Patent ID: 8497619
Filing Date: 2013-07-30
Classification: B81B,H02N,Y10T

Abstract:
1. An electrostatic comb drive actuator for a Micro Electro-Mechanical System (MEMS) device, comprising: a flexure spring assembly; and first and second comb drive assemblies, each coupled to the flexure spring assembly on opposing sides thereof, each of the first and second comb assemblies including: wherein the comb drive fingers are divided equally between the first and second comb drive assemblies and placed symmetrically about a symmetry axis of the flexure spring assembly perpendicular to a direction of motion of the moveable comb drive member; and wherein the first and second comb drive assemblies when electrically energized contribute electrostatic force in the same direction of motion such that the comb drive fingers of the moveable comb drive members of both the first and second comb drive assemblies simultaneously move towards the comb drive fingers of the respective fixed comb drive members of the first and second comb drive assemblies.