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:
Apr. 27, 2021
Filed:
Sep. 16, 2016
Hitachi Construction Machinery Tierra Co., Ltd., Koka, JP;
Abstract
To achieve saving of fuel consumption and noise reduction by adopting a hybrid type and miniaturizing an engine and to ensure safe and reliable battery charging in a case in which a charge amount of a battery is quite insufficient, a hydraulic work machine includes: a gate lock sensor (); a forced charging switch (); a work machine monitor () that notifies an operator that a charging rate of a battery () falls to be lower than a critical charging rate; and a machine controller (). The machine controller () actuates a generator motor () as a generator to forcedly charge the battery () when a gate lock lever () is operated to a lock position (D), an engine control dial () designates a low idle engine speed, and the forced charging switch () is operated.