Patent ID: 8784082

Claim:
A locking device for a packing assembly, the device comprising: a holding end and a locking end, wherein the holding end is configured to mechanically and/or frictionally engage a fixed component of a packing assembly and the locking end is configured to mechanically and/or frictionally engage at least a portion of a packing nut so as to prevent the packing nut from rotating or otherwise changing its position, wherein the holding end comprises a hook shape that defines an inner space and a tip opening, wherein the inner space has a diameter that is larger than a clearance of the tip opening and is configured to achieve a snug fit with the fixed component, and wherein the tip opening narrows inwardly from both a first side and a second side of the inner space at the clearance, the tip opening being configured to prevent the locking device from being detached from the fixed component via the tip opening.