Patent · US Active

Balanced housing construction for flexible line trimmer head

US11470772B2 · kind B2 · utility

2Cited by

5References

21Claims

0Family size

Assignee

Echo Incorporated · US

Inventors

Joseph John Zenkus · Lake in the Hills, US
Stephen J. Towner · Libertyville, US
Ryan Garrett · Buffalo Grove, US

Key dates

Filing date	Dec 18, 2018
Grant date	Oct 18, 2022
Priority date	—
Expiry date	Aug 11, 2041

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/72
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A housing having a rotary axis and configured to support at least one radially projecting cutting component that effects cutting as the housing is turned around the rotary axis. The housing has a first housing part with a first wall and a plurality of discrete circumferentially spaced cavities in the first wall and each having a volume. The volumes of at least a first and second of the cavities respectively at first and second locations are different and strategically selected to cause a mass distribution on the housing that contributes to improved dynamic balancing of the housing as the housing is turned around the rotary axis.

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