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:
Dec. 01, 2020
Filed:
Mar. 25, 2019
Nanjing Chervon Industry Co., Ltd., Nanjing, CN;
Chervon (Hk) Limited, Wanchai, HK;
Jianpeng Guo, Nanjing, CN;
Maohui Li, Nanjing, CN;
Fangjie Nie, Nanjing, CN;
Toshinari Yamaoka, Nanjing, CN;
Nanjing Chervon Industry Co., Ltd., Nanjing, CN;
CHERVON (HK) LIMITED, Wanchai, HK;
Abstract
A grass trimmer includes a trimming head, a driving device for driving the trimming head to rotate so as to cut vegetation, and an operating device for use in controlling the driving device. The trimming head includes a spool and a line holding element formed with a line holding structure. The driving device includes a motor. The grass trimmer has an auto-winding mode. In the auto-winding mode, the motor drives at least one of the spool and the line holding element to make the spool and the line holding element rotate relatively so that a trimming line is wound on the spool automatically.