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:
Sep. 16, 2014
Filed:
Jul. 06, 2010
Applicant:
Joseph P. Teter, Darnestown, MD (US);
Inventor:
Joseph P. Teter, Darnestown, MD (US);
Assignee:
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D02G 3/00 (2006.01); B63B 21/56 (2006.01);
U.S. Cl.
CPC ...
B63B 21/56 (2013.01);
Abstract
A variable stiffness tow cable comprising a plurality of strands. Most of the strands comprise a polymer with interstitial spaces filled with a ferrofluid comprising nanoparticles. And, least one of the strands is a nanoparticle control field source. The stiffness is varied for a number of control objectives such to dampen motion. In another application, strum is controlled by electrical input rather than by changing the length of tow cable let out.