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. 08, 2018
Filed:
Sep. 01, 2016
Hiroshi Akino, Kanagawa, JP;
Hiroshi Akino, Kanagawa, JP;
KABUSHIKI KAISHA AUDIO-TECHNICA, Tokyo, JP;
Abstract
A unidirectional condenser microphone unit is provided that have directionality unaffected by the external environment, and a method of manufacturing the unidirectional condenser microphone. The unidirectional condenser microphone unit having an interior and an exterior, the unidirectional condenser microphone includes a diaphragm, a fixed electrode facing the diaphragm, the fixed electrode constituting a capacitor with the diaphragm, an insulating base disposed in a back face side of the fixed electrode, the insulating base supporting the fixed electrode, an air chamber disposed in the back face side of the fixed electrode, and a gap disposed between the fixed electrode and the insulating base. The fixed electrode includes at least one sound hole in communication with the air chamber. The insulating base includes a communication hole establishing communication between the gap and the exterior of the microphone unit. The air chamber and the gap are in communication with each other.