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.:

US 7509918 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 31, 2009

Filed:

Feb. 08, 2008
Applicant:

Dirk Lehmann, Winsen, DE;

Inventor:

Dirk Lehmann, Winsen, DE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B63H 25/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

The rudder post () for rudders for water vehicles has end sections () made of a metallic material, in particular of wrought iron, and a mid post section () made of a nonmetallic material connected with the end sections so that the rudder post has a relatively low weight even for a very big length by maintaining a high flexural strength and torsion stiffness.


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