Slip style rod spinner for pipe bursting machine
AssigneeEarth Tool Company, L.L.C.
InventorsSteven W. Wentworth, Robert F. Crane, Walter George Thompson
Life of this patent
Estimating the term…
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AssigneeEarth Tool Company, L.L.C.
InventorsSteven W. Wentworth, Robert F. Crane, Walter George Thompson
Estimating the term…
A system for pushing and pulling rod strings through the ground or an underground pipe. The apparatus has a downhole tool attached to the distal end of the rod string. The push/pull machine has a stationary frame that is placed against the ground to provide a reaction surface. The stationary frame has an opening for the rod string to pass through. A rod gripping assembly is supported on the machine frame and moveable relative to the stationary frame. The push/pull machine has a powered rod section spinner to add or remove rod string sections from the rod string. An actuator powers movement of jaws into a spinner bowl to cause a powered gripping of the rod string section. With the rod string section gripped a motor is activated to rotate the rod string section to connect it to a rod string or disconnect it from the rod string.
An apparatus for connecting and disconnecting a rod string section from a rod string, comprising:
A rod spinner for adding and removing a rod string section from a rod string used in pipe-bursting operations, the rod spinner having an opening and a longitudinal axis disposed therethrough, and comprising:
Dependencies are inferred from the claim text.