Patent ID: 7308933

Claim:
In a lubricator assembly for receiving a well plunger from a well tubular, said lubricator assembly including a lower portion, an upper riser removably attachable to said lower portion for removing said well plunger from said lubricator assembly, and a hinge assembly, said hinge assembly including a first portion of said hinge assembly connected to said lower portion of said lubricator assembly, a second portion of said hinge assembly connected to said upper riser, and at least one hinge pin or rod connecting said second portion of said hinge assembly to said first portion of said hinge assembly for hingedly moving said upper riser onto and off of said lower portion of said lubricator assembly, comprising a power lifting device connected between (a) said first portion of said hinge assembly connected to said lower portion of said lubricator assembly and (b) said second portion of said hinge assembly connected to said upper riser.