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:
Sep. 11, 2001
Filed:
May. 17, 1999
Applicant:
Inventors:
Nobumi Yoshida, Tochigi, JP;
Hiroshi Endo, Tochigi, JP;
Assignee:
Komatsu Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16D 3/102 ;
U.S. Cl.
CPC ...
F16D 3/102 ;
Abstract
A discharged pressurized fluid of a primary hydraulic pump,driven by an engine,is supplied to an actuator,through an operating valve,. A first hydraulic rotary machine,for rotating a cooling fan,is driven to rotate by a returning pressurized fluid of the actuator,. A second hydraulic rotary machine,for rotating the cooling fan,is driven to rotate by the discharged pressurized fluid of an auxiliary hydraulic pump,which is driven by the engine,. By utilizing the returning pressurized fluid of the actuator,, the air blowing ability of the cooling fan is made high and the wasting of engine horse power is prevented.