Patent ID: 7150191

Claim:
A micro-machined electromechanical system (MEMS) device, comprising: a plurality of crystalline wafers each having first and second substantially planar and parallel spaced apart opposing surfaces; first and second clamshell covers formed in first and second ones of the crystalline wafers, the clamshell covers each comprising a substantially planar base portion surrounded by upright peripheral wall portions; a micro-machined electromechanical sensing mechanism formed in a third one of the crystalline wafers, the sensing mechanism comprising a frame portion sized to fit within the upright peripheral wall portions of the first and second clamshell covers and a proof mass formed within the frame portion and flexibly suspended therefrom; a first plurality of complementary interfaces positioned between the frame portion of the sensing mechanism and the base portion of the first clamshell cover and being fixed relative to one of the frame portion and the first clamshell cover; and a second plurality of complementary male projection and female socket interfaces positioned between the frame portion of the sensing mechanism and the base portion of the second clamshell cover and being flexibly suspended relative to one of the frame portion and the second clamshell cover.