ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,826, issued on May 13, was assigned to BURCKHARDT COMPRESSION AG (Winterthur, Switzerland).

"Throttle arrangement for piston compressors" was invented by Norbert Feistel (Ellikon a.d. Thur, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A throttle arrangement for sealing a sliding surface of a body in a piston compressor the throttle arrangement having annular sealing discs and a sealing disc holder having an L-shaped radial section having a first leg running in the axial direction and a second leg running transversely, the second leg being annular and having a bearing surface pointing in the direction of the high-pressure side, the seal...