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. 16, 2004
Filed:
Feb. 10, 2003
Kazunori Yoshino, Tokyo, JP;
Shin Caterpillar Mitsubishi Ltd., Tokyo, JP;
Abstract
The invention relates to a hydraulic control apparatus for a construction machine. The hydraulic control apparatus includes a target velocity table ( ) which stores target actuation velocities of a hydraulic actuator ( ) corresponding to operation amounts of the operation member ( ) to be operated by the operator, a target acceleration table ( ) which stores target actuation accelerations of the hydraulic actuator ( ) corresponding to operation amounts of the operation member ( ), and one of the target velocity table ( ) and the target acceleration table ( ) can be selected by operation of a selection switch ( ) by the operator. Further, by the control means, the target value corresponding to the operation amount of the operation member ( ) using the table selected by the selection switch ( ), and a control valve ( ) for controlling the pressure oil supplying amount from a hydraulic pump ( ) to the hydraulic actuator ( ) is controlled based on the set target value. Consequently, the operation characteristic of the hydraulic actuator ( ) can be changed in accordance with the liking of the operator.