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:
Feb. 19, 2002
Filed:
Dec. 18, 1999
Sherif Safwat, Davis, CA (US);
Other;
Abstract
A series of disturbed (or rippled) air-water interface regions contiguously arranged guide anadromous fish in a selected direction. Artificial or natural light, diffusely refracted by passage through the disturbed regions, establishes an aura-dominated passage that elicits a learned response from fish which have a “silver underbody” perceive the passage being safe. Accordingly, a fish guidance system in accordance with the present invention may include shower assemblies or nozzles for spraying a fluid, such as water, onto the surface of a body of water, and light assemblies for illuminating disturbed air-water interface regions created by the sprayed fluid. A dark, light absorbing surface beneath the aura-dominated passage enhances its effectiveness as do darkened regions created alongside of and complementing that passage. The darkened regions may also be advantageously exploited for guiding dark, catadromous fish.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile