Patent ID: 6912764
Filing Date: 2005-07-05
Classification: B23P,B25B,F04C,Y10T

Abstract:
1. A pump apparatus comprising: a progressing cavity pump including a stator tube and a rotor, the rotor being rotatable relative to the stator tube to pump material through the stator tube; and a stator tube removal apparatus for removing the stator tube from a position about the rotor, the removal apparatus comprising: an actuator assembly including a base and a piston which is displaceable relative to said base along a first axis, said base being removably attachable to a discharge end of said stator tube; and a pusher rod located adjacent to said piston and being releasably attachable to said piston along said first axis at a plurality of locations along said pusher rod, said pusher rod being located to engage said rotor when said base is coupled to said stator tube, said pusher rod is coupled to said piston and said piston is driven by said actuator assembly.