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. 17, 2015
Filed:
Jan. 31, 2012
Troy Hottmann, Oconomowoc, WI (US);
Mooyoung Lee, Milwaukee, WI (US);
Joseph Colwell, Hubertus, WI (US);
Michael Linstroth, Port Washington, WI (US);
Troy Hottmann, Oconomowoc, WI (US);
Mooyoung Lee, Milwaukee, WI (US);
Joseph Colwell, Hubertus, WI (US);
Michael Linstroth, Port Washington, WI (US);
Harnischfeger Technologies, Inc., Wilmington, DE (US);
Abstract
A method of controlling a digging operation of an industrial machine. The industrial machine includes a dipper connected to a dipper handle, a hoist rope attached to the dipper, and a hoist motor moving the hoist rope and the dipper. The method includes determining that the dipper is ready to be unloaded, activating a secondary tipping control operation by controlling a speed of the hoist motor, controlling an acceleration ramp rate of the hoist motor, and controlling a deceleration ramp rate of the hoist motor. The method further includes determining when the dipper is unloaded and deactivating the secondary tipping control operation.