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:
Jan. 15, 2013
Filed:
Aug. 22, 2003
Nelson H. Oliver, Sunnyvale, CA (US);
Diana M. Tasker, Fair Oaks, CA (US);
Nelson H. Oliver, Sunnyvale, CA (US);
Diana M. Tasker, Fair Oaks, CA (US);
Siemens Medical Solutions USA, Inc., Malvern, PA (US);
Abstract
A backing block composite is provided. A transducer is manufactured to include the backing block of composite material. One constituent material provides a skeleton or matrix for enclosing volumes or pockets of another material. The materials are incompatible for bonding, so do not adhere to each other. For example, silicone microspheres are mixed with a nonsilicone resin, forming silicone pockets within the resin. Since the silicone does not adhere to the resin, the silicone may vibrate or otherwise move relative to the cured resin matrix, causing friction between the two materials. As acoustic energy propagates into the backing material, the composite structure of incompatible materials attenuates the acoustic energy as frictionally generated heat between the two material, or through other processes.