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:
Jul. 25, 2006
Filed:
Sep. 14, 2004
Donald R. Jacobson, Virginia Beach, VA (US);
Donald R. Jacobson, Virginia Beach, VA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
Onboard a marine vessel in transit a speedometer, a fathometer and a computer run in conjunction to track the Froude depth number (which is a function of vessel speed and water depth). A warning (e.g., display, signal and/or alarm) appears and/or sounds when the vessel nears or approaches the critical Froude depth number value of one (which is associated with wake wash at its most deleterious level), thus alerting the crew that the vessel's speed must be adjusted (usually, reduced) in order to avoid Froude depth number criticality. Typical embodiments establish a Froude depth number threshold value below 1.0 (e.g., 0.8), above which a red (prohibitive) zone warning is given. Some embodiments additionally establish a Froude depth number value above 1.0 (e.g., 1.2), below which a red (prohibitive) zone warning is given, above which an yellow (cautionary) zone warning (appreciably different from the red zone warning) is given.