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:
May. 16, 2006
Filed:
Jan. 06, 2005
Youji Asano, Gifu, JP;
Nobuaki Shimizu, Gifu, JP;
Haruo Kodama, Gifu, JP;
Nabtesco Corporation, Tokyo, JP;
Abstract
An electrohydraulic actuation system in which the quantity of fluid being fed to hydraulic actuators under higher load pressure among those of a plurality of electrohydraulic actuators can be prevented from becoming deficient. In the electrohydraulic actuation system (), a selection valve (), a two-position valve (), a spring () and a hydraulic cylinder () for altering delivery alter delivery of the working oil of a variable delivery hydraulic pump () based on the maximum pressure of the working oil being fed to hydraulic motors () and the delivery pressure of working pump (), and pressure gauges () and a computer (not shown) alter the rotatim speeds of motors () at a substantially same rate for them.