Hole saw with depth stop
AssigneeGreenlee Textron Inc.
InventorWilliam F. Nordlin
Life of this patent
Estimating the term…
Abstract
A hole saw includes a depth stop for limiting the depth of penetration of the hole saw into a workpiece. The blade of the hole saw includes a plurality of slots, one of which is used to receive the depth stop. The depth stop is mounted to the blade by positioning a portion of the depth stop within the slot and sliding the depth stop from an unsecured position to a secured position. Once in the secured position, a locking member is moved within the depth stop to secure the depth stop in place. In use, the blade is advanced through the workpiece until the depth stop contacts the proximal surface of the workpiece.
Claims27
In combination, a hole saw and depth stop for forming a hole in a workpiece, comprising:
- a blade having a plurality of teeth at an end thereof;
- an interior surface, an exterior surface, and a slot extending through said blade from said interior surface to said exterior surface said blade defining a central axis of rotation, and
- a depth stop including a main body positioned proximate the exterior surface of said blade and an abutment portion extending from said main body and positioned within said slot of said blade, said main body and said abutment portion being integrally formed, wherein in use, said main body engages the workpiece to limit penetration of said blade through the workpiece.
A depth stop for use in connection with a hole saw having a slot therethrough and for limiting the penetration of the hole saw through a workpiece, the depth stop comprising:
- a main body having an end surface and a locking member passageway therethrough;
- an abutment portion extending from said main body and through the slot in the hole saw;
- a locking member capable of being inserted into said locking member passageway and being moveable therein;
- said depth stop capable of being within the slot in an unsecured position wherein said depth stop can slide within said slot, said depth stop capable of moving to a secured position wherein said abutment portion abuts an end of said slot and said locking member abuts an opposite end of said slot upon moving said locking member within said main body, and
- wherein, in use, said end surface of said main body abuts the workpiece to limit penetration of the hole saw into the workpiece.
A hole saw blade comprising:
- a wall having opposite ends, an exterior surface, and an interior surface;
- a plurality of teeth at one of said ends;
- a slot extending from said exterior surface to said interior surface, said slot having a first portion and a second portion, a width of said first portion is larger than a width of said second portion.
A method of attaching a depth stop to a hole saw used for forming a hole in a workpiece comprising:
- providing a hole saw blade having a wall having opposite ends, an exterior surface, an interior surface, a plurality of teeth at one of said ends, a slot extending from said exterior surface to said interior surface;
- providing a depth stop having a main body defining a locking member passageway, an abutment portion extending from said main body, and a locking member positioned within said locking member passageway, said locking member being moveable within said locking member passageway;
- positioning said abutment portion within said slot;
- sliding said depth stop within said slot so as to abut said abutment portion against an end of slot;
- and
- engaging said locking member through said locking member passageway until said locking member abuts an opposite end of said slot,
- wherein, in use, said main body abuts the workpiece to limit penetration of the hole saw into the workpiece.
Dependencies are inferred from the claim text.