ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,209,669, issued on Jan. 28, was assigned to EagleBurgmann Germany GmbH & Co. KG (Wolfratshausen, Germany).
"Mechanical seal assembly with abrasion optimization" was invented by Sylvia Breun (Berg, Germany) and Christian Eisfeld (Wolfratshausen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a mechanical seal assembly comprising a mechanical seal (2) having a rotating slide ring (3) with a sliding surface (3a) and a stationary slide ring (4) with a sliding surface (4a) defining a sealing gap (5) therebetween, wherein one of the slide rings is designed as a wearing slide ring and has a hardness lower than the other one of ...