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:
Nov. 19, 2002
Filed:
Apr. 20, 2000
Applicant:
Inventor:
Yuuichi Yamamoto, Oyama, JP;
Assignee:
Komatsu Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01P 9/00 ;
U.S. Cl.
CPC ...
F01P 9/00 ;
Abstract
A target fan rotation speed FAN is set corresponding to the temperature T sensed by a cooling water temperature sensing unit. A capacity control unit (controller, EPC valve )is then used to control the capacity of a hydraulic pump (or a hydraulic motor) so that the fan rotation speed N of the cooling fan becomes the target fan rotation speed FAN . In this way, when the cooling fan is driven by a hydraulic source, it can be driven with optimal energy efficiency and noise can be controlled to a minimum.
Quick Actions:
Yamamoto, Yuuichi. (2002). Cooling fan drive control device (U.S. Patent No. 6481388). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6481388
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile