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.

Date of Patent:
Jun. 04, 2024

Filed:

Mar. 03, 2022
Applicant:

Globe (Jiangsu) Co., Ltd., Changzhou, CN;

Inventors:

Zefeng Wei, Changzhou, CN;

Biao Li, Changzhou, CN;

Xian Zhuang, Changzhou, CN;

Assignee:

Globe (Jiangsu) Co., Ltd., Changzhou, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01); G01R 15/14 (2006.01); G01R 19/165 (2006.01); G08B 5/36 (2006.01); G08B 21/18 (2006.01); B23D 59/00 (2006.01); H02M 3/00 (2006.01);
U.S. Cl.
CPC ...
G01R 19/16523 (2013.01); G01R 15/144 (2013.01); G08B 5/36 (2013.01); G08B 21/182 (2013.01); H02J 7/0047 (2013.01); H02J 7/0063 (2013.01); B23D 59/001 (2013.01); H02J 2207/20 (2020.01); H02M 3/00 (2013.01);
Abstract

The disclosure provides a power tool, a detection circuit and a detection method of a load state thereof. The detection circuit of the power tool includes: a main control unit, a sampling resistor, a voltage sampling unit and an alarm display unit. The sampling resistor is arranged on a driving loop of a motor. The voltage sampling unit is used to sample a voltage across the sampling resistor. The alarm display unit is connected with the main control unit. The main control unit is configured to control the alarm display unit to execute a preset display state according to a voltage signal across the sampling resistor sampled by the voltage sampling unit.


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