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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 12528385 B1

PDFFull Text
Date of Patent:
Jan. 20, 2026

Filed:

Jun. 03, 2024

Electric working machine and method of activating electric working machine

Applicant:

Kubota Corporation, Osaka, JP;

Inventors:

Daiki Tamba, Sakai, JP;

Tsunehiro Il, Sakai, JP;

Shunya Takase, Sakai, JP;

Assignee:

KUBOTA CORPORATION, Osaka, JP;

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Rexford N Barnie

Assistant Examiner:

Xuan undefined Ly

Int. Cl.
CPC ...
B60L 58/18 (2019.01); E02F 9/20 (2006.01); G01R 31/00 (2006.01); G01R 31/367 (2019.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01); H01M 50/204 (2021.01); H01M 50/249 (2021.01); H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
B60L 58/18 (2019.02); E02F 9/2091 (2013.01); G01R 31/007 (2013.01); G01R 31/367 (2019.01); H01M 10/425 (2013.01); H01M 10/4285 (2013.01); H01M 10/482 (2013.01); H01M 50/204 (2021.01); H01M 50/249 (2021.01); H02J 7/0063 (2013.01); H02J 7/0069 (2020.01); B60L 2200/40 (2013.01); E02F 9/2095 (2013.01); H01M 2010/4271 (2013.01); H01M 2220/20 (2013.01);
Abstract

An electric working machine includes an electric device, electric circuitry, battery packs to be connected sequentially to the electric device such that they are connected in parallel, and a controller. The electric circuitry includes external relays corresponding to the respective battery packs. The controller is configured or programmed to specify each battery pack as being a battery pack requiring a test process to examine opening and closing actions of internal relay(s) of the battery pack or a battery pack not requiring the test process, and in connecting the battery packs to the electric device, perform the test process on battery pack(s) that have been specified as requiring the test process to examine the opening and closing actions, and not perform the test process on battery pack(s) that have been specified as not requiring the test process to examine the opening and closing actions.

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