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:
Nov. 11, 2008
Filed:
Jul. 12, 2004
Applicants:
Ralph Brown, Spring Hill, FL (US);
Marin Savov, Hudson, FL (US);
Inventors:
Ralph Brown, Spring Hill, FL (US);
Marin Savov, Hudson, FL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B63B 1/32 (2006.01); B63H 5/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A shallow draft boat has a hull that protects a propulsion propeller within a tunnel that passes only partially through the hull from stem to bow. The hull causes mixing of water and air at high pressure during motion of the boat through the water, creating lift and a pressure gradient that keeps the tunnel filled. The boat prevents propulsion unit malfunction by keeping obstacles, such as debris, crab pots and mammals such as manatees from contact with the propeller.