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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12542468 B1

PDFFull Text
Date of Patent:
Feb. 03, 2026

Filed:

Feb. 21, 2024

Power tool

Applicant:

Makita Corporation, Anjo, JP;

Inventors:

Katsuyuki Niinomi, Anjo, JP;

Takaya Yamada, Anjo, JP;

Kengo Umemura, Anjo, JP;

Assignee:

MAKITA CORPORATION, Anjo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Jose A Gonzalez Quinones

Int. Cl.
CPC ...
H02K 5/20 (2006.01); H02K 1/18 (2006.01); H02K 5/14 (2006.01); H02K 7/08 (2006.01); H02K 7/14 (2006.01); H02K 9/06 (2006.01); H02K 9/28 (2006.01); B24B 23/02 (2006.01); B24B 47/12 (2006.01); B25F 5/00 (2006.01);
U.S. Cl.
CPC ...
H02K 5/207 (2021.01); H02K 1/185 (2013.01); H02K 5/148 (2013.01); H02K 7/083 (2013.01); H02K 7/145 (2013.01); H02K 9/06 (2013.01); H02K 9/28 (2013.01); B24B 23/028 (2013.01); B24B 47/12 (2013.01); B25F 5/008 (2013.01); H02K 2205/09 (2013.01);
Abstract

A power tool includes a motor and a housing. The motor includes a rotor rotatable in one direction about a motor rotation axis and including a rotor shaft to which a fan and a commutator are fixed, a stator surrounding the rotor, and a carbon brush in contact with the commutator. The housing supports the stator and includes a cylinder, a bottom connected to the cylinder, a vent in the bottom, and a rib protruding from the bottom. P1<P2, where P1 is an opening ratio of the vent in a first section from a 0° to 90° position in a counter-rotation direction of the rotor, and P2 is an opening ratio of the vent in a second section from a 0° to 90° position in a forward-rotation direction of the rotor. The rib has an end in a first direction located in the first direction from the carbon brush.

Find Patent Forward Citations

Niinomi, Katsuyuki. (2026). Power tool (U.S. Patent No. 12542468). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12542468

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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