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:
May. 03, 2016
Filed:
Dec. 05, 2012
Applicant:
Knowles Electronics, Llc, Itasca, IL (US);
Inventors:
Sung Bok Lee, Chicago, IL (US);
Eric J. Lautenschlager, Geneva, IL (US);
Assignee:
KNOWLES ELECTRONICS, LLC, Itasca, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01P 15/125 (2006.01); G01C 9/06 (2006.01); G01C 9/14 (2006.01); H04R 3/00 (2006.01); G01P 15/08 (2006.01); H04R 19/00 (2006.01); H04R 31/00 (2006.01);
U.S. Cl.
CPC ...
G01P 15/125 (2013.01); G01C 9/06 (2013.01); G01C 9/14 (2013.01); H04R 3/00 (2013.01); G01C 2009/062 (2013.01); G01P 2015/0822 (2013.01); G01P 2015/0857 (2013.01); H04R 19/005 (2013.01); H04R 31/00 (2013.01);
Abstract
An acoustic sensor includes a back plate; at least one back plate electrode coupled to the back plate; a proof of mass with the proof of mass elastically coupled to the back plate; and a proof of mass electrode coupled to the proof of mass. Movement of the sensor causes a capacitance between the proof of mass electrode and the at least one back plate electrode to vary and the capacitance represents a magnitude of the movement of the sensor.