Patent ID: 6604583
Filing Date: 2003-08-12
Classification: B06B,E02D

Abstract:
A device for driving an object by vibration, into the ground or be removed therefrom, which device comprises a first eccentrically rotatable weight and a second eccentrically rotatable weight, which weights are interconnected by a phase shifter which is capable of adjusting the rotational position of the weights relative to each other, characterized in that the device is provided with a phase shifter comprising a differential which is provided with three interconnected, rotatable parts, wherein rotation of one part results in rotation of another part or of both other parts, the first part of which differential is in drivable contact with the first rotatable weight, and the second part of which is in drivable contact with the second rotatable weight, and wherein the rotational position of the third part determines the relative rotational position of the two rotatable weights;wherein the first part of the differential is a planet gear, the second part is a satellite carrier and the third part is a sun gear, which sun gear is fixedly mounted on a coaxial shaft, about which shaft said carrier and said planet gear can rotate; and wherein the first and the second weight form part of, respectively, a first and a second part of eccentrically rotatable weights and the two weights of each part rotate in opposite directions, thus producing vibration substantially in one direction.