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. 22, 2021
Filed:
Jul. 18, 2018
Lg Electronics Inc., Seoul, KR;
Jaeheon Chung, Seoul, KR;
Seaunglok Ham, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
Disclosed is a cleaner including a first body having a cleaning unit, a second body configured to move autonomously, and a sensing module including at least one first sensor disposed on the first body and at least one second sensor disposed on the second body, the sensing module sensing a variable distance between the first sensor and the second sensor. Any one of a number of the at least one first sensor and a number of the at least one second sensor is two or more, and the sensing module senses two variable distances by two different combinations of one first sensor and one second sensor. The cleaner further includes a controller configured to control the second body to follow the first body based on the two variable distances.