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:
Aug. 11, 2009
Filed:
Jun. 03, 2003
Ulf Petersson, Tollered, SE;
Bengt-allan Bergvall, Jönköping, SE;
Ulf Petersson, Tollered, SE;
Bengt-Allan Bergvall, Jönköping, SE;
Husqvarna AB, Huskvarna, SE;
Abstract
The present disclosure relates to an arrangement and an electronic navigational control system for a self-propelling device (), preferably a lawn-mowing robot. The system comprises at lease one navigational control system () connected to at least one signal generator () and a sensing unit arranged at the self-propelling device (). The sensing unit senses at least one, in the air medium propagating, time and space varying magnetic field, at least transmitted via the navigational control station () and in turn retransmits at least one signal processed by the unit to at least one driving source which contributes to the device's movements across the surface. The system comprises structure by which the signal generator () sends a current through the navigational control station (), the current generating the time and space varying magnetic field, whereby the sensing unit comprises structure by which the device () is maneuvered based on the properties of the sensed magnetic field.