Patent ID: 6014800
Filing Date: 2000-01-18
Classification: G01L,Y10T

Abstract:
A method of making a capacitive pressure transducer having a tensioned diaphragm comprising the steps of:A) providing a first concave body member extending about a central axis, and having a peripheral rim disposed in a first plane, said first plane being substantially perpendicular to said central axis, said first concave body member including at least a yieldable portion adapted for radially expanding said peripheral rim of said first concave body member with respect to said central axis in response to force applied to said first concave body member;B) providing a diaphragm having an electrically conductive portion;C) providing an electrode fixedly coupled to said first concave body member and having a substantially planar portion opposite to and spaced apart from said first plane;D) fixedly coupling a peripheral portion of said diaphragm to said peripheral rim of said first concave body member whereby said diaphragm is substantially without tension and positioned substantially in said first plane; andE) applying forces to said first concave body member whereby said concave body member is strained beyond an elastic limit of said concave body member and said peripheral rim becomes expanded whereby said diaphragm becomes tensioned.