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Electric membrane switch with seven contact positions

Image Number 2 for United States Patent #6897391.

An electric switch of mechanical structure and functioning, and with electric contacts by means of membranes, suitable for optionally arranging seven different control signals by means of other such contact positions selectively induced by a single button means, four of these positions are differentiated when a slight rolling movement is carried out on said button means in any of four opposite directions and equidistant from each other, a fifth contact position in its clockwise axial rotation, the sixth position by means of its counter-clockwise rotation, and a last contact position by means of a linear pulsating movement.

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