Patent ID: 6654473
Filing Date: 2003-11-25
Classification: H04R

Abstract:
A condenser microphone comprising:a cup-shaped housing having a base surface and an upstanding peripheral wall, the peripheral wall terminating at a distal edge defining an opening; a diaphragm and ring assembly disposed on the base surface and having a peripheral edge; a backplate having a peripheral edge; means disposed between the diaphragm and ring assembly and the backplate for separating the diaphragm and ring assembly from the backplate; a substrate closing the housing opening; a spacer disposed between the peripheral housing wall and the peripheral edges of the diaphragm and ring assembly and the backplate, wherein the distal edge of the peripheral wall is rolled to sealingly engage the substrate, creating a rolling force, and the spacer includes means for transfer the rolling force from the printed circuit board to the base surface.