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:
Jul. 05, 2011
Filed:
May. 24, 2007
Masao Yoshioka, Nagano, JP;
Masao Yoshioka, Nagano, JP;
Takeuchi Mfg. Co., Ltd., , JP;
Abstract
A crawler type power shovel vehicle () operated by a hydraulic actuator (), constructed from an electric motor () for driving a hydraulic pump () for supplying hydraulic oil to the hydraulic actuator (), a battery () for supplying direct current power, an inverter () for operating the electric motor () by converting the direct current power into alternating current power and supplying it to the motor, a controller () for causing the inverter () to control operation of the electric motor (), and a voltage/current sensor () for detecting the magnitude of a load current flowing from the battery () into the inverter (). The controller () stops the motor () when the magnitude of the load current detected by the voltage/current sensor () continuously exceeds a predetermined threshold for a predetermined time period.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile