Patent · US Active

Hand-held electrically powered cut-off tool with a kickback mitigation function

US12103201B2 · kind B2 · utility

0Cited by

20References

20Claims

0Family size

Assignee

HUSQVARNA AB · SE

Inventors

Magnus Rosén · Hagfors, SE
Victor Johansson · Malmö, SE
David Dufke · Veberöd, SE
Johan Berg · Alingsås, SE

Key dates

Filing date	Sep 13, 2021
Grant date	Oct 1, 2024
Priority date	—
Expiry date	Sep 13, 2041

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB27G19/04
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A hand-held electrically powered cut-off tool (100) for cutting concrete and stone by a rotatable cutting disc (105), the cut-off tool (100) comprising an electric motor (130) arranged to be controlled by a control unit (110) via a motor control interface (120), wherein the control unit (110) is arranged to obtain data indicative of an angular velocity of the cutting disc (105), and to detect a kickback condition based on a decrease in angular velocity, and wherein the control unit (110) is arranged to electromagnetically brake the electric motor (130) in response to detecting a kickback condition.

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