Patent ID: 10907454

Abstract:
A liner assembly is used for a polished rod of a reciprocating pump movable through a stuffing box. A liner sleeve positions on the polished rod and has an external thread on its distal ends. Roots of the external thread increase in depth in the external circumferential surface along the length toward the distal end. A nut positions on the polished rod and has internal thread configured to thread to the external thread of the liner sleeve. A head positions on the polished rod. The head is configured to engage the polished (e.g., with clamping or fastening), and the head is configured to affix to the nut (e.g., with thread or with flanges and fasteners). A gasket positions on the polished rod between the nut and the head. The gasket is held between a nose of the nut and a smooth bore relief of the head or is held between reliefs on the nut and head.