ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,768,449, issued on Oct. 20, was assigned to AKTIEBOLAGET SKF (Gothenburg, Sweden).
"Sealing structure" was invented by Yi Zhang (Shanghai), Yuanzeng Ding (Wuhu, China) and Juergen Netzer (Burscheid, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sealing structure includes an inner sealing ring with a first stepped portion having an L-shaped cross section and a second stepped portion having an L-shaped cross section, the first stepped portion being connected to the second stepped portion and an outer sealing ring having a circumferential annular groove with an axially extending first side wall and an axially extending second side wall. The firs...