Printed circuit board hole cleaner
US4203257A · kind A · utility
15Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1978 |
| Grant date | May 20, 1980 |
| Priority date | — |
| Expiry date | Nov 13, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/0088
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Multilaminate printed circuit boards have at least three conductor layers separated by two insulator layers. After drilling through the boards, cleaning of the drilled hole is accomplished by forcing a slurry of granular abrasive grit in a liquid carrier through the hole. Manifolds direct the slurry through the holes thereby cleaning them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.