Patent ID: 9114940
Filing Date: 2015-08-25
Classification: A63F,A63H,B65G

Abstract:
1. A device for moving an object across a surface, comprising: a bending wave generator including a plurality of structure borne sound generators distributed along an edge of the surface, arranged to generate bending waves in the surface; a determiner arranged to determine a position of the object on the surface; and a controller programmed to control the bending wave generator, so that the object approaches a desired position on the surface based on the bending waves; wherein the controller is programmed to perform a wave field synthesis and to individually control each of the plurality of structure borne sound generators according to the wave field synthesis to generate an elementary wave, so that the object experiences a resulting component of movement, passing tangentially to the surface, by being carried on surface wave peaks of a wave field at the surface resulting from a superposition of the elementary waves of the plurality of borne sound generators, such that the object moves toward the desired position.