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.

Date of Patent:
Sep. 01, 2026

Filed:

Sep. 09, 2022
Applicants:

Parker Hannifin Emea S.à.r.l., Etoy, CH;

Parker-hannifin Corporation, Cleveland, OH (US);

Inventors:

Dennis Allen, Eagle River, WI (US);

Tommy Claeson, Fristad, SE;

Johan Hansson, Stenstorp, SE;

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B62D 5/00 (2006.01); B62D 5/09 (2006.01); F15B 13/043 (2006.01); F15B 13/08 (2006.01);
U.S. Cl.
CPC ...
B62D 5/003 (2013.01); B62D 5/091 (2013.01); F15B 13/043 (2013.01); F15B 13/08 (2013.01); F15B 2211/8757 (2013.01);
Abstract

A hydraulic system comprising: a hydraulic fluid pressure source, a hydraulic fluid reservoir, a hydraulically driven actuator having a first chamber and a second chamber, and a valve assembly having a first pilot-operated directional control valve and a second pilot-operated directional control valve, each including: an inlet port fluidly connected for receiving high-pressure hydraulic fluid from the hydraulic fluid pressure source, an outlet port fluidly connected for draining hydraulic fluid to the hydraulic fluid reservoir, a first actuator port fluidly coupled with the first chamber of the hydraulically driven actuator, a second actuator port fluidly coupled with the second chamber of the hydraulically driven actuator; first to fourth fail-safe solenoid-controlled pilot valves; and a pilot pressure fluid supply system.


Find Patent Forward Citations

Allen, Dennis. (2026). Redundant hydraulic system (U.S. Patent No. 12722687). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12722687

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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