Hand-held rotary cut-off tool

  • US 6,561,063 B1
  • Filed: 08/18/2000
  • Issued: 05/13/2003
  • Est. Priority Date: 08/18/2000
  • Status: Expired due to Term
First Claim
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1. An apparatus comprising:

  • a hand-held housing having an open end centered on an axis and a housing abutment surface facing axially outward of said open end;

    a motor, within said housing, having an output shaft extending along said axis;

    a guard having a guard flange with a mounting hole;

    an arbor configured to extend axially from said shaft through said mounting hole;

    a cut-off disk receivable on said arbor; and

    a spring configured to be received in an installed position in which said spring is compressively engaged by and between said housing abutment surface and said guard flange, such that said spring releasably restrains said guard from swiveling about said axis;

    said housing further having an internal screw-thread centered on said axis; and

    said apparatus further comprising a tubular fitting having a bore that receives said arbor, an external screw-thread that is engageable with said internal screw-thread, an axially facing fitting abutment surface, and a fitting shank portion between said fitting abutment surface and said external screw-thread;

    with said spring being received over said fitting shank portion when said spring is in said installed position.

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