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. 16, 2024
Filed:
May. 06, 2021
Zoomlion Heavy Industry Na, Inc., Yorkville, WI (US);
Zoomlion Heavy Industry Science and Technology Co., Ltd., Changsha, CN;
Mir H. Azam, Mount Pleasant, WI (US);
Javad Saberi Shakib, Greenfield, WI (US);
Guy A. Moore, West Allis, WI (US);
Calvin Tyler, Yorkville, WI (US);
ZOOMLION HEAVY INDUSTRY NA, INC., Yorkville, WI (US);
ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY CO., LTD., Changsha, CN;
Abstract
An electrical method for centering telehandler rear wheels preferably includes an electronic control module (ECM), a rear steering cylinder, a pair of rear centering valves, a front steering cylinder, a steer mode valve, at least one steering position sensor, a steering control unit and a mode selection switch. The front and rear steering cylinders are connected to the steer mode valve. The steering control unit directs hydraulic fluid from a hydraulic pump to flow into the front and rear steering cylinders to turn the wheels. A 2W steering mode requires that the rear wheels be straight before going from a 4W steering mode into the 2W steering mode. The ECM monitors a position of the rear wheels through the at least one steering position sensor. If the wheels are not straight, the ECM will open a centering valve to straighten the rear wheels, before going into the 2W steering mode.