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:
Nov. 23, 1999
Filed:
Jun. 04, 1997
Hideki Kinugawa, Hiroshima, JP;
Masayuki Komiyama, Hiroshima, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Abstract
There are provided with an electric motor driven by a battery, a hydraulic pump driven by the electric motor, a proximal actuator for actuating a working member by working oil from the hydraulic pump, a hydraulic motor for moving a working machine body, and an operating lever which can be operated between a neutral position and an operating position. There are provided with a control valve capable of cutting off a supply of working oil to the proximal actuator in a state where operating lever is positioned at an operating position, and a battery capacity sensor for detecting the capacity of the battery. There is provided a controller for outputting a control signal for cutting off a supply of working oil to the proximal actuator to the switching control valve in a state where the battery capacity value detected by the battery capacity sensor is at a level lower than a preset battery capacity reference value. It is possible to positively prevent the machine from being immoved at the working site.