US Patent Issued to FSI North America on March 25 for "Mechanical seal assembly with double-sealing properties and low pressure area" (Pennsylvania Inventor)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,968, issued on March 25, was assigned to FSI North America Inc. (Coraopolis, Pa.).

"Mechanical seal assembly with double-sealing properties and low pressure area" was invented by William Haywood (Monongahela, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mechanical seal of the cartridge type. A rotary subassembly includes a sleeve, the sleeve packed against and adapted to be in sealing disposition with a pump shaft of a pump. A stationary subassembly is for attachment to a stuffing box of the pump, the stationary subassembly including a gland, the gland having a front face and a back face and a gland lip extending from the back face. A lip s...