发明名称 Electromechanical billboard
摘要 An electromechanical image display includes a box-structure of cups arranged in a row and column matrix. A non-rotatable axle for each column in the matrix passes through each of the cups in a column. The axle holds display elements which are rotatable on the axle. At least one electric-field-generating conducting plate in each cup is connected to an electrical source. A display element for each cup is a parallelepiped having six faces with a tunnel through the geometric centers of two of the six faces to permit its installation on the axle. The display element is an electret, or contains one or more electrets, that rotationally responds to the electric field of the electric-field-generating conducting plate.
申请公布号 US2013176610(A1) 申请公布日期 2013.07.11
申请号 US201313781810 申请日期 2013.03.01
申请人 BROWN KEDRICK F. 发明人 BROWN KEDRICK F.
分类号 G02B26/02 主分类号 G02B26/02
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