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1. (WO2017151498) DEPRESSED CENTER GRINDING WHEEL
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Pub. No.: WO/2017/151498 International Application No.: PCT/US2017/019670
Publication Date: 08.09.2017 International Filing Date: 27.02.2017
IPC:
B24D 5/14 (2006.01) ,B24D 7/14 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
24
GRINDING; POLISHING
D
TOOLS FOR GRINDING, BUFFING OR SHARPENING
5
Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
14
Zonally-graded wheels; Composite wheels comprising different abrasives
B PERFORMING OPERATIONS; TRANSPORTING
24
GRINDING; POLISHING
D
TOOLS FOR GRINDING, BUFFING OR SHARPENING
7
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
14
Zonally-graded wheels; Composite wheels comprising different abrasives
Applicants:
3M INNOVATIVE PROPERTIES COMPANY [US/US]; 3M Center Post Office Box 33427 Saint Paul, Minnesota 55133-3427, US
Inventors:
VAN, Loc X.; US
NGUYEN, Thu A.; US
Agent:
WRIGHT, Bradford, B.; US
RHODES, Kevin H.,; US
BLANK, Colene H.,; US
FLORCZAK, Yen Tong,; US
HARTS, Dean M. ,; US
LEVINSON, Eric D.,; US
MAKI, Eloise J.,; US
NOWAK, Sandra K.,; US
OLSON, Peter L.,; US
RINGSRED, Ted K.,; US
Priority Data:
62/302,97703.03.2016US
Title (EN) DEPRESSED CENTER GRINDING WHEEL
(FR) ROUE DE MEULAGE À CENTRE RENFONCÉ
Abstract:
(EN) A depressed center grinding wheel comprises an abrasive disc. The abrasive disc comprises a working layer, an intermediate layer, a back layer, and at least two reinforcing scrims. The working layer comprises first abrasive particles retained in a first binder material. The first abrasive particles include from 40 to 100 weight percent of first shaped abrasive particles. The back layer comprises second abrasive particles retained in a second binder material. The second abrasive particles include first crushed abrasive particles and are essentially free of shaped abrasive particles. The intermediate layer is disposed between the working layer and the back layer. The intermediate layer comprises third abrasive particles retained in a third binder material. The third abrasive particles include 25 to 75 weight percent of second shaped abrasive particles.
(FR) L'invention concerne une roue de meulage à centre renfoncé, laquelle roue comprend un disque abrasif. Le disque abrasif comprend une couche de travail, une couche intermédiaire, une couche arrière et au moins deux tissages de renfort. La couche de travail comprend des premières particules abrasives retenues dans un premier matériau de liant. Les premières particules abrasives comprennent de 40 à 100 pour cent en poids de premières particules abrasives ayant une certaine forme. La couche arrière comprend des deuxièmes particules abrasives retenues dans un second matériau de liant. Les deuxièmes particules abrasives comprennent des premières particules abrasives broyées et sont essentiellement exemptes de particules abrasives ayant une certaine forme. La couche intermédiaire est disposée entre la couche de travail et la couche arrière. La couche intermédiaire comprend des troisièmes particules abrasives retenues dans un troisième matériau de liant. Les troisièmes particules abrasives comprennent de 25 à 75 pour cent en poids de secondes particules abrasives ayant une certaine forme.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)