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. 25, 2003
Filed:
May. 09, 2001
James Steven Collins, Elk Grove Village, IL (US);
Knowles Electronics, LLC, Itasca, IL (US);
Abstract
A condenser microphone, and method of construction, is disclosed. The microphone comprises a cup-shaped housing having a base surface and an upstanding peripheral wall. The wall terminates at a distal edge defining an opening. The microphone further comprises a diaphragm and ring assembly disposed on the base surface and having a peripheral edge, a backplate having a peripheral edge, and a spacing washer disposed between the diaphragm and ring assembly and the backplate for separating the diaphragm and ring assembly from the backplate. The microphone also comprises a substrate closing the housing opening. The spacer is disposed between the peripheral housing wall and the peripheral edges of the diaphragm and ring assembly and the backplate. The spacer includes a radially inwardly directed flange which engages an upper peripheral surface of the backplate.