Egg candling system
US5615777A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1995 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Jan 17, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S209/938
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light beam such a laser beam is used to scan the surface of an egg for flaws such as pin holes, cracks, thinned shell regions, etc. The light beam is vibrated with a rocking/rotating movement to describe a closed curve such as a circle, ellipse or an ellipse so narrow that it is effectively a straight line. The utilization of such a light beam allows identification of types of flaws due to the character of the progression of light emanating from the egg. The invention includes apparatus for rotating the egg about its longitudinal axis in the path of the beam or beams. The apparatus also includes apparatus for forming the vibrating beam such as mirrors vibrated by out of phase electro-magnetic vibration or piezo electric actuators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.