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:
Oct. 23, 2018
Filed:
Mar. 26, 2015
Husqvarna Ab, Huskvarna, SE;
Jonathan Björn, Jönköping, SE;
Anders Sjögren, Forserum, SE;
HUSQVARNA AB, Huskvarna, SE;
Abstract
A robotic work tool system () comprising a robotic work tool () comprising a lift/collision detection sensor (), said lift/collision detection sensor () comprising a polarity element () and at least a first sensing element (') and a second sensing element (″), wherein the polarity element () has a first and a second polarity and wherein the first and second sensing elements are configured to each sense a polarity of the first polarity element (). The robotic work tool () is configured to detect a polarity change in the first sensing element (′) and in the second sensing element (″) and in response thereto determine that a lift has been detected, or detect a polarity change in the first sensing element (′) but not in the second sensing element (″) and in response thereto determine that a collision has been detected.