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:
Nov. 05, 2024
Filed:
Sep. 10, 2020
Nanjing Chervon Industry Co., Ltd., Nanjing, CN;
Jianpeng Guo, Nanjing, CN;
Nanjing Chervon Industry Co., Ltd., Nanjing, CN;
Abstract
A trimmer head includes a spool configured to rotate about a rotation axis. The spool is provided with a plurality of first transmission teeth. A head housing accommodates at least a part of the spool. The head housing is provided with a plurality of second transmission teeth for engaging with the plurality of first transmission teeth. When the trimmer head rotates about the rotation axis and along a predetermined direction, the plurality of first transmission teeth engage with the plurality of second transmission teeth to transmit force between the head housing and the spool. The force acts on a point of action of the head housing or the spool to drive the head housing and the spool to rotate synchronously along the predetermined direction.