PCB tooling apparatus and method for forming patterns in registration on both sides of a substrate
US5403684A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1993 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Aug 11, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/901
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention includes a tooling apparatus designed to provide accurately aligned printed circuits on both major sides of a printed circuit board layer, especially advantageous for use in multi-layer PCB's. Also disclosed is the method manufacture of the apparatus and the methods of using the apparatus. The apparatus includes patterns formed on glass masks attached to frames incorporating alignment pins and slots. The patterns include registration marks for alignment during manufacture of the apparatus. During use, the apparatus allows accurate alignment of patterns on both sides of a PCB layer. Also disclosed is the apparatus with buttons used to pattern PCB layers having pre-drilled Z-axis holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.