Abrasive device
US5454752A · kind A · utility
Inventors
Key dates
| Filing date | Nov 15, 1993 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | Nov 15, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24D7/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The abrasive polishing device has a carrier, typically in the form of a rotatable polishing head (10) and abrasive polishing pads (16) mounted on the carrier. Each polishing pad (16) includes an abrasive body (18) which is provided by a thermoplastic polymer impregnated with ultrahard abrasive particles and which presents an abrasive polishing surface for performing an abrasive polishing action in use. The abrasive body (18) is formed with a regular array of recesses, typically narrow capillarytype passages therein which extend to the abrasive surface. The recesses result in improved cooling of the abrasive layer during a polishing operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.