# US 11,027,392 B1 · Compact multi-material cut-off tool

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- Number: US 11,027,392 B1
- Document ID: US11027392B1
- Status: Granted
- Kind: B1
- Application number: 16/858,973
- Filed: 2020-04-27
- Granted: 2021-06-08
- Earliest claimed: 2020-04-27
- Assignees: Techtronic Cordless GP
- Applicants: Techtronic Cordless Gp
- Inventors: Ronald C. McCurry; Adam Gathers; Kyle B. Yeomans; Brian D. Mertel; M. Grayson Jacoway; Brandon L. Hicks; Jesse J. Jerabek; Nicholas S. Norton
- Web page: https://patentgrep.com/patent/US11027392B1

## CPC

- B24B 23/02: with rotating grinding tools; Accessories therefor
- B23D 45/16: Hand-held sawing devices with circular saw blades
- B23D 47/12: of drives for circular saw blades
- B27B 9/00: Portable power-driven circular saws for manual operation (details or components, e.g. handles, casings, of portable power-driven tools not particularly related to the operation performed B25F5/00)
- F21V 33/008: {Leisure, hobby or sport articles, e.g. toys, games or first-aid kits; Hand tools; Toolboxes}
- F21V 33/0084: {Hand tools; Toolboxes}
- F21Y 2115/10: Light-emitting diodes [LED]
- B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B23D: PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR (making toothed gears or the like B23F; cutting metal by applying heat locally B23K; arrangements for copying or controlling B23Q)
- B27B: SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR (saws specially adapted for pruning or debranching A01G3/08; sawing apparatus specially adapted for felling trees A01G23/091; features not restricted to a particular type of wood saw B23D, e.g. attaching saw blades B23D51/00; machine tool frames, beds, pillars or like members, in general B23Q1/01)
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A compact multi-material cut-off tool includes a housing, and an arbor rotatably supported by the housing upon which a cutting disk is attachable for co-rotation therewith. A motor is coupled to the arbor to provide torque thereto. A controller is operable to selectively drive the motor in a first rotational direction and an opposite, second rotational direction. A first lighting element is coupled to a first portion of the housing, and a second lighting element is coupled to a second portion of the housing. One of the first lighting element and the second lighting element is configured to be activated by the controller in response to the motor being driven in the first rotational direction. The other of the first lighting element and the second lighting element is configured to be activated by the controller in response to the motor being driven in the second rotational direction.

## Claims

### Claim 1

A cut-off tool comprising:
a housing;
an arbor rotatably supported by the housing upon which a cutting disk is attachable for co-rotation therewith;
a motor coupled to the arbor to provide torque thereto;
a controller operable to selectively drive the motor in a first rotational direction and an opposite, second rotational direction for selectively rotating the arbor and the cutting disk in the first rotational direction or the second rotational direction, respectively;
a first lighting element coupled to a first portion of the housing; and
a second lighting element coupled to a second portion of the housing,
wherein one of the first lighting element and the second lighting element is configured to be activated by the controller in response to the motor being driven in the first rotational direction, and wherein the other of the first lighting element and the second lighting element is configured to be activated by the controller in response to the motor being driven in the second rotational direction.

### Claim 2 (depends on 1)

The cut-off tool of claim 1, further comprising a forward/reverse selector shuttle coupled to the housing, wherein the forward/reverse selector shuttle is movable between a first position and a second position corresponding to the first rotational direction and the second rotational direction, respectively.

### Claim 3 (depends on 2)

The cut-off tool of claim 2, wherein the controller is operable to drive the motor in the first rotational direction or the second rotational direction in response to the forward/reverse selector shuttle being in the first position or the second position, respectively.

### Claim 4 (depends on 3)

The cut-off tool of claim 3, further comprising a trigger electrically connected with the controller to provide an input to the controller, and wherein, based on the input, the controller is configured to selectively activate the motor and one of the first lighting element or the second lighting element.

### Claim 5 (depends on 1)

The cut-off tool of claim 1, further comprising a cutting disk attachable to the arbor for co-rotation therewith, wherein the first lighting element is configured to illuminate a workpiece behind the cutting disk, and wherein the second lighting element is configured to illuminate the workpiece in front of the cutting disk.

### Claim 6 (depends on 1)

The cut-off tool of claim 1, wherein the housing includes a motor housing portion and a handle portion extending therefrom, and wherein the first lighting element is positioned proximate an end of the handle portion that is opposite the motor housing portion, and the second lighting element is positioned on the motor housing portion.

### Claim 7 (depends on 6)

The cut-off tool of claim 6, further comprising a cutting disk attachable to the arbor for co-rotation therewith, wherein the motor housing portion includes an outer surface extending between a first end and a second end of the motor housing portion, wherein the cutting disk is rotatably supported on the arbor adjacent the second end, and wherein the second lighting element is positioned on the outer surface proximate the second end.

### Claim 8 (depends on 6)

The cut-off tool of claim 6, wherein the housing further includes a battery receiving portion positioned adjacent the end of the handle portion, and wherein the first lighting element is positioned on the battery receiving portion.

### Claim 9 (depends on 8)

The cut-off tool of claim 8, wherein the battery receiving portion includes a surface facing toward the motor housing portion, and wherein the first lighting element is positioned on the surface.

### Claim 10 (depends on 6)

The cut-off tool of claim 6, further comprising a cutting disk attachable to the arbor for co-rotation therewith, wherein the first lighting element is configured to illuminate a workpiece behind the cutting disk, and wherein the second lighting element is configured to illuminate the workpiece in front of the cutting disk.

### Claim 11

A cut-off tool comprising:
a housing including a motor housing portion and a handle portion extending therefrom;
an arbor rotatably supported by the housing;
a cutting disk attachable to the arbor for co-rotation therewith;
a motor positioned within the motor housing portion, the motor coupled to the arbor to provide torque thereto;
a first lighting element positioned proximate an end of the handle portion that is opposite the motor housing portion; and
a second lighting element positioned on the motor housing portion,
wherein the first lighting element is configured to illuminate a workpiece behind the cutting disk, and wherein the second lighting element is configured to illuminate the workpiece in front of the cutting disk,
wherein the housing further includes a battery receiving portion positioned adjacent the end of the handle portion, and
wherein the first lighting element is positioned on the battery receiving portion.

### Claim 12 (depends on 11)

The cut-off tool of claim 11, wherein the battery receiving portion includes a surface facing toward the motor housing portion, and wherein the first lighting element is positioned on the surface.

### Claim 13 (depends on 11)

The cut-off tool of claim 11, wherein the motor housing portion includes an outer surface extending between a first end and a second end of the motor housing portion, wherein the cutting disk is rotatably supported on the arbor adjacent the second end, and wherein the second lighting element is positioned on the outer surface proximate the second end.

### Claim 14 (depends on 11)

The cut-off tool of claim 11, further comprising a controller operable to selectively drive the motor in a first rotational direction and an opposite, second rotational direction for selectively rotating the arbor and the cutting disk in the first rotational direction or the second rotational direction, respectively, and wherein one of the first lighting element and the second lighting element is configured to be activated by the controller in response to the motor being driven in the first rotational direction, and wherein the other of the first lighting element and the second lighting element is configured to be activated by the controller in response to the motor being driven in the second rotational direction.

### Claim 15 (depends on 14)

The cut-off tool of claim 14, further comprising a forward/reverse selector shuttle coupled to the housing, wherein the forward/reverse selector shuttle is movable between a first position and a second position corresponding to the first rotational direction and the second rotational direction, respectively.

### Claim 16 (depends on 15)

The cut-off tool of claim 15, wherein the controller is operable to drive the motor in the first rotational direction or the second rotational direction in response to the forward/reverse selector shuttle being in the first position or the second position, respectively.

### Claim 17 (depends on 16)

The cut-off tool of claim 16, further comprising a trigger electrically connected with the controller to provide an input to the controller, and wherein, based on the input, the controller is configured to selectively activate the motor and one of the first lighting element or the second lighting element.

### Claim 18 (depends on 11)

The cut-off tool of claim 11, wherein the handle extends along a longitudinal axis, and wherein each of the first lighting element and the second lighting element is oriented at an oblique angle relative to the longitudinal axis such that each of the first lighting element and the second lighting element is configured to project light away from the housing and toward a workpiece being cut.

### Claim 19 (depends on 11)

The cut-off tool of claim 11, wherein the first lighting element is positioned to illuminate a workpiece to one side of the cutting disk, and wherein the second lighting element is positioned to illuminate a workpiece on an opposite side of the cutting disk.