ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,444, issued on July 7, was assigned to COMPRESSOR PRODUCTS INTERNATIONAL LLC (CPI) (Stafford, Texas).
"Wiper ring for reciprocating compressor rod packing" was invented by Pascal Mahieux (Colleret, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rod packing assembly that includes a wiper ring is disclosed. In one embodiment, a rod packing assembly comprises a first ring, a second ring, a third ring, a first biasing member, a second biasing member, and a third biasing member. The third ring has at least one port, and is positioned between the first ring and the second ring. The first ring, the second ring, and the third ring surround a rod and...