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. 06, 2023
Filed:
Nov. 08, 2018
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Shinji Ishihara, Tokyo, JP;
Hiroshi Sakamoto, Tsuchiura, JP;
Hidekazu Moriki, Tokyo, JP;
Ryu Narikawa, Tokyo, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
A construction machine that can make a depressing force of a bucket during compaction work to be uniform without requiring an operator to perform a complicated operation is provided. A controllerdetermines whether or not compaction work is in progress, calculates a front distance R that represents a distance between a rotational pivot of a boomand a predetermined position B in a back surface of a bucket, determines a target velocity of the bucket such that a velocity with which the bucket approaches a leveling target surface decreases with increasing values of the front distance, and, during the compaction work, notifies the operator of details of an operation of operation devicesandfor achieving the target velocity of the bucket or controls hydraulic actuatorstoso as to achieve the target velocity of the bucket.