Patent ID: 6065909
Filing Date: 2000-05-23
Classification: B23B,Y10T

Abstract:
A multi-function drill bit assembly with slidably positionable hole saw, the drill bit assembly comprising:an elongate drill bit member, the elongate drill bit member having a drilling portion and an attachment portion, the drilling portion having a sharp cutting tip, the attachment portion having at least one flat surface running longitudinally across;a reversible arbor member, a cylindrical cavity extends axially through the reversible arbor member, the attachment portion of the elongate drill bit member being slidably and reversibly disposed in the cylindrical cavity, the reversible arbor member having a first portion and a cylindrical skirt portion, the cylindrical skirt portion extending outwardly from the first portion and being generally concentric with the cylindrical cavity, the cylindrical skirt portion having an exterior surface with a first set of threads running circumferentially across, the reversible arbor member being mountable on said elongate drill bit member with the cylindrical skirt portion to extend either in a same direction as said sharp cutting tip or alternatively in an opposite direction 180.degree. remote from said sharp cutting tip;means for securing the arbor member to the elongate drill bit member in corotative assembly; anda hole saw member, the hole saw member having a cylindrical body with a closed end and an open end, a plurality of cutting teeth peripherally extending from the open end, the closed end having an aperture therethrough, a second set of threads extends circumferentially around the aperture, the second set of threads being axially aligned to correspond with the first set of threads, the cylindrical skirt portion of the arbor member being disposed in the aperture in the hole saw member, and the elongate drill bit member being disposed in and extending through the hole saw member.