Hole saw
AssigneeMilwaukee Electric Tool Corporation
InventorMichael Naughton
Life of this patent
Estimating the term…
Abstract
A hole saw that includes a saw body including a circular cutting edge having a cutting edge diameter, and the saw body is coupled to a guide member for rotation with the guide member. A pilot is coupled to the guide member for movement relative to the guide member and the saw body, and the pilot includes an outer guide surface having a diameter that increases in a direction from a second end portion of the guide member toward a first end portion of the guide member. The pilot is coupled to the guide member such that at least a portion of the outer guide surface extends past the circular cutting edge of the saw body in a direction from the first end portion of the guide member toward the second end portion of the guide member.
Claims20
A hole saw configured for use with a rotary power tool, the hole saw comprising:
- a guide member including a first end portion and a second end portion, the first end portion configured to couple the hole saw to the rotary power tool;
- a saw body including a circular cutting edge having a cutting edge diameter, the saw body coupled to the guide member for rotation with the guide member;
- and
- a pilot coupled to the guide member for movement relative to the guide member and the saw body in a direction from the second end portion of the guide member toward the first end portion of the guide member, the pilot including an outer guide surface having a diameter that increases in the direction from the second end portion of the guide member toward the first end portion of the guide member,
- wherein the pilot is coupled to the guide member such that at least a portion of the outer guide surface extends past the circular cutting edge of the saw body in a direction from the first end portion of the guide member toward the second end portion of the guide member.
A hole saw operable to cut an aperture having a first diameter into a work-piece, the work-piece having a guide aperture having a second diameter less than the first diameter, the hole saw comprising:
- a guide member including a first end portion and a second end portion and a longitudinal axis that extends centrally through the guide member through the first end portion and the second end portion;
- a saw body including a circular cutting edge having a cutting edge diameter, the saw body coupled to the guide member for rotation with the guide member about the longitudinal axis of the guide member;
- a pilot coupled to the guide member for movement relative to the guide member and the saw body in a direction from the second end portion of the guide member toward the first end portion of the guide member parallel to the longitudinal axis of the guide member, the pilot including an outer guide surface having a diameter that increases in the direction from the second end portion of the guide member toward the first end portion of the guide member parallel to the longitudinal axis of the guide member,
- wherein the pilot is coupled to the guide member such that the pilot is configured to be received in the guide aperture of the work-piece to position the circular cutting edge of the saw body concentric with the guide aperture.
Dependencies are inferred from the claim text.