ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,928, issued on May 13, was assigned to GEA Tuchenhagen GmbH (Buchen, Germany).
"Drive for a valve and method" was invented by Matthias Sudel (Ratekau, Germany) and Jens Burmester (Grambek, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A drive that is drivable by a pressure medium is described. The drive is used for a valve that can be used in hygienic applications. The drive includes a drive housing, in which a main piston is movable along a stroke direction by the action of the pressure medium and can be coupled to a rod, and a stop for limiting a movement of the main piston. To improve the drive, it is proposed that an additional piston i...