Implements or apparatus for applying pushing or pulling force – Pipe or rod jack – Tie rod tensioner
Patent
1984-08-27
1985-03-05
Schmidt, Frederick R.
Implements or apparatus for applying pushing or pulling force
Pipe or rod jack
Tie rod tensioner
E21B 1900
Patent
active
045026653
ABSTRACT:
Apparatus for pushing or pulling a cylindrical object includes a frame, a carriage slidably mounted on the frame, and a hydraulic actuator. An intermediately-pivoted lever is mounted on the carriage. The lower end of this lever is connected to the actuator. A roller member is mounted on the upper end of the lever for movement toward and away from a jaw member on the carriage. A stop member may be selectively located on the carriage to limit angular movement of the lever, thereby to allow relative movement between the jaw and the object in one direction but not in the other.
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Schad Steven P.
Schmidt Frederick R.
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