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. 10, 2022
Filed:
Oct. 22, 2020
Zoomlion Heavy Industry Na, Inc., Yorkville, WI (US);
Zoomlion Heavy Industry Science and Technology Co. Ltd., Changsha, CN;
Robert Dellemann, Waterford, WI (US);
Guy A. Moore, West Allis, WI (US);
Robert Willard, Yorkville, WI (US);
ZOOMLION HEAVY INDUSTRY NA, INC., Yorkville, WI (US);
ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY CO, LTD., Changsha, CN;
Abstract
A hydraulic lockout lever failure detection system preferably includes a first analog sensor, a second analog sensor, at least one electronic control module (ECU) and a solenoid valve. The voltage output level of the first and second analog sensors is monitored by the ECU. The solenoid valve controls the flow of hydraulic fluid to operate an excavator or other equipment. The operation of the solenoid valve is controlled by the ECU. However, a second ECU may be used to control the operation of the solenoid valve. A hydraulic lockout lever causes the first and second analog sensors to output either a low voltage to indicate a closed position, or to indicate an open position to the ECU. If the first and second analog sensors output a voltage that is above a low set value or above a high set value, a fault is detected.