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:
Jan. 06, 1998
Filed:
Dec. 10, 1996
Jin Han Lee, Changwon, KR;
Jeong Chul Lee, Changwon, KR;
Abstract
A control system of an excavator. The excavator includes a lower running body, an upper pivoting body, a working device having a plurality of links attached to the upper pivoting body, a pivoting device, and a running device, actuators for actuating the working device, the pivoting device, and the running device, hydraulic control valves for controlling quantities of hydraulic fluid supplied to the actuators, sensors for detecting relative angular positions of the links, and a control system. The control system includes a pair of manipulating devices each of which can be manipulated in at least three directions so as to output electrical signals proportional to deviated amounts in selected directions among the directions from a neutral position thereof, a switch board on which a plurality of function switch are installed, for outputting a signal in accordance with a selected function and displaying the selected function, a control section for controlling quantifies of hydraulic fluid supplied to the hydraulic cylinders and the hydraulic motors by receiving signals from the manipulating device, the switch board, and the angle detecting sensors and transferring the signals to the hydraulic control valves.