ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,855, issued on Nov. 3.
"Plunger pump packing assembly" was invented by Daniel K. Zitting (St. George, Utah).
According to the abstract* released by the U.S. Patent & Trademark Office: "A plunger pump packing assembly includes a header ring, and one or more seals. The plunger pump packing assembly operates as a seal between a static component and a dynamic component (e.g., reciprocating plunger). The header ring has a vented inside portion to prevent trapping pressure on the outer diameter of the header ring or between the header ring and adjacent seals or packing rings. The vents allow trapped pressure to return when the pumped fluid pressure is lower. A radially protruding edge o...