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:
Oct. 10, 2000
Filed:
Aug. 10, 1999
James Thomas Noonan, Johnston, IA (US);
Paul David Parker, Ankeny, IA (US);
Deere & Company, Moline, IL (US);
Abstract
An implement lift with a plurality of individual electrohydraulically controlled lift cylinders spaced on a tool frame includes a bypass system for facilitating continued implement operation in the event of a failure of the electronics or wiring. The system includes an electrically controlled valve at each cylinder normally operated by an electronic controller but manually lockable in an open position if there is a circuit failure so the operator can control the implement from the tractor selective control valve (SCV). Hydraulic hoses with quick disconnects compatible with both the tractor SCV connections and the main electrohydraulic valve on the tractor are connected to the tractor valve for normal automatic operation but can be easily rerouted to the SCV connections for control by the SCV when the cylinder valves are manually locked in the open position.