Polishing machine and method of attaching emery cloth to the polishing machine
US4674236A · kind A · utility
8Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1986 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Mar 11, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B57/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A polishing machine has an upper polishing plate and a lower polishing plate provided below the upper polishing plate. The upper polishing plate has slurry passages. Plugs for supplying slurry are detachably quick coupled to the slurry passages. A piece of polishing pad is bonded to the lower surface of the upper polishing plate. After a spent polishing pad has been removed and a fresh polishing pad has been attached to the lower surface of the upper polishing plate, a hole-cutter is downwardly inserted in each slurry passage until it pierces the fresh polishing pad, thus cutting a hole in the polishing pad.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.