Patent ID: 11905451
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 16:
17. A bonded abrasive article comprising a shaped mass of abrasive particles held together by a binder, wherein the abrasive particles comprise shaped ceramic abrasive particles, the shaped ceramic abrasive particles each comprising:
a first surface having a generally triangular perimeter having three corners and three inwardly extending regions, wherein each inwardly extending region comprises two substantially straight edges, wherein each inwardly extending region terminates at two of the three corners of the perimeter, and wherein each of the three corners defines an acute interior angle in a range from 30 degrees to 50 degrees;
a second surface opposite, but not contacting, the first surface, wherein the second surface has substantially the same shape as the first surface;
a peripheral surface disposed between and connecting the first and second surfaces;
wherein each shaped ceramic abrasive particle has a length corresponding to the maximum extent of the shaped ceramic abrasive particle along its greatest dimension, a width corresponding to the maximum extent of the shaped ceramic abrasive particle along a dimension orthogonal to the length, and a thickness corresponding to the maximum extent of the shaped ceramic abrasive particle along a dimension orthogonal to both the length and the width; wherein the thickness is less than or equal to one-third of the length; and
wherein at least one inwardly extending region of each shaped ceramic abrasive particle has a maximum depth that is at least 5 percent of a maximum dimension of the shaped ceramic abrasive particle parallel to the maximum depth.