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. 07, 2002
Filed:
Dec. 15, 2000
David J. Rocke, Eureka, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A method and system for automatically controlling a work implement of an earthmoving machine, the work implement including a bucket, to capture, lift and dump material, the bucket being controllably actuated by a hydraulic tilt cylinder and at least one hydraulic lift cylinder, based on discrete values of torque is disclosed. The control system includes a torque indicating mechanism that provides a representative value for an amount of torque applied to the wheels of the earthmoving machine, an electronic controller for receiving the representative torque value from the torque indicating mechanism and determining if the representative value of torque received from the torque indicating mechanism exceeds a first predetermined value and then responsively generating a first command signal, and a hydraulic implement controller for controlling hydraulic fluid flow to the hydraulic tilt cylinder in a predetermined sequence activated in response to the first command signal with the hydraulic tilt cylinder controllably actuating the bucket of the earthmoving machine in order to remove material from a pile.