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Bit attaching arrangement for power tool

  • US 6,042,310 A
  • Filed: 12/01/1997
  • Issued: 03/28/2000
  • Est. Priority Date: 12/01/1997
  • Status: Expired due to Term
First Claim
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1. A bit attaching arrangement for a power tool, the power tool having a rotatably driven shaft onto which the bit is attached, the arrangement comprising:

  • a bit locking member rotatable with respect to the shaft, said bit locking member having a first gear so that rotation of said first gear causes rotation of said locking member;

    a second gear secured to the shaft so that rotation of said second gear causes rotation of the shaft; and

    a rotatable third gear which engages said first and second gears simultaneously;

    wherein rotation of said third gear results in counter rotation between said bit locking member and the shaft so that securement of the bit to the shaft is accomplished.

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