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. 31, 2023
Filed:
May. 28, 2021
Danfoss Power Solutions Ii Technology A/s, Nordborg, DK;
Meng (Rachel) Wang, Eden Prairie, MN (US);
Michael Berne Rannow, Eden Prairie, MN (US);
Danfoss Power Solutions II Technology A/S, Nordborg, DK;
Abstract
A hydraulic system () and method for reducing boom dynamics of a boom (), while providing counter-balance valve protection, includes a hydraulic actuator (), first and second counter-balance valves (), first and second control valves (), and first and second blocking valves (). A net load () is supported by a first chamber () of the hydraulic actuator, and a second chamber () of the hydraulic actuator may receive fluctuating hydraulic fluid flow from the second control valve to produce a vibratory response () that counters environmental vibrations () on the boom. The first blocking valve prevents the fluctuating hydraulic fluid flow from opening the first counter-balance valve. The first blocking valve may drain leakage from the first counter-balance valve.