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:
Mar. 21, 2017
Filed:
Sep. 30, 2015
Applicants:
Thomas R Howarth, Portsmouth, RI (US);
Pamela Benjamin, Portsmouth, RI (US);
Inventors:
Thomas R Howarth, Portsmouth, RI (US);
Kim C. Benjamin, Portsmouth, RI (US);
Assignee:
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01); H04R 1/28 (2006.01); H04R 1/22 (2006.01);
U.S. Cl.
CPC ...
H04R 1/2834 (2013.01); H04R 1/222 (2013.01); Y10S 977/932 (2013.01);
Abstract
A transducer is provided that converts energy between two forms using active components. The transducer also includes passive components in contact with the active components that perform passive component functions separate from the energy conversion function. The passive components include ferrofluids and have elastic properties that are modifiable by exposure of the passive component to a magnetic field to selectively control the energy conversion function.