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:
Jun. 02, 2015
Filed:
Dec. 12, 2013
Irobot Corporation, Bedford, MA (US);
Paul E. Sandin, Brookline, NH (US);
Joseph L. Jones, Acton, MA (US);
Daniel N. Ozick, Newton, MA (US);
David A. Cohen, Brookline, MA (US);
David M. Lewis, Jr., Tyngsboro, MA (US);
Clara Vu, Cambridge, MA (US);
Zivthan A. Dubrovsky, Waltham, MA (US);
Joshua B. Preneta, Billerica, MA (US);
Jeffrey W. Mammen, Westford, MA (US);
Duane L. Gilbert, Goffstown, NH (US);
Tony L. Campbell, Stoneham, MA (US);
John Bergman, River Falls, WI (US);
iRobot Corporation, Bedford, MA (US);
Abstract
A robot lawnmower includes a body and a drive system carried by the body and configured to maneuver the robot across a lawn. The robot also includes a grass cutter and a swath edge detector, both carried by the body. The swath edge detector is configured to detect a swath edge between cut and uncut grass while the drive system maneuvers the robot across the lawn while following a detected swath edge. The swath edge detector includes a calibrator that monitors uncut grass for calibration of the swath edge detector. In some examples, the calibrator comprises a second swath edge detector.