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:
Jul. 17, 2007
Filed:
Apr. 05, 2005
Mead C Killion, Elk Grove Village, IL (US);
Robert B Schulein, Evanston, IL (US);
Elmer V Carlson, Glenview, IL (US);
Viorel Drambarean, Skokie, IL (US);
Mead C Killion, Elk Grove Village, IL (US);
Robert B Schulein, Evanston, IL (US);
Elmer V Carlson, Glenview, IL (US);
Viorel Drambarean, Skokie, IL (US);
Etymotic Research, Inc., Elk Grove Village, IL (US);
Abstract
A microphone assembly generally for hearing aid and communications applications is disclosed. The microphone assembly operates in both directional and non-directional or omni-directional modes. The microphone assembly has front and rear sound inlet tubes, and an actuator switch that may be moved between a first position in which the rear tube is plugged, defining the omni-directional mode, and a second position in which the rear tube is unplugged, defining the directional mode. Circuitry senses the position of the actuator switch and selects a microphone output based on the position sensed.