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Electric chuck

  • US 6,144,123 A
  • Filed: 07/27/1999
  • Issued: 11/07/2000
  • Est. Priority Date: 07/29/1998
  • Status: Expired due to Fees
First Claim
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1. An electric chuck (1) comprises an electric motor (2) provided with a stator (6), a rotor (5) mounted rotatably within the stator (6) about a first axis of rotation (A), and an outer casing (7) housing within its interior said stator (6) and said rotor (5);

  • and cooling means (14) housed within the interior of said casing (7) for cooling the rotor (5);

    wherein said cooling means comprises at least one annular heat sink fitted to said rotor, and one blower outlet projecting from said casing directly above said heat sink in order to dissipate heat produced.

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