828A (en)
ES (1) ES2531936T3 (en)
IL (1) IL193288A0 (en)
IT (1) ITVR20070132A1 (en)
MX (1) MX2008012268A (en)
PL (1) PL2042266T3 (en)
PT (1) PT2042266E (en)
RU (1) RU2008138091A (en)

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Publication number Priority date Publication date Assignee Title
US20130005221A1 (en) * 2011-06-30 2013-01-03 Saint-Gobain Ceramics & Plastics, Inc. Method of polishing a workpiece with an abrasive segment comprising abrasive aggregates having silicon carbide particles
CN105464667A (en) * 2015-11-16 2016-04-06 武宣县宝信石材有限公司 Stone processing method
CN106625198B (en) * 2016-12-26 2019-04-09 银川市恒益达机械有限公司 Compound superhard honing stone containing zirconium oxide and preparation method thereof
CN109330171B (en) * 2018-11-26 2023-11-14 山东商业职业技术学院 Composite car washing brush
JP7242363B2 (en) * 2019-03-19 2023-03-20 富士紡ホールディングス株式会社 Abrasive brush and method for producing abrasive workpiece
IT201900018134A1 (en) * 2019-10-07 2021-04-07 Ditech S R L TOOL FOR POLISHING CERAMIC AND / OR NATURAL STONES

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US1128139A (en) * 1913-10-31 1915-02-09 John P Hoffman Tooth-brush.
US2279355A (en) * 1940-03-28 1942-04-14 Harry L Wilensky Tooth cleaning and gum massaging brush
US3103027A (en) * 1960-11-30 1963-09-10 Marjorie A Birch Combined tooth brush and gum massager
DE3719796A1 (en) * 1987-06-13 1988-12-22 Gehring Gmbh Maschf METHOD AND TOOL FOR MACHINING SURFACES, ESPECIALLY THE RUNNINGS OF COMBUSTION ENGINES
US5040260A (en) * 1989-03-16 1991-08-20 Michaels George G Tooth cleaning and polishing device
AU647782B2 (en) * 1990-03-29 1994-03-31 Colgate-Palmolive Company, The Toothbrush
US5211494A (en) * 1991-06-04 1993-05-18 Etienette Baijnath Bath brush-backscratcher for cleansing and stimulating one's skin
GB9423421D0 (en) * 1994-11-19 1995-01-11 Smithkline Beecham Plc Novel device
US5679067A (en) * 1995-04-28 1997-10-21 Minnesota Mining And Manufacturing Company Molded abrasive brush
US5930860A (en) * 1996-03-27 1999-08-03 Shipp; Anthony D. Prophy bristle toothbrush
GB9620092D0 (en) * 1996-09-26 1996-11-13 Unilever Plc A brush and method for producing same
US7814603B2 (en) * 1999-06-11 2010-10-19 Gavney Jr James A Powered toothbrush with polishing elements
US6276021B1 (en) * 1999-10-08 2001-08-21 Colgate-Palmolive Company Toothbrush having a bristle pattern providing enhanced cleaning
ES2534825T3 (en) * 2003-10-14 2015-04-29 Tenax S.P.A. Work system using a brush tool
US7988539B2 (en) * 2004-05-21 2011-08-02 Epoxi-Tech, Inc. Abrasive cleaning device

Also Published As

Publication number Publication date
EG24828A (en) 2010-09-28
IL193288A0 (en) 2009-08-03
MX2008012268A (en) 2009-04-15
EP2042266A3 (en) 2013-08-14
EP2042266A2 (en) 2009-04-01
CA2638584A1 (en) 2009-03-25
ES2531936T3 (en) 2015-03-20
PL2042266T3 (en) 2015-05-29
PT2042266E (en) 2015-03-10
BRPI0802733A2 (en) 2009-06-02
RU2008138091A (en) 2010-03-27
US20090081929A1 (en) 2009-03-26
ITVR20070132A1 (en) 2009-03-26
CN101396799A (en) 2009-04-01

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