ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,818, issued on May 13, was assigned to Poclain Hydraulics Industrie (France).
"Sealing device for a hydraulic machine" was invented by Julien Engrand (Verberie, France), Gilles Grillon (Verberie, France) and Stephane Quertelet (Verberie, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic machine has a first assembly and a second assembly movable in rotation relative to each other along an axis of rotation. The hydraulic machine has a crankcase defining an internal volume, in which an interface between the fixed assembly and the movable assembly has a housing provided with a first sealing element ensuring the sealing of the internal vo...