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:
Feb. 09, 2021
Filed:
Dec. 07, 2015
Husqvarna Ab, Huskvarna, SE;
Mikael Larsson, Jönköping, SE;
Henrik Eklund, Tenhult, SE;
HUSQVARNA AB, Huskvarna, SE;
Abstract
A hand-held power tool comprising an internal combustion engine (), a working tool (), a centrifugal clutch (), and a control system () is disclosed. The engine () has a clutch-in speed, above which the engine () drives the working tool (). The control system () comprises a rotation speed sensor (), and a speed limitation controller (), which is configured to limit an engine speed at a limitation speed below the clutch-in speed. It is active or activated during a starting procedure of the internal combustion engine (). The control system () is configured to deactivate the speed limitation controller () upon sensing at least one acceleration at a level above the limitation speed and sensing at least one deceleration at a level above the limitation speed, such that the engine () is rotatable above the limitation speed to drive the working tool ().