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:
Feb. 08, 2005
Filed:
May. 16, 2001
Applicant:
Hideaki Yoshimatsu, Hyogo, JP;
Inventor:
Hideaki Yoshimatsu, Hyogo, JP;
Assignee:
Kobelco Construction Machinery Co., Ltd., Hiroshima, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D005/02 ; F16D031/02 ;
U.S. Cl.
CPC ...
Abstract
First and second hydraulic pumps each adapted to operate plural actuators are activated by separate electric motors respectively. In accordance with signals provided from a controller on the basis of operations of levers, the number of revolutions of the electric motor and that of the electric motor are controlled each independently and simultaneously to control the discharge rates of both hydraulic pumps.