US3916579A - Slotted abrasive wheel - Google Patents
Slotted abrasive wheel Download PDFInfo
- Publication number
- US3916579A US3916579A US548773A US54877375A US3916579A US 3916579 A US3916579 A US 3916579A US 548773 A US548773 A US 548773A US 54877375 A US54877375 A US 54877375A US 3916579 A US3916579 A US 3916579A
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- US
- United States
- Prior art keywords
- wheel
- slot
- slots
- grinding
- grinding wheel
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots
Definitions
- FIG. 1 is a side elevational view of a grinding wheel incorporating the features of the present invention
- FIG. 2 is an end elevational view of the grinding wheel
- FIG. 3 is a fragmentary sectional view taken substantially along line 3-3 of FIG. 2;
- FIG. 4 is a fragmentary sectional view taken substantially along line 4-4 of FIG. 2.
- a grinding wheel includes opposed faces 12 and 13 and a peripheral surface 14.
- the surface 14 and, if desired, the faces 12 and 13 are provided with an abrasive coating.
- the wheel may include hubs 16 and a central bore 18 for mounting the grinding wheel on a drive shaft or the like.
- Transverse slots 20 are spaced around the peripheral surface 14, the slots being disposed preferably at an angle of approximately 50 relative to the wheel axis 22.
- the number of slots will vary with the wheel diameter and typically a 6 inch diameter wheel may include 6 slots while a 12 inch diameter wheel will include 18 slots.
- the width and depth of the slots will also vary as desired but preferably may be approximately inches wide and /4 inches deep.
- the wheel face at the leading edge of each slot in the direction of wheel rotation, is provided with a tapered recess 26.
- the tapered recess 26 originates at the wheel face ahead of each corresponding slot in the direction of wheel rotation and tapers inwardly from the face and toward the slot.
- the recess preferably has a depth, radially of the grinding wheel, substantially equal to the depth of the corresponding slot.
- the taper angle of the recess, in a direction away from the grinding wheel face may vary considerably and still provide the advantage of increased air flow. However, an angle of approximately l0 has been utilized and found to be satisfactory.
- each slot With the provision of the relief at the leading edge of each slot, sufficient air is picked up to clear the residue of ground rubber out of the slots and thereby provide a cooler running grinding wheel and one which will have considerably less tendency to clog. The wheel also tends to run much more quietly than prior art slotted wheels and it is believed that this characteristic results from the particular angularity of the slots.
- the surfaces of the recesses may also, if desired, be provided with an abrasive coating.
- chamfers 28 at the radially outermost edges of the slots at the juncture thereof with the peripheral face of the wheel.
- Such chamfers are coated with abrasive material and provide a lead-in surface for the cutting edge and thereby increase the grinding area which is presented to the material being ground.
- Such chamfers also substantially eliminate the problem of wearing away the abrasive material from the otherwise sharp corners of the slot.
- a grinding wheel having opposed faces and-a peripheral abrasive coated grinding surface; a plurality of transverse slots in said peripheral surface, said slots being angularly disposed relative to the wheel axis and extending across the entire width of the peripheral surface; the wheel face, at the leading edge of each slot in the direction of wheel rotation, being recessed at said edge for approximately the full radial depth of the slot so as to provide increased air flow through the slots as the wheel rotates.
- each recess originates at the wheel face ahead of the corresponding slot in the direction of wheel rotation and tapers inwardly from the face toward the slot.
- a grinding wheel according to claim 1 wherein corresponding recesses are provided in both wheel faces, the recesses for each slot being at diagonally opposite sides thereof to accommodate wheel rotation in either direction.
- a grinding wheel according to claim 1 wherein the outer transverse edges of each slot are chamfered and the chamfered surfaces are coated with abrasive material.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
A grinding wheel has slots angularly disposed across the peripheral grinding face. A tapered recess is provided at the leading radial edge of each slot so as to provide increased air flow through the slots as the wheel rotates. The radially outward edges of each slot are chamfered to increase the available grinding area.
Description
United States Patent Waller et al. Nov. 4, 1975 SLOTTED ABRASIVE WHEEL 2,837,878 6/1958 Johnson 51/206 R Inventors: Gustav Martin Waller, Geneva; 3,579,928 5/1971 Held 5l/356 g 'a g f' Landmark Charles FOREIGN PATENTS OR APPLICATIONS 1,132,479 6/1962 Germany 125/15 [73] Assigneez Tunco Manufacturing Inc., Geneva,
Ill. Primary Examiner-Donald G. Kelly [22] F1led: Feb. 10, 1975 [21] Appl. No.: 548,773
[ ABSIRACT [2%] }l.S.CCll 5l/2il6 P; 51/356 A grinding wheel has Slots angularly disposed across lllt. I the peripheral g g face. A tapered recess i p [58] Field of Search 51/356 206 206 vided at the leading radial edge of each slot so as to 51/206'5 125/15 provide increased air flow through the slots as the wheel rotates. The radially outward edges of each slot [56] References C'ted are chamfered to increase the available grinding area.
UNITED STATES PATENTS 8/1936 Sherk 51/206 P 6 Claims, 4 Drawing Figures US. Patent Nov. 4, 1975 3,916,579
SLOTTED ABRASIVE WHEEL Grinding wheels have been used to grind away the black rubber from the outer wall of automotive tires to expose the white rubber and provide thereby the socalled white wall tire. The grinding operation, for many years after its inception, was extremely inefficient because the rubber which was ground from the tire tended to rapidly clog the grinding wheel and greatly reduced its efficiency and working life. Such grinding wheels also tended to overheat and this also contributed to short wheel life.
The problem was partially overcome by the addition of angularly disposed slots in the peripheral grinding face of the wheel, thereby providing reservoirs through which the fine residue of ground-up rubber particles could escape. Such slots also, by flow of air therethrough as the wheel rotated, alleviated the build-up of heat resulting in a more efficient wheel with a longer grinding life. These wheels, however, were still not completely satisfactory in that they retained some tendency to clog and there still was an objectionable bui1dup of heat during a grinding operation.
It has been found that increased air flow can beattained by the provision of a tapered recess in the face of the wheel at the leading edge of each wheel slot. The purpose of the recesses is to relieve slightly the leading edge of each slot so that the trailing edge can scoop up an increased volume of air and direct it down the slot to effectively clear out the residue of ground rubber.
It is an object therefore, of the present invention to modify the slot structure of a slotted grinding wheel so as to increase the efficiency and life of the wheel.
Other objects will be apparent from the following description and accompanying drawings wherein:
FIG. 1 is a side elevational view of a grinding wheel incorporating the features of the present invention;
FIG. 2 is an end elevational view of the grinding wheel;
FIG. 3 is a fragmentary sectional view taken substantially along line 3-3 of FIG. 2; and
FIG. 4 is a fragmentary sectional view taken substantially along line 4-4 of FIG. 2.
Referring now to the drawings, a grinding wheel includes opposed faces 12 and 13 and a peripheral surface 14. The surface 14 and, if desired, the faces 12 and 13 are provided with an abrasive coating. The wheel may include hubs 16 and a central bore 18 for mounting the grinding wheel on a drive shaft or the like.
The wheel face, at the leading edge of each slot in the direction of wheel rotation, is provided with a tapered recess 26. The tapered recess 26 originates at the wheel face ahead of each corresponding slot in the direction of wheel rotation and tapers inwardly from the face and toward the slot. The recess preferably has a depth, radially of the grinding wheel, substantially equal to the depth of the corresponding slot. The taper angle of the recess, in a direction away from the grinding wheel face, may vary considerably and still provide the advantage of increased air flow. However, an angle of approximately l0 has been utilized and found to be satisfactory.
With the provision of the relief at the leading edge of each slot, sufficient air is picked up to clear the residue of ground rubber out of the slots and thereby provide a cooler running grinding wheel and one which will have considerably less tendency to clog. The wheel also tends to run much more quietly than prior art slotted wheels and it is believed that this characteristic results from the particular angularity of the slots. The surfaces of the recesses may also, if desired, be provided with an abrasive coating.
It is advantageous also, to provide'recesses (see FIG. 2) at both faces of the wheel and at diagonally opposite edges of each slot so as to accommodate wheel rotation in either direction.
Still greater advantages can be obtained by the provision of chamfers 28 at the radially outermost edges of the slots at the juncture thereof with the peripheral face of the wheel. Such chamfers are coated with abrasive material and provide a lead-in surface for the cutting edge and thereby increase the grinding area which is presented to the material being ground. Such chamfers also substantially eliminate the problem of wearing away the abrasive material from the otherwise sharp corners of the slot.
What Is claimed is:
1. A grinding wheel having opposed faces and-a peripheral abrasive coated grinding surface; a plurality of transverse slots in said peripheral surface, said slots being angularly disposed relative to the wheel axis and extending across the entire width of the peripheral surface; the wheel face, at the leading edge of each slot in the direction of wheel rotation, being recessed at said edge for approximately the full radial depth of the slot so as to provide increased air flow through the slots as the wheel rotates.
2. A grinding wheel according to claim 1 wherein each recess originates at the wheel face ahead of the corresponding slot in the direction of wheel rotation and tapers inwardly from the face toward the slot.
3. A grinding wheel according to claim 2 wherein the angle of taper of the recess is about 10.
4. A grinding wheel according to claim 1 wherein corresponding recesses are provided in both wheel faces, the recesses for each slot being at diagonally opposite sides thereof to accommodate wheel rotation in either direction.
5. A grinding wheel according to claim 1 wherein the outer transverse edges of each slot are chamfered and the chamfered surfaces are coated with abrasive material.
6. A grinding wheel according to claim I wherein the slots are disposed at an angle of approximately 50 from the wheel axis.
Claims (6)
1. A grinding wheel having opposed faces and a peripheral abrasive coated grinding surface; a plurality of transverse slots in said peripheral surface, said slots being angularly disposed relative to the wheel axis and extending across the entire width of the peripheral surface; the wheel face, at the leading edge of each slot in the direction of wheel rotation, being recessed at said edge for approximately the full radial depth of the slot so as to provide increased air flow through the slots as the wheel rotates.
2. A grinding wheel according to claim 1 wherein each recess originates at the wheel face ahead of the corresponding slot in the direction of wheel rotation and tapers inwardly from the face toward the slot.
3. A grinding wheel according to claim 2 wherein the angle of taper of the recess is about 10*.
4. A grinding wheel according to claim 1 wherein corresponding recesses are provided in both wheel faces, the recesses for each slot being at diagonally opposite sides thereof to accommodate wheel rotation in either direction.
5. A grinding wheel according to claim 1 wherein the outer transverse edges of each slot are chamfered and the chamfered surfaces are coated with abrasive material.
6. A grinding wheel according to claim 1 wherein the slots are disposed at an angle of approximately 50* from the wheel axis.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US548773A US3916579A (en) | 1975-02-10 | 1975-02-10 | Slotted abrasive wheel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US548773A US3916579A (en) | 1975-02-10 | 1975-02-10 | Slotted abrasive wheel |
Publications (1)
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US3916579A true US3916579A (en) | 1975-11-04 |
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Family Applications (1)
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US548773A Expired - Lifetime US3916579A (en) | 1975-02-10 | 1975-02-10 | Slotted abrasive wheel |
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Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4004378A (en) * | 1975-07-18 | 1977-01-25 | Engelhard Minerals & Chemicals Corporation | Grinding wheel with integral blower |
US4178689A (en) * | 1976-03-19 | 1979-12-18 | Star Dental Manufacturing Co., Inc. | Dental burr |
US4262650A (en) * | 1978-03-05 | 1981-04-21 | Applications Industrielles Du Diamant S.T.I. Triffus France | Expensive abrasive base cutting wheels with a metallic core notched at the periphery |
JPS573561U (en) * | 1980-06-10 | 1982-01-09 | ||
US4411250A (en) * | 1980-04-30 | 1983-10-25 | Horst Lach | Trueing tool |
US5087319A (en) * | 1989-06-27 | 1992-02-11 | Kurt Held | Apparatus for continuous manufacture of laminates |
EP0508042A1 (en) * | 1991-03-13 | 1992-10-14 | ASAOKA Co., Ltd. | Method and apparatus for pulverizing difficult to crush plastic materials |
US5611724A (en) * | 1995-12-01 | 1997-03-18 | General Electric Company | Grinding wheel having dead end grooves and method for grinding therewith |
US5630495A (en) * | 1994-09-28 | 1997-05-20 | Rapistan Demag Corp. | Conveyor system diverter components having friction-enhancing surfaces and related methods of use |
US5725416A (en) * | 1995-12-20 | 1998-03-10 | Russell; Jerry | Apparatus and method for making and using a combined cutting/grinding wheel |
EP0896860A2 (en) * | 1997-08-11 | 1999-02-17 | KOPP WERKZEUGMASCHINEN GmbH | Grinding wheel |
US5944584A (en) * | 1996-08-27 | 1999-08-31 | Shin-Estu Handotai Co., Ltd. | Apparatus and method for chamfering wafer with loose abrasive grains |
US6840851B1 (en) * | 2000-09-28 | 2005-01-11 | Inland Diamond Products Company | Bevel edging wheel with swarf clearance |
US20050064799A1 (en) * | 2003-09-24 | 2005-03-24 | Inland Diamond Products Company | Ophthalmic roughing wheel |
US20050126357A1 (en) * | 2003-07-11 | 2005-06-16 | Greg Brunton | Cutting tool and method of use |
US20090258576A1 (en) * | 2008-04-11 | 2009-10-15 | Jtekt Corporation | Grinding machine and grinding method |
US20100041321A1 (en) * | 2006-10-12 | 2010-02-18 | Jtekt Corporation | Coolant dynamic pressure releasing method in grinding operation, grinding method using the releasing method, and grinding wheel for use in the grinding method |
US20100317267A1 (en) * | 2006-11-06 | 2010-12-16 | Jtekt Corporation | Grinding wheel with sloping groove and process for fabricating the same |
US20100329805A1 (en) * | 2009-06-25 | 2010-12-30 | Shinhan Diamond Ind. Co., Ltd. | Diamond tool |
US8007347B1 (en) * | 2006-10-27 | 2011-08-30 | Dynabrade, Inc. | Rotary abrading tool |
US20120178345A1 (en) * | 2011-01-07 | 2012-07-12 | Inland Diamond Products Company | Abrasive wheel with closed profiles in cutting surface |
CN101522373B (en) * | 2006-10-20 | 2012-11-21 | 株式会社捷太格特 | Method for manufacturing grinding wheel having depressions on grinding surface thereof |
US20130217315A1 (en) * | 2012-02-22 | 2013-08-22 | Inland Diamond Products Company | Segmented profiled wheel and method for making same |
CN105922090A (en) * | 2016-04-27 | 2016-09-07 | 中航动力株洲航空零部件制造有限公司 | Grinding wheel rod for high precision inner hole processing and processing method |
CN109290968A (en) * | 2018-11-09 | 2019-02-01 | 东南大学 | A kind of micro- texture grinding wheel and its method for improving grinding heat dissipation |
US20210162565A1 (en) * | 2017-03-31 | 2021-06-03 | B & J Rocket Sales Ag | Improved abrading wheel |
WO2023194596A1 (en) | 2022-04-07 | 2023-10-12 | Chocard Yona | Ventilation device for an abrasive wheel and abrasive wheel comprising such a ventilation device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2049874A (en) * | 1933-08-21 | 1936-08-04 | Miami Abrasive Products Inc | Slotted abrasive wheel |
US2837878A (en) * | 1956-01-18 | 1958-06-10 | Oliver M Johnson | Abrading wheels with undercut relief grooves |
US3579928A (en) * | 1969-07-14 | 1971-05-25 | Gerhard R Held | Self-air cooling abrading wheel |
-
1975
- 1975-02-10 US US548773A patent/US3916579A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2049874A (en) * | 1933-08-21 | 1936-08-04 | Miami Abrasive Products Inc | Slotted abrasive wheel |
US2837878A (en) * | 1956-01-18 | 1958-06-10 | Oliver M Johnson | Abrading wheels with undercut relief grooves |
US3579928A (en) * | 1969-07-14 | 1971-05-25 | Gerhard R Held | Self-air cooling abrading wheel |
Cited By (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4004378A (en) * | 1975-07-18 | 1977-01-25 | Engelhard Minerals & Chemicals Corporation | Grinding wheel with integral blower |
US4178689A (en) * | 1976-03-19 | 1979-12-18 | Star Dental Manufacturing Co., Inc. | Dental burr |
US4262650A (en) * | 1978-03-05 | 1981-04-21 | Applications Industrielles Du Diamant S.T.I. Triffus France | Expensive abrasive base cutting wheels with a metallic core notched at the periphery |
US4411250A (en) * | 1980-04-30 | 1983-10-25 | Horst Lach | Trueing tool |
JPS573561U (en) * | 1980-06-10 | 1982-01-09 | ||
US5087319A (en) * | 1989-06-27 | 1992-02-11 | Kurt Held | Apparatus for continuous manufacture of laminates |
EP0508042A1 (en) * | 1991-03-13 | 1992-10-14 | ASAOKA Co., Ltd. | Method and apparatus for pulverizing difficult to crush plastic materials |
US5630495A (en) * | 1994-09-28 | 1997-05-20 | Rapistan Demag Corp. | Conveyor system diverter components having friction-enhancing surfaces and related methods of use |
US5735388A (en) * | 1994-09-28 | 1998-04-07 | Mannesmann Dematic Rapistan Corp. | Conveyor system diverter components having friction-enhancing surfaces and related methods of use |
US5611724A (en) * | 1995-12-01 | 1997-03-18 | General Electric Company | Grinding wheel having dead end grooves and method for grinding therewith |
US5725416A (en) * | 1995-12-20 | 1998-03-10 | Russell; Jerry | Apparatus and method for making and using a combined cutting/grinding wheel |
US5944584A (en) * | 1996-08-27 | 1999-08-31 | Shin-Estu Handotai Co., Ltd. | Apparatus and method for chamfering wafer with loose abrasive grains |
EP0896860A2 (en) * | 1997-08-11 | 1999-02-17 | KOPP WERKZEUGMASCHINEN GmbH | Grinding wheel |
EP0896860A3 (en) * | 1997-08-11 | 2001-01-31 | KOPP WERKZEUGMASCHINEN GmbH | Grinding wheel |
US6840851B1 (en) * | 2000-09-28 | 2005-01-11 | Inland Diamond Products Company | Bevel edging wheel with swarf clearance |
US20050126357A1 (en) * | 2003-07-11 | 2005-06-16 | Greg Brunton | Cutting tool and method of use |
US20050064799A1 (en) * | 2003-09-24 | 2005-03-24 | Inland Diamond Products Company | Ophthalmic roughing wheel |
US20070178813A1 (en) * | 2003-09-24 | 2007-08-02 | Inland Diamond Products Company | Ophthalmic roughing wheel |
US8597080B2 (en) | 2003-09-24 | 2013-12-03 | Inland Diamond Products Company | Ophthalmic roughing wheel |
US20090117830A1 (en) * | 2003-09-24 | 2009-05-07 | Inland Diamond Products Company | Ophthalmic roughing wheel |
US7497153B2 (en) * | 2003-11-07 | 2009-03-03 | James Hardie International Finance B.V. | Cutting tool and method of use |
US20100041321A1 (en) * | 2006-10-12 | 2010-02-18 | Jtekt Corporation | Coolant dynamic pressure releasing method in grinding operation, grinding method using the releasing method, and grinding wheel for use in the grinding method |
US8197305B2 (en) * | 2006-10-12 | 2012-06-12 | Jtekt Corporation | Dynamic pressure releasing method of grinding liquid in grinding operation, grinding method using the releasing method, and grinding stone for use in the grinding method |
CN101522373B (en) * | 2006-10-20 | 2012-11-21 | 株式会社捷太格特 | Method for manufacturing grinding wheel having depressions on grinding surface thereof |
US8007347B1 (en) * | 2006-10-27 | 2011-08-30 | Dynabrade, Inc. | Rotary abrading tool |
US20100317267A1 (en) * | 2006-11-06 | 2010-12-16 | Jtekt Corporation | Grinding wheel with sloping groove and process for fabricating the same |
US8182318B2 (en) * | 2006-11-06 | 2012-05-22 | Jtekt Corporation | Obliquely grooved grinding wheel and method for manufacturing the same |
US20090258576A1 (en) * | 2008-04-11 | 2009-10-15 | Jtekt Corporation | Grinding machine and grinding method |
US8172644B2 (en) * | 2008-04-11 | 2012-05-08 | Jtekt Corporation | Grinding machine and grinding method |
US20100329805A1 (en) * | 2009-06-25 | 2010-12-30 | Shinhan Diamond Ind. Co., Ltd. | Diamond tool |
US20120178345A1 (en) * | 2011-01-07 | 2012-07-12 | Inland Diamond Products Company | Abrasive wheel with closed profiles in cutting surface |
US8597079B2 (en) * | 2011-01-07 | 2013-12-03 | Inland Diamond Products Company | Abrasive wheel with closed profiles in cutting surface |
US20130217315A1 (en) * | 2012-02-22 | 2013-08-22 | Inland Diamond Products Company | Segmented profiled wheel and method for making same |
US9050706B2 (en) * | 2012-02-22 | 2015-06-09 | Inland Diamond Products Company | Segmented profiled wheel and method for making same |
CN105922090A (en) * | 2016-04-27 | 2016-09-07 | 中航动力株洲航空零部件制造有限公司 | Grinding wheel rod for high precision inner hole processing and processing method |
CN105922090B (en) * | 2016-04-27 | 2019-09-20 | 中航动力株洲航空零部件制造有限公司 | Pole wheel and processing method for high precision inner-pore processing |
US20210162565A1 (en) * | 2017-03-31 | 2021-06-03 | B & J Rocket Sales Ag | Improved abrading wheel |
CN109290968A (en) * | 2018-11-09 | 2019-02-01 | 东南大学 | A kind of micro- texture grinding wheel and its method for improving grinding heat dissipation |
WO2023194596A1 (en) | 2022-04-07 | 2023-10-12 | Chocard Yona | Ventilation device for an abrasive wheel and abrasive wheel comprising such a ventilation device |
FR3134326A1 (en) | 2022-04-07 | 2023-10-13 | Yona CHOCARD | VENTILATION DEVICE FOR AN ABRASIVE WHEEL AND ABRASIVE WHEEL COMPRISING SUCH A VENTILATION DEVICE |
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