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:
Dec. 31, 2002
Filed:
Feb. 21, 2002
Applicant:
Inventors:
Masashi Takai, Gifu, JP;
Naoto Shima, Aichi, JP;
Fumihide Kozuma, Kanagawa, JP;
Norimasa Amano, Kanagawa, JP;
Noboru Shimizu, Tokyo, JP;
Assignee:
Kayaba Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B62D 5/06 ;
U.S. Cl.
CPC ...
B62D 5/06 ;
Abstract
For an energy-saving type control, a value of a control low rate QP controlled by a flow control valve V is closer to a value of a flow rate required by an output side such as a power cylinder , a steering valve or the like, to suppress a driving torque of a pump P. An excitation current I of a solenoid SOL is specified on the basis of a solenoid current instruction value I based on a steering torque and a solenoid current instruction value I defining a standby flow rate.