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. 08, 2002
Filed:
Jun. 02, 1999
Nobuo Matsuyama, Sakado, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
A travel assisting hydraulic circuit for a hydraulic drive type working vehicle with enhanced general versatility, in which the traveling assisting circuit during travel at a high speed can be configured to be a simple circuit. For this purpose, in a hydraulic drive type working vehicle including a traveling HST circuit having a traveling pump driven by the power of an engine, and a traveling motor driven by the pressurized oil from the traveling pump, in which the output torque of the traveling motor is transmitted to a drive wheel via a speed reducer, the traveling assisting hydraulic circuit includes an assisting pump driven by the power of the engine, and an assisting motor for outputting the torque generated by being driven by the pressurized oil from the assisting pump to the speed reducer to add the torque to the output torque of the traveling motor.