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.:
Date of Patent:
Apr. 11, 2023
Filed:
Apr. 22, 2020
Applicant:
Nanjing Chervon Industry Co., Ltd., Nanjing, CN;
Inventors:
Chao Xian, Nanjing, CN;
Jifeng Feng, Nanjing, CN;
Assignee:
Nanjing Chervon Industry Co., Ltd., Nanjing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/04 (2006.01); H02P 1/28 (2006.01); H02P 27/08 (2006.01); A01D 34/00 (2006.01); A01D 101/00 (2006.01);
U.S. Cl.
CPC ...
A01D 34/006 (2013.01); H02P 1/04 (2013.01); H02P 1/28 (2013.01); H02P 27/08 (2013.01); A01D 2101/00 (2013.01);
Abstract
A power tool includes a motor and a power supply for supplying power to the motor. A driving circuit is connected to the motor. A voltage detection unit is used for detecting the voltage of the motor. A controller is configured to perform the following operations: if the motor voltage is greater than or equal to a preset voltage, the driving circuit will apply a voltage to the motor with a second slope, wherein the value range of the second slope is from 0 to 0.3. The disclosure also discloses a control method for starting under load of a power tool.