# US 12,759,128 B2 · Electric work equipment

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,759,128 B2
- Document ID: US12759128B2
- Status: Granted
- Kind: B2
- Application number: 19/188,159
- Filed: 2025-04-24
- Published: 2025-12-04
- Granted: 2026-10-13
- Earliest claimed: 2024-05-31
- Assignees: Yamabiko Corporation
- Applicants: Yamabiko Corporation
- Inventors: Masayuki Takano; Takeshi Maeno; Yuji Numakunai
- Web page: https://patentgrep.com/patent/US12759128B2

## CPC

- B25F 5/026: {in the form of an auxiliary handle (B25F5/024 takes precedence)}
- B27B 17/0008: {Means for carrying the chain saw, e.g. handles (B27B17/0033 takes precedence)}
- B27B 17/02: Chain saws equipped with guide bar (B27B17/06 takes precedence)
- B25F: COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR {(machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass B23P23/00 and subgroups)}
- 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)

## Abstract

Electric work equipment includes a body case, a work tool formed to protrude forward from a front portion of the body case, a motor housed in the body case and configured to drive the work tool, a battery removably disposed in the body case and configured to supply power to the motor, a handle protruding from the body case and configured to be gripped, a trigger lever disposed on a lower surface of the handle and configured such that power is supplied from the battery to the motor when pulled, and a switch panel disposed on an upper surface of the handle and including a power switch, the power switch being configured to make the motor operable when turned on and to stop operation of the motor when turned off, and is inclined downward from a right to left side thereof or from the left to right side thereof.

## Claims

### Claim 1

Electric work equipment, comprising:
a body case having a first side and a second side opposite to each other in a plan view;
a work tool formed to protrude forward from a front portion of the body case;
a motor housed in the body case and configured to drive the work tool;
a battery removably disposed in the body case and configured to supply power to the motor;
a handle protruding from the body case and configured to be gripped;
a trigger lever disposed on a lower surface of the handle and configured such that the power is supplied from the battery to the motor when the trigger lever is operated;
a side handle mounted on a side surface located at only the second side of the body case, the side handle extending around a perimeter of the body case such that the side handle is not mounted on the side surface located at the first side of the body case; and
a switch panel disposed on an upper surface of the handle, the switch paned including a power switch and an indicator light, the power switch being configured to make the motor operable when the power switch is an ON state and to stop operation of the motor when the power switch is an OFF state, the indicator light indicating the ON and OFF states of the power switch, wherein
a top surface of the switch panel is inclined downward from the first side of the body case to the second side of the body case, and
the power switch is located closer to the second side of the body case than the indicator light.

### Claim 2 (depends on 1)

The electric work equipment according to claim 1, wherein the power switch is disposed to be closer to the second side of the body case than an axis extending in a front-rear direction and passing through the center in a left-right direction of the handle.

### Claim 3 (depends on 1)

The electric work equipment according to claim 1, wherein the power switch is disposed on an axis extending in a front-rear direction and passing through the center in a left-right direction of the handle.

### Claim 4 (depends on 1)

The electric work equipment according to claim 1, wherein the power switch is disposed in a position that does not overlap a position of the trigger lever in the plan view.

### Claim 5 (depends on 1)

The electric work equipment according to claim 1, wherein the top surface of the switch panel is a curved surface.

### Claim 6 (depends on 1)

The electric work equipment according to claim 1, wherein the electric work equipment is a chainsaw.