Percussion tool

Patent metadata

Field	Value
Publication number	US-11203105-B2
Application number	US-201916668631-A
Country	US
Kind code	B2
Filing date	Oct 30, 2019
Priority date	Jan 26, 2018
Publication date	Dec 21, 2021
Grant date	Dec 21, 2021

Abstract

A percussion tool, for performing a chiseling operation on a workpiece with a chisel, comprises a housing including a front side, and rear side, and opposite lateral sides extending between the front and rear sides, a first handle coupled to a first of the lateral sides of the housing, a second handle coupled to a second of the lateral sides of the housing, the first and second handles oriented coaxially along a handle axis, an electric motor positioned within the housing, a percussion mechanism driven by the motor and including a striker supported for reciprocation relative to the housing along a striker axis, and a light source that produces light to illuminate the workpiece. The chisel is configured to deliver repeated axial impacts to the workpiece in response to receiving repeated axial impacts from the striker.

First claim

What is claimed is:

1. A percussion tool for performing a chiseling operation on a workpiece with a chisel, the percussion tool comprising:
a housing including a front side, and rear side, and opposite lateral sides extending between the front and rear sides;
a first handle coupled to a first of the lateral sides of the housing;
a second handle coupled to a second of the lateral sides of the housing, the first and second handles oriented coaxially along a handle axis;
an electric motor positioned within the housing;
a percussion mechanism driven by the motor and including a striker supported for reciprocation relative to the housing along a striker axis;
a battery pack removably coupled to a battery receptacle formed on the front side of the housing for providing power to the electric motor when coupled to the battery receptacle; and
a light source that produces light to illuminate the workpiece,
wherein the light source is arranged on an underside of a ledge adjacent the battery receptacle,
wherein the chisel is configured to deliver repeated axial impacts to the workpiece in response to receiving repeated axial impacts from the striker.

2. The percussion tool of claim 1 , wherein the light source is a spot light.

3. The percussion tool of claim 1 , wherein the light source is a flood light.

4. The percussion tool of claim 1 , wherein the light source is an LED.

5. The percussion tool of claim 1 , further comprising a carrying handle on a bottom end of the housing and configured to be grasped during a non-operative state of the percussion tool, wherein the light source is one of a plurality of light sources, wherein a first of the plurality of light sources is located on a first side of the striker axis, and wherein a second of the plurality of light sources is located on a second side of the striker axis, and wherein the first and the second of the plurality of light sources is arranged proximate the carrying handle.

6. The percussion tool of claim 1 , wherein the light source is arranged on the front side of the housing and directed downwardly.

7. The percussion tool of claim 1 , further comprising a lens through which light produced by the light source is projected.

8. The percussion tool of claim 7 , wherein the lens is configured to reduce and/or increase a surface area of light projected on the workpiece by the light source.

9. A percussion tool for performing a chiseling operation on a workpiece with a chisel, the percussion tool comprising:
a housing including a front side, and rear side, and opposite lateral sides extending between the front and rear sides;
a first handle coupled to a first of the lateral sides of the housing;
a second handle coupled to a second of the lateral sides of the housing, the first and second handles oriented coaxially along a first axis;
an electric motor positioned within the housing;
a battery pack removably coupled to a battery receptacle formed on the front side of the housing for providing power to the electric motor when coupled to the battery receptacle; and
a percussion mechanism driven by the motor and including a striker supported for reciprocation relative to the housing along a second axis transverse to the first axis;
a first light source located on a first side of the second axis; and
a second light source located on a second side of the second axis, each of the first and second light sources being offset from the second axis, and each of the first and second light sources producing light to illuminate the workpiece,
wherein each of the first and second light sources are arranged on an underside of a ledge adjacent the battery receptacle,
wherein the chisel is configured to deliver repeated axial impacts to the workpiece in response to receiving repeated axial impacts from the striker.

10. The percussion tool of claim 9 , wherein the first and second light sources are spot lights.

11. The percussion tool of claim 9 , wherein the first and second light sources are flood lights.

12. The percussion tool of claim 9 , wherein the first and second light sources are LEDs.

13. The percussion tool of claim 9 , wherein the first light source is a spot light, the second light source is a flood light.

14. The percussion tool of claim 9 , wherein the light sources are arranged on the front side of the housing.

15. The percussion tool of claim 9 , further comprising a first lens through which light produced by the first light source is projected and a second lens through which the light produced by the second light source is projected.

16. The percussion tool of claim 15 , wherein the first and second lenses are configured to reduce and/or increase a surface area of light projected on the workpiece by the first and second light sources.

17. A percussion tool for performing a chiseling operation on a workpiece with a chisel, the percussion tool comprising:
a housing including a front side, and rear side, and opposite lateral sides extending between the front and rear sides;
a first handle coupled to a first of the lateral sides of the housing;
a second handle coupled to a second of the lateral sides of the housing, the first and second handles oriented coaxially along a first axis;
an electric motor positioned within the housing;
a battery pack removably coupled to a battery receptacle formed on the front side of the housing for providing power to the electric motor when coupled to the battery receptacle;
a percussion mechanism driven by the motor and including a striker supported for reciprocation relative to the housing along a second axis transverse to the first axis;
a first light source located on the front side of housing and on a first side of the second axis;
a second light source located on the front side of the housing and on a second side of the second axis, each of the first and second light sources being offset from the second axis, and each of the first and second light sources producing light to illuminate the workpiece;
a first lens through which light produced by the first light source is projected; and
a second lens through which the light produced by the second light source is projected,
wherein each of the first and second light sources is arranged on an underside of a ledge adjacent the battery receptacle,
wherein the chisel is configured to deliver repeated axial impacts to the workpiece in response to receiving repeated axial impacts from the striker.

18. The percussion tool of claim 17 , wherein the first and second lenses are configured to reduce and/or increase a surface area of light projected on the workpiece by the first and second light sources.

19. The percussion tool of claim 18 , wherein the first and second light sources are spot lights.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Van Hoorn Andrew D
• Gee Kevin R

Classifications

• H01M50/247

  specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers · CPC title

• B25D11/005 Primary

  Arrangements for adjusting the stroke of the impulse member or for stopping the impact action when the tool is lifted from the working surface · CPC title

• B25D2250/201

  for speed, e.g. drilling or percussion speed · CPC title

• B25D17/24

  Damping the reaction force {(resiliently mounted handles B25D17/043; dampers in connections of hammers to backhoes E02F3/966)} · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title