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:
Mar. 15, 1994
Filed:
Dec. 30, 1992
Jang W Lee, Busan, KR;
Goldstar Co., Ltd., Seoul, KR;
Abstract
This invention relates to an obstacle sensing apparatus for a self-propelled cleaning robot which is capable of accurately sensing the position of an obstacle without the influence of ultrasonic directivity, and which comprises mounting members (22) disposed at both sides of the front portion of a body(11) of the robot; each made of a three-sided plate including a central portion facing forwardly of the body(11), one side portion bent at an angle of 90.degree. relative to the central portion, and one side portion inclined at an angle of 45.degree. relative to the central portion; ultrasonic distance-measuring means disposed in each portion of each mounting member(22) and an ultrasonic distance-measuring circuit (27) to which the ultrasonic elements are connected; and control means for judging presence and absence of an obstacle on the basis of the output of the ultrasonic distance-measuring means, thereby controlling the direction of travel of the body(11).