Integrated dust extractor and power tool

Patent metadata

Field	Value
Publication number	US-12269136-B2
Application number	US-202318397146-A
Country	US
Kind code	B2
Filing date	Dec 27, 2023
Priority date	Apr 1, 2021
Publication date	Apr 8, 2025
Grant date	Apr 8, 2025

Abstract

A handheld power tool includes a housing, a tool receptacle disposed on a first end of the housing and configured to receive a tool accessory, a motor positioned within the housing and operatively coupled to the tool receptacle to drive the tool accessory, and a dust collection assembly integrated within the housing. The dust collection assembly includes a fan disposed within the housing and operatively coupled to the motor. The fan is configured to generate a suction airflow due to rotation of the motor, and a dust container removably coupled to the housing of the power tool. The dust container is configured to collect dust and other debris generated by the tool accessory during operation of the handheld power tool.

First claim

What is claimed is:

1. A handheld power tool comprising:
a housing;
a tool receptacle disposed on a first end of the housing and configured to receive a tool accessory;
a motor positioned within the housing and operatively coupled to the tool receptacle to drive the tool accessory; and
a dust collection assembly integrated within the housing, the dust collection assembly including:
a fan disposed within the housing and operatively coupled to the motor, the fan configured to generate a suction airflow due to rotation of the motor,
a dust container removably coupled to the housing of the power tool, the dust container configured to collect dust and other debris generated by the tool accessory during operation of the handheld power tool, and

a dust tube disposed adjacent the tool accessory, the dust tube configured to draw dust and debris into the dust container, and
a transfer tube extending between the dust tube and the dust container, the transfer tube including at least a portion positioned internal to the housing of the power tool.

2. The handheld power tool of claim 1 , wherein the dust collection assembly further comprises a depth stop coupled to the housing of the power tool, the depth stop configured to limit one or both the extension or retraction of the dust tube.

3. The handheld power tool of claim 1 , wherein the dust tube is an over-bit dust tube.

4. The handheld power tool of claim 1 , wherein the dust container extends at least partially into the housing of the power tool.

5. The handheld power tool of claim 4 , further comprising a filter in fluid communication with the dust container, the filter configured to separate the dust and other debris from the suction airflow as the airflow travels from the dust container into the housing of the power tool.

6. The handheld power tool of claim 5 , wherein the filter is removably coupled to the dust container, and wherein the dust container is not securable to the housing when the filter is removed from the dust container.

7. The handheld power tool of claim 5 , wherein the fan is positioned between the motor and the filter, and wherein the motor, the fan, and the filter are aligned along a motor axis, and wherein a rotational axis of the fan is coaxial with the motor axis.

8. The handheld power tool of claim 5 , further comprising a filter cleaning mechanism positioned within the housing of the power tool, the filter cleaning mechanism configured to remove debris trapped in the filter.

9. The handheld power tool of claim 8 , further comprising a controller positioned within the housing, the controller configured to control the motor and the filter cleaning mechanism.

10. The handheld power tool of claim 9 , wherein the controller automatically actuates the filter cleaning mechanism based on an actuation state of the power tool.

11. The handheld power tool of claim 1 , wherein the tool accessory defines a first axis, the motor defines a second axis, and wherein the first axis is oriented transversely relative to the second axis.

12. The handheld power tool of claim 11 , wherein an angle between the first axis and the second axis is 90 degrees.

13. A handheld power tool comprising:
a housing;
a tool receptacle disposed on a first end of the housing and configured to receive a tool accessory;
a motor positioned within the housing and operatively coupled to the tool receptacle to drive the tool accessory; and
a dust collection assembly integrated within the housing, the dust collection assembly including:
a fan disposed within the housing and operatively coupled to the motor, the fan configured to generate a suction airflow due to rotation of the motor,
a dust tube disposed adjacent the tool accessory, the dust tube configured to draw in dust and debris, and
a transfer tube extending between the dust tube and a dust container, the transfer tube including at least a portion positioned internal to the housing of the power tool.

14. The handheld power tool of claim 13 , wherein the dust collection assembly further comprises a depth stop coupled to the housing of the power tool.

15. The handheld power tool of claim 14 , wherein the depth stop includes a plunge depth stop to limit the retraction of the dust tube.

16. The handheld power tool of claim 15 , wherein the depth stop includes extension stop to limit the extension of the dust tube.

17. A handheld power tool comprising:
a housing;
a tool receptacle disposed on a first end of the housing and configured to receive a tool accessory;
a motor positioned within the housing and operatively coupled to the tool receptacle to drive the tool accessory; and
a dust collection assembly integrated within the housing, the dust collection assembly including:
a fan disposed within the housing and operatively coupled to the motor, the fan configured to generate a suction airflow due to rotation of the motor,
a dust container removably coupled to the housing of the power tool, the dust container configured to collect dust and other debris generated by the tool accessory during operation of the handheld power tool, and
a filter removably coupled to the dust container,
wherein the dust container is securable to the housing only when the filter is secured to the dust container.

18. The handheld power tool of claim 17 , further comprising a filter cleaning mechanism positioned within the housing of the power tool, the filter cleaning mechanism configured to remove debris trapped in the filter.

19. The handheld power tool of claim 18 , wherein the filter cleaning mechanism physically impacts the filter to clean the filter.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Marsh Julia C
• Bloom-Edmonds John
• Spraggon Jeffery D
• Van Hoorn Andrew Delmar
• Johnson Iii Allen H
• O'Gorman Amedee Brennan

Classifications

• H02K9/10

  by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing · CPC title

• B25D17/20

  Devices for cleaning or cooling tool or work · CPC title

• B01D46/68

  by means acting on the cake side involving movement with regard to the filter elements · CPC title

• B01D46/46

  automatic · CPC title

• B01D46/0043

  containing fixed gas displacement elements or cores · CPC title