Patent ID: 7798029
Filing Date: 2010-09-21
Classification: B06B,Y10T

Abstract:
1. A vibration apparatus for generating a spheroid wavelength, the vibration apparatus comprising: an electric driving motor for generating rotation force; an eccentric weight coupled to a rotation shaft of the electric driving motor and eccentrically rotating so that the rotation movement of the rotation shaft is converted into three-dimensional movement causing the generation of the spheroid wavelength; and a cover provided above an upper portion of the eccentric weight for restraining the shaking of the upper portion of the eccentric weight caused by the three-dimensional movement due to the eccentric rotation of the eccentric weight; wherein the eccentric weight has a shape of a semi-circular plate, and has a thru-hole formed at the center portion of the eccentric weight in order to couple the rotation shaft; wherein the eccentric weight has an inclined surface portion formed in a manner of cutting an upper surface of the eccentric weight from an end portion of a semi-circular surface to a portion at which the thru-hole is formed; and wherein the inclined surface is in a spiral form.