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US 8,221,037 B2Granted
Cutting tool
AssigneeMilwaukee Electric Tool Corporation
InventorRoger D. Neitzell
Life of this patent
Estimating the term…
Abstract
A cutting tool for cutting a workpiece. The cutting tool can include a tool body having a first end and a second end and defining an axis extending through the first and second ends, a rim extending circumferentially around the first end of the tool body, and a blade having a base supported on the tool body for movement relative to the rim.
Claims30
A cutting tool for cutting a workpiece, the cutting tool comprising:
- a tool body having a first end and a second end and defining an axis extending through the first and second ends;
- a rim extending circumferentially around the first end of the tool body;
- and
- a blade having a base supported on the tool body for movement relative to the rim,
- wherein the blade is configured to automatically move radially inward with respect to at least a portion of the rim during rotation of the tool body about the axis, and wherein the blade is configured to automatically move radially outward with respect to the portion of the rim when rotation of the tool body about the axis stops.
2 more elements
A cutting tool for cutting a workpiece, the cutting tool comprising:
- a tool body having a first end and a second end and defining an axis extending through the first and second ends;
- a rim extending circumferentially around the first end of the tool body;
- a first portion of the tool body being moveable radially relative to a second portion of the tool body;
- and
- a blade supported on the first portion for movement with the first portion to define a cutting path having a circumference smaller than a circumference of a cutting path of the second portion of the tool body,
- wherein the tool body includes a pair of openings extending through the tool body on opposite sides of the blade and generally parallel to the axis to at least partially separate the first portion from the second portion.
3 more elements
A method of cutting a workpiece with a cutting tool, the cutting tool including a tool body, the method comprising the acts of:
- positioning a rim extending circumferentially around an end of the tool body adjacent to the workpiece;
- engaging a blade supported on the tool body with the workpiece;
- rotating the cutting tool to cut the workpiece;
- automatically moving the blade radially inward with respect to at least a portion of the rim during rotation of the cutting tool;
- and
- automatically moving the blade radially outward with respect to the portion of the rim when rotation of the cutting tool stops.
3 more elements
A method of cutting a workpiece with a cutting tool, the cutting tool including a tool body having a first end and a second end and defining an axis extending through the first end and second end, the method comprising the acts of:
- positioning a rim extending circumferentially around the first end of the tool body adjacent to the workpiece;
- engaging a blade supported on the tool body with the workpiece;
- driving the cutting tool into the workpiece to cut a plug from the workpiece;
- automatically moving the blade and a first portion of the tool body radially inward relative to a second portion of the tool body in response to driving the cutting tool into the workpiece;
- and
- automatically moving the blade and the first portion of the tool body radially outwardly relative to the second portion of the tool body.
3 more elements
A cutting tool for cutting a workpiece, the cutting tool comprising:
- a tool body having a first end and a second end and defining an axis extending through the first and second ends;
- a rim extending circumferentially around the first end of the tool body;
- a first portion of the tool body being moveable radially relative to a second portion of the tool body;
- and
- a blade supported on the first portion for movement with the first portion to define a cutting path having a circumference smaller than a circumference of a cutting path of the second portion of the tool body,
- wherein the tool body includes a pair of openings extending through the tool body in a direction generally parallel to the rim to at least partially define the first portion including the blade, the first portion being moveable relative the tool body.
3 more elements
A cutting tool for cutting a workpiece, the cutting tool comprising:
- a tool body having a first end and a second end and defining an axis extending through the first and second ends;
- a rim extending circumferentially around the first end of the tool body;
- a first portion of the tool body being moveable radially relative to a second portion of the tool body;
- and
- a blade supported on the first portion for movement with the first portion to define a cutting path having a circumference smaller than a circumference of a cutting path of the second portion of the tool body,
- wherein the tool body includes an opening extending through the tool body in a direction generally parallel to the rim to at least partially separate the first portion from the second portion.
3 more elements
A cutting tool for cutting a workpiece, the cutting tool comprising:
- a tool body having a first end and a second end and defining an axis extending through the first and second ends;
- a rim extending circumferentially around the first end of the tool body;
- a first portion of the tool body being moveable radially relative to a second portion of the tool body;
- a blade supported on the first portion for movement with the first portion to define a cutting path having a circumference smaller than a circumference of a cutting path of the second portion of the tool body;
- and
- a protrusion extending outwardly from a radially exterior side of the tool body for selective engagement with the workpiece to bias the first portion of the tool body supporting the blade radially inwardly relative to the second portion of the tool body.
3 more elements
Dependencies are inferred from the claim text.