Scratch removal device and method
US7137872B1 · kind B1 · utility
3Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2005 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Sep 30, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24D7/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A polishing wheel including a lower polishing surface and defining a different color from a secondary portion of the polishing wheel, so as to indicate wear of the polishing surface. The polishing surface includes a plurality of main radial flutes extending from a central passage to an outer edge. A reduced profile for the main radial flutes is provided adjacent to the outer edge. A plurality of secondary radial flutes is provided extending from the outer edge, but not in communication with either the central passage or the main radial flutes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.