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:
Sep. 29, 2026
Filed:
Oct. 31, 2022
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Teppei Saitoh, Tokyo, JP;
Ryu Narikawa, Tokyo, JP;
Tadashi Nishizawa, Tokyo, JP;
Hideaki Itou, Tokyo, JP;
Hidefumi Ishimoto, Tokyo, JP;
Kei Satou, Tokyo, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
In a work machine, when on a travel plane S of crawler belts, a straight line passing through a predicted travel point Pa given distance from the crawler belts and having a maximum climbing angle is assumed to be a first line L, and a line connecting an installation position of a distance sensor and the predicted travel point Pis assumed to be a second line L. The distance sensor measures a distance to a ground surface on the second straight line L. A controller calculates a height Hof a predicted travel region T based on a result of the distance sensor and a detection result of a turning angle sensor, and determines whether a height difference Hbetween a height Hof the predicted travel region T and a height Hof the travel plane S is equal to or greater than a threshold.