The Boeing Company

Robert J Hawk

Patrick Joseph McCormick

Mark William Lesyna

Patrick M Fahey

Paul R Smith

Matthew D Uhlman

Barry D Hance

Christopher P Beamis

Ellen A Pifer

Herbert Guttler

Ali Abdelmagid

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.

Hydraulic fluid warming system and method

Growing community of inventors

Seattle, WA, United States of America

Robert J Hawk