Patent · US Active

Grass trimmer

US11219159B2 · kind B2 · utility

0Cited by

14References

8Claims

0Family size

Assignee

Chervon (HK) Limited · CN

Inventors

Feng Yuan · Nanjing, CN
Ming Peng · Nanjing, CN
Jianpeng Guo · Nanjing, CN
Zichun Tang · Nanjing, CN

Key dates

Filing date	Nov 25, 2019
Grant date	Jan 11, 2022
Priority date	—
Expiry date	Feb 25, 2040

Classification

Technology area (CPC A)Human Necessities
CPC primaryA01D34/81
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A grass trimmer includes a cutting head for mounting a cutting member, a drive head having a output shaft for driving the cutting head to rotate, and an anti-winding member for preventing the output shaft from being wound to by grass. The drive head includes a drive device to drive the output shaft and a head housing for accommodating the drive device. The output shaft connects to the cutting head and passes through the anti-winding member and the anti-winding member is mounted to the cutting head so as to rotate with the cutting head and is disposed between the cutting head and the head housing so as to fill the space between the cutting head and the head housing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.