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US 7,246,975 B2Granted
Hole saw with replaceable cutting tip
OwnerChris Corso, Terry M. Corsoinventors
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Abstract
A device for cutting a hole, such as in sheet metal is provided. The device includes an axially rotatably cylindrical body that is operable with a rotatable drive. A distal end portion of the body includes a replaceable cutting tip and a replaceable pilot. The cutting tip is secured within a notch in the body and extends distally from the distal end portion. A shank portion is also provided which is adapted for securement within a rotational drive mechanism, such as a hand held drill.
Claims10
A hole cutting device comprising:
- a body defining an axis and having a distal end portion terminating in a distal edge, the body having a substantially cylindrical exterior;
- the distal end portion defining an interior, the interior defining a distal recess extending proximally from the distal edge, the distal end portion further defining a notch, wherein the notch extends less than the full length of the body in the axial direction of the body and extends farther in the axial direction than the distal recess;
- a cutting tip detachably securable with said notch, a portion of the cutting tip extending distally from said distal edge;
- a pilot member detachably secured with the body along said axis and extending from said distal end portion, said pilot member adapted to align the cylindrical body;
- and
- a shank member integral with the body;
- the shank member extending from a proximal end of the body along the axis, the shank member adapted for engagement with a rotational drive.
4 more elements
A device for cutting a hole in sheet metal, the device comprising:
- a rotatable cylindrical body defining a longitudinal axis, the body having a lead edge portion and an engagement end portion;
- the lead edge portion defining an interior recess defining a frustoconical portion, and a notch, wherein the notch extends less than the full length of the body in the axial direction and extends farther along the longitudinal axis of the body than the interior recess;
- a pilot drill bit detachably secured within the interior recess along said axis and extending from the lead edge portion, said pilot drill bit adapted to align the cylindrical body;
- a detachable cutting tip securable with the notch, a cutting edge of the cutting tip extending distally from said lead edge portion;
- and
- a shank member integral with the body;
- the shank member extending axially from the engagement end of the body, the shank member adapted for engagement with a rotational drive.
4 more elements
Dependencies are inferred from the claim text.