Adjustable diameter hole cutter

Patent metadata

Field	Value
Publication number	US-9597736-B2
Application number	US-201414577055-A
Country	US
Kind code	B2
Filing date	Dec 19, 2014
Priority date	Dec 19, 2013
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

A hole cutter assembly is operable to cut a plurality of different sized diameter holes in a work piece. The hole cutter assembly includes an arbor configured to connect to a power tool for rotation about an axis, and a body coupled to the arbor for rotation with the arbor. The body defines an aperture. The hole cutter assembly includes a drill bit removably received in the aperture of the body for rotation with the arbor, an arm moveably coupled to the body, and a cutting blade coupled to the arm and moveable with the arm relative to the body. The arm is moveable relative to the body to adjust a cutting diameter of the hole cutter assembly when the drill bit is not received within the aperture. The arm is fixed relative to the body when the drill bit is received within the aperture.

First claim

The invention claimed is:

1. A hole cutter assembly operable to cut a plurality of different sized diameter holes in a work piece, the hole cutter assembly comprising:
an arbor configured to connect to a power tool for rotation about an axis;
a body coupled to the arbor for rotation with the arbor;
a first arm moveably coupled to the body, the first arm extending generally perpendicular to the axis;
a first cutting blade coupled to the first arm and moveable with the first arm relative to the body;
a second arm moveably coupled to the body, the second arm extending generally perpendicular to the axis; and
a second cutting blade coupled to the second arm and moveable with the second arm relative to the body;
wherein the first arm and the second arm are oriented generally parallel to each other on opposing sides of the axis;
wherein the body defines an aperture, and further comprising a drill bit removably received in the aperture for rotation with the arbor; and
wherein each arm includes a plurality of notches formed along a length of the arm, wherein each notch selectively aligns with the aperture as the first and second arms move relative to the body, and wherein, when the drill bit is received within the aperture, a first portion of the drill bit is received in the notch of the first arm that is aligned with the aperture to inhibit movement of the first arm relative to the body, and a second portion of the drill bit is received in the notch of the second arm that is aligned with the aperture to inhibit movement of the second arm relative to the body.

2. The hole cutter assembly of claim 1 , wherein the first arm is movable relative to the body independently of the second arm.

3. The hole cutter assembly of claim 1 , wherein the drill bit includes a shoulder that abuts the body to capture the body between the drill bit and the arbor.

4. The hole cutter assembly of claim 1 , wherein the body includes a first detent assembly that engages the first arm to releasably hold the first arm in a plurality of discrete positions, and a second detent assembly that engages the second arm to releasably hold the second arm in a plurality of discrete positions.

5. The hole cutter assembly of claim 1 , wherein the body defines a window, wherein the first arm includes indicia viewable through the window of the body, and wherein the indicia correspond to different sized diameter holes.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Steele Michael S
• Dennert Robb
• Ward Bryan C

Classifications

• B23B2270/30

  Chip guiding or removal · CPC title

• B23B47/34

  Arrangements for removing chips out of the holes made; Chip- breaking arrangements attached to the tool {(chip-breaking in turning machines B23B25/02; in turning tools B23B27/22)} · CPC title

• B23Q11/0071

  dust collectors for hand tools · CPC title

• Y10T408/50

  with product handling or receiving means · CPC title

• Y10T408/895

  Having axial, core-receiving central portion · CPC title