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:
May. 14, 2013
Filed:
Jan. 09, 2008
Naritoshi Ohtsukasa, Hiratsuka, JP;
Naritoshi Ohtsukasa, Hiratsuka, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
The present invention provides a hydraulic drive apparatus which can flexibly be set. The hydraulic drive apparatus which drives a variable displacement hydraulic motorby a pressure oil discharged from a variable displacement hydraulic pumpand outputs a driving force of the hydraulic motorto outside. The hydraulic drive apparatus includes torque upper limit setting unit which sets an upper limit of an output torque with respect to the hydraulic motor, and control unit which sets a maximum capacity limit value of the hydraulic motorin accordance with the upper limit of the output torque when the upper limit of the output torque is set by the torque upper limit setting unit, and which sets a maximum capacity limit value of the hydraulic pumpin accordance with the upper limit of the output torque.