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:
Dec. 03, 2019
Filed:
Apr. 29, 2016
Clark Equipment Company, West Fargo, ND (US);
Gerald J. Duppong, Bismarck, ND (US);
Trevor W. Krause, Bismarck, ND (US);
Clark Equipment Company, West Fargo, ND (US);
Abstract
A ride control system for a power machine having a lift arm movably coupled to a frame. A hydraulic cylinder configured to selectively control movement of the lift arm relative to the frame. An accumulator is in selective communication with a first end of the hydraulic cylinder. A pressure sensor communicates a signal indicative of a hydraulic pressure at a first end of the hydraulic cylinder. A ride control circuit allows selective communication between the accumulator and the first end of the hydraulic cylinder. A controller receives the signal from the pressure sensor, and prevents communication between the accumulator and the first end of the hydraulic cylinder until the signal from the pressure sensor indicates a pressure below an initial pressure threshold value.