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. 27, 2018
Filed:
Oct. 20, 2015
Motorola Solutions, Inc., Schaumburg, IL (US);
Andrew P. Miehl, Boca Raton, FL (US);
Deborah A. Gruenhagen, Southwest Ranches, FL (US);
Gary A. Lee, Weston, FL (US);
David J. Meyer, Fort Lauderdale, FL (US);
Karl F. Mueller, Sunrise, FL (US);
John Kevin Arledge, Anderson, SC (US);
MOTOROLA SOLUTIONS, INC., Chicago, IL (US);
Abstract
A method and apparatus are described for providing an acoustically-resistive air-permeable venting structure within a sealed microphone acoustic cavity. A microphone is mounted on a printed circuit board and positioned within a housing. A water-resistant membrane seals the microphone from an exterior of the housing, and a active acoustic cavity establishes an acoustical connection between the water-resistant membrane and the microphone. An acoustically-resistive air-permeable venting structure is formed in the body of the printed circuit board and connects to the active acoustic cavity either directly or via a separate vent path. The venting structure provides a viscous dampening effect by venting an active acoustic cavity of the electronic device to the rest of the enclosure sealed by the water-resistant membrane.