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Apparatus for processing a workpiece

  • US 6,680,253 B2
  • Filed: 07/16/2001
  • Issued: 01/20/2004
  • Est. Priority Date: 01/22/1999
  • Status: Expired due to Term
First Claim
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1. A machine for processing a workpiece, comprising:

  • a head having a first rotor and a second rotor around the first rotor within a head housing, with the second rotor having an open central area, and with the first rotor engageable with the second rotor to hold a workpiece between them; and

    the second rotor moveable from a first position where it is adjacent to the first rotor, to a second position where the second rotor is spaced apart from the first rotor.

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