Cutting accessory for a drill
Assignee9492-3521 Inc.
InventorMarco Carbone
Life of this patent
Estimating the term…
Abstract
A sawing accessory for a drill, which includes a cutting member that is connected to the drill for axial rotation about an axis of rotation. The cutting member has a plate and two or more blades connected to the plate. The blades depend from the plate. The blades are curved inwardly towards the axis of rotation. A spring arrangement interconnects the blades and is connected to the cutting member. The cutting member is configured such that a rotational cutting force which is applied to a workpiece sheet creates a curved cut in the sheet.
Claims19
A sawing accessory for a drill, comprising:
- a cutting member connected to the drill for axial rotation about an axis of rotation, the cutting member having a plate and at least two blades connected to the plate and depending away therefrom, the blades being inwardly curved towards the axis of rotation;
- and
- a resilient member interconnecting the blades, the resilient member being connected to the cutting member, the cutting member being configured such that a rotational cutting force being applied to a workpiece sheet creates a curved cut into the sheet, the resilient member is configured such that the blade tips move towards the axis of rotation when the blades cut through the workpiece sheet.
A saw accessory for a drill for cutting a circular hole in a workpiece sheet, the accessory comprising:
- a cutting member connected to the drill for axial rotation about an axis of rotation, the cutting member having a plate and a plurality of blades connected to the plate and depending downwardly therefrom, the blades being inwardly curved towards the axis of rotation;
- a resilient member interconnecting the blades, the resilient member being connected to the cutting member;
- and
- a cup connected to the drill, the cup being disposed around the cutting member, the cup having a cup sidewall, the cup sidewall being curved inwardly towards the axis of rotation, the cutting member being configured such that a rotational cutting force being applied to the workpiece sheet creates a curved cut into the sheet, the resilient member is configured such that the blade tips move towards the axis of rotation when the blades cut through the workpiece sheet.
A saw accessory for a drill for cutting a circular hole in a workpiece sheet, the accessory comprising:
- a cutting member connected to the drill for axial rotation about an axis of rotation, the cutting member having a plate and a plurality of blades connected to the plate and depending downwardly therefrom, the blades being inwardly curved towards the axis of rotation;
- a resilient member interconnecting the blades, the resilient member being connected to the cutting member, the resilient member is configured such that the blade tips move towards the axis of rotation when the blades cut through the workpiece sheet;
- and
- a cup connected to the drill, the cup being disposed around the cutting member, the cup having a cup sidewall, the cup sidewall being curved inwardly towards the axis of rotation, the cutting member being configured such that a rotational cutting force being applied to the workpiece sheet creates a curved cut into the sheet, the cup having a seal located around the cup end to sealingly contact the workpiece sheet to stop dust and particulate material.
Dependencies are inferred from the claim text.