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:
Jan. 15, 2008
Filed:
Dec. 10, 2003
Masamichi Tanaka, Tsuchiura, JP;
Yoshimi Shiba, Shimotsuma, JP;
Tadashi Shiohata, Ibaraki-ken, JP;
Kentaro Hashimoto, Tsuchiura, JP;
Masamichi Tanaka, Tsuchiura, JP;
Yoshimi Shiba, Shimotsuma, JP;
Tadashi Shiohata, Ibaraki-ken, JP;
Kentaro Hashimoto, Tsuchiura, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A self-propelled crushing machine comprises a crushing device; a hydraulic drive system including a crushing device hydraulic motorfor driving the crushing device, a first hydraulic pumpfor driving the crushing device hydraulic motor, and an enginefor driving the first hydraulic pump; a pressure sensorfor detecting a load condition of the crushing device; and a controller″ for executing control to increase a revolution speed of the enginein accordance with a detected signal from the pressure sensor. Accordingly, even when a heavy load is imposed on the crushing device, a reduction of crushing efficiency can be prevented.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile