Method and apparatus of testing both surfaces of printed circuit board simultaneously
US5461323A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1993 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Nov 23, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/2801
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed are improved method and apparatus for testing printed circuit board in which method and apparatus a selected printed circuit board is stretched to be unbent, thus permitting measuring probes to come to contact to selected points on the printed circuit board exactly for measuring, thus preventing undesired deviations of selected measuring points caused by the bending of the printed circuit board in hitting selected measuring points by probes. The printed circuit board tester includes a pair of clamps for gripping the opposite lateral edges of the printed circuit board standing upright; a drive devices for driving the clamps close to or apart from each other; and stretch control device between the drive devices and one of the clamps for applying a controlled stretch to the printed circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.