Patent ID: 6325701
Filing Date: 2001-12-04
Classification: B24C

Abstract:
An abrasive cleaning machine comprising:an oscillating drum for receiving and holding articles to be cleaned during an abrasive cleaning process, the drum defining a chamber and being disposed along a longitudinal axis foroscillating rotational movement in alternating directions about said axis by a mechanism; the drum having an upper opening communicating with the chamber, a base, and two spaced apart end sections defining the front and rear of the chamber;a flexible belt having sections that extend around a portion of the circumference of the drum, the belt sections moving transverse to the longitudinal axis of the drum in concert with movement of the drum to provide variable closure to portions of said opening; andan oscillating cleaning head including at least one jet unit for directing streams of abrasive particles against the articles in the drum, the cleaning head being disposed along the upper drum opening with at least one jet unit in communication with the drum chamber, for oscillating movement transverse to the longitudinal axis of the drum in synchronization with oscillating rotational movement of the drum to thereby direct communication of the streams of abrasive particles with specific areas of the drum chamber during the oscillating rotational movement of the drum.