The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 2016
Filed:
Nov. 06, 2012
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Loc X. Van, Woodbury, MN (US);
Thu A. Nguyen, Woodbury, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24D 7/14 (2006.01); B24D 3/20 (2006.01); B24D 5/12 (2006.01); B24D 5/14 (2006.01);
U.S. Cl.
CPC ...
B24D 7/14 (2013.01); B24D 3/20 (2013.01); B24D 5/12 (2013.01); B24D 5/14 (2013.01);
Abstract
A composite abrasive wheel comprises primary and secondary abrasive portions. The primary abrasive portion comprises shaped ceramic abrasive particles retained in a first organic binder. The secondary abrasive portion is bonded to the primary abrasive portion, and comprises secondary crushed abrasive particles retained in a second organic binder. The primary abrasive portion comprises a larger volume percentage of the shaped ceramic abrasive particles than the secondary abrasive portion. A central aperture extends through the composite abrasive wheel.