ALEXANDRIA, Va., May 26 -- United States Patent no. 12,638,081, issued on May 26, was assigned to Schaeffler Technologies AG & Co. KG (Herzogenaurach, Germany).
"Sealing device and manufacturing method therefor" was invented by Yuelin Zhang (Taicang, China) and Xin Liu (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sealing device includes an annular elastic seal body and a rigid annular member, and the elastic seal body is fixed to the rigid annular member. The elastic seal body includes a base and at least one seal lip, and the seal lip extends from the base in a direction away from the base. The seal lip includes a foamed layer formed on a surface thereof. The foamed layer has a plurality of fo...