Patent · US Active

Automatic line feed for trimmer

US10918015B2 · kind B2 · utility

0Cited by

23References

15Claims

0Family size

Assignee

HUSQVARNA AB · SE

Inventors

Johan Hallendorff · Jönköping, SE
Tomas Wykman · Säter, SE
Stefan Kullberg · Jönköping, SE
Rickard Skogward · Huskvarna, SE

Key dates

Filing date	Oct 6, 2016
Grant date	Feb 16, 2021
Priority date	—
Expiry date	Oct 6, 2036

Classification

Technology area (CPC A)Human Necessities
CPC primaryA01D34/4163
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A trimmer head arranged to be driven to rotate a trimmer line, where the trimmer head includes a housing and an inner body connected to a trimmer line spool. The inner body is arranged to be movable relative the housing so that a trimmer line spooled around the trimmer line spool is released and pulled out by a centrifugal force caused by the rotation of the trimmer head, thereby allowing feed of the trimmer line. The trimmer further includes drive means for driving the trimmer head to rotate, and the trimmer is arranged to cause a relative movement of the inner body relative the housing by changing the rotation speed of the trimmer head.

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