The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 1977
Filed:
Sep. 26, 1975
Derald Edward Grimshaw, Denver, CO (US);
Roe, Inc., Palmyra, WI (US);
Abstract
An apparatus for separating dead fish eggs from live fish eggs is designed to automatically interrogate the degree of opaqueness of each egg in a batch of fish eggs. A selector individually separates an individual fish egg from the batch and injects the separated egg into a fluid stream for delivery past an optical interrogator. Dead fish eggs which display a high degree of opaqueness are optically detected and are hydraulically separated from live eggs which show a low degree of opaqueness. The optical interrogator delivers a light from a light source conveyed through fiber optics to the fluid stream in which the eggs are injected. An electronic detector generates a first pulse for live fish eggs and a second pulse for dead fish eggs. The second type of pulse activates a hydraulic fluid switch which causes the dead fish eggs to be deposited in a separate receptacle by changing the flow direction of the fluid stream. The second pulse further activates a numerical display showing the total number of dead fish eggs sorted. Both the first and second pulses activate a numerical display showing the total number of fish eggs in the batch.