ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,979, issued on Nov. 18, was assigned to EagleBurgmann Germany GmbH & Co. KG (Wolfratshausen, Germany).
"Mechanical seal arrangement" was invented by Ferdinand Werdecker (Walchensee, Germany) and Andreas Fesl (Otterfing, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a mechanical seal arrangement for sealing a process chamber (6), which is filled with a non-toxic, gaseous process medium, with respect to a bearing chamber (8), comprising a first mechanical seal (2) with a rotating slide ring (20) having a first sliding surface (20a) and a stationary slide ring (21) having a second sliding surface (21a), which define a ...