System for recording the locations of workpiece defects
US4541011A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1982 |
| Grant date | Sep 10, 1985 |
| Priority date | — |
| Expiry date | Mar 15, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/889
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for determining and recording the position, size, shape and depth of a defect in a billet or similar workpiece. The workpiece is displayed on the screen of a video display device, and the positions of the defects on the screen are recorded responsive to being manually selected by an operator. In embodiments in which the position of a video camera generating the video image varies with respect to the workpiece, sensors are used to determine the positions of the workpiece with respect to the camera. The position indications from the sensors are applied to a processor which correlates these indications with the position of the defect on the screen to determine the position of the defect on the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.