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:
Nov. 04, 2008
Filed:
Apr. 09, 2004
Michael A. Bryson, Hudsonville, MI (US);
Alan R. Watson, Buchanan, MI (US);
Michael A. Bryson, Hudsonville, MI (US);
Alan R. Watson, Buchanan, MI (US);
Gentex Corporation, Zeeland, MI (US);
Abstract
A vehicle rearview mirror assembly () includes one or more microphone assemblies () positioned on the rear surface () of the mirror housing (). Recesses () are provided in the rear surface to serve as a deflector for deflecting airflow from the defroster. Front ports () are provided on the microphone housing () that open upward, while rear ports () open downward. The microphone assemblies may include an acoustic dam () that extends around the microphone transducer () to acoustically separate the acoustic chamber within the microphone housing into two zones such that the front face of the transducer is acoustically coupled to the first zone and the rear face of transducer is acoustically coupled to the second zone. The microphone assemblies may include windscreens () made of a material of high acoustic resistivity (i.e., about 1 or more Ω/cm), and preferably of very high acoustic resistivity (i.e., about 8 or more Ω/cm).