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Dynamic balancing apparatus

  • US 3,866,489 A
  • Filed: 11/16/1973
  • Issued: 02/18/1975
  • Est. Priority Date: 11/16/1973
  • Status: Expired due to Term
First Claim
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1. A balancing apparatus for a body rotating about a predetermined axis comprising a spindle for supporting said body for rotation about said axis, a casing mounted on said spindle adjacent said body, an internal gear disposed in said casing in fixed, coaxial relationship with said spindle, a carrier journaled in said casing for rotation about the axis of said spindle, a pinion gear journaled in said carrier and meshing with said internal gear, a balancing mass attached to said pinion gear with its center of gravity eccentric to the axis thereof, and selectively operable means for rotating said carrier relative to said spindle thereby causing the center of gravity of said mass to describe a hypocycloidal path in a plane normal to the axis of said spindle.

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