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:
Jan. 23, 2018
Filed:
Feb. 20, 2013
Husqvarna Ab, Huskvarna, SE;
HUSQVARNA AB, Huskvarna, SE;
Abstract
A robotic work tool system (), comprising a charging station (), a boundary wire (), a signal generator () for generating and transmitting a signal through said boundary wire () for demarcating a work area () and for generating a magnetic field () for guiding a robotic work tool () to said charging station (), said robotic work tool () being configured to detect a magnetic field strength of the magnetic field () in the work area (), direct itself towards an increasing magnetic field strength, determine that the robotic work tool () is unable to reach the charging station (), inform the robotic work tool system () accordingly, whereby the robotic work tool system () is configured to adapt a current level of the signal generating the magnetic field ().