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. 27, 2020
Filed:
May. 02, 2018
The Boeing Company, Chicago, IL (US);
Matthew D. Uhlman, Kirkland, WA (US);
Barry D. Hance, Woodinville, WA (US);
Herbert Guttler, Mukilteo, WA (US);
Robert J. Hawk, Seattle, WA (US);
Paul Smith, Seattle, WA (US);
Patrick Fahey, Snohomish, WA (US);
Ellen A. Pifer, Seattle, WA (US);
Christopher P. Beamis, Mukilteo, WA (US);
Ali Abdelmagid, Bellevue, WA (US);
Patrick McCormick, Mukilteo, WA (US);
Mark W. Lesyna, Everett, WA (US);
THE BOEING COMPANY, Chicago, IL (US);
Abstract
A hydraulic system (e.g., of an aircraft or other vehicle) includes a pump, a pressure line coupled to the pump and configured to distribute pressurized hydraulic fluid, and a return line configured to return hydraulic fluid to a reservoir. The hydraulic system also includes an auxiliary leakage valve coupled to the pressure line, to the return line, and to an actuator. The auxiliary leakage valve is configured to receive a control signal and, based on the control signal, selectively open a restricted fluid path. The restricted fluid path couples the pressure line to the return line to allow a restricted amount of the hydraulic fluid to flow from the pressure line to the return line.