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. 29, 2009
Filed:
Mar. 08, 2005
Andrew C. Keefe, Santa Monica, CA (US);
William Barvosa-carter, Ventura, CA (US);
Christopher P. Henry, Newbury Park, CA (US);
Guillermo A. Herrera, Winnetka, CA (US);
Geoffrey P. MC Knight, Los Angeles, CA (US);
Nancy L. Johnson, Northville, MI (US);
Andrew C. Keefe, Santa Monica, CA (US);
William Barvosa-Carter, Ventura, CA (US);
Christopher P. Henry, Newbury Park, CA (US);
Guillermo A. Herrera, Winnetka, CA (US);
Geoffrey P. Mc Knight, Los Angeles, CA (US);
Nancy L. Johnson, Northville, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
Active seal assemblies employing active materials that can be controlled and remotely changed to alter the seal effectiveness, wherein the active seal assemblies actively change modulus properties such as stiffness, shape orientation, and the like. The active seal assemblies are generally configured to reduce the noise (sound waves) that is transmitted through the seal by measuring and actively canceling and/or absorbing the noise.