Patent ID: 8362674
Filing Date: 2013-01-29
Classification: H02N

Abstract:
1. An electrostatic micromotor, comprising: a fixed substrate having a facing surface; electrodes arranged on the facing surface of the fixed substrate; and a mobile substrate facing said fixed substrate and configured for relative movement with respect to said fixed substrate along a direction of movement, said mobile substrate having projections with respective facing surfaces facing the facing surface of the fixed substrate, the projections defining indentations extending within said mobile substrate starting from the respective facing surfaces of the projections, the projections having respective side walls defining said indentations, wherein, for each indentation, the side walls defining the indentation have a first separation distance, at said facing surfaces of the respective projections defining the indentation, and a second separation distance, greater than said first separation distance, at an internal region of said indentation, wherein each indentation has a median axis, and at least one of said side walls defining the indentation is curved and extends away from said median axis, starting from said facing surfaces of the projections defining the indentation, towards the internal region of said indentation.