Back to results
US 10,167,986 B2Granted
Cable puller and method
AssigneeTT Technologies, Inc.
InventorMichael Tjader
Life of this patent
Estimating the term…
Abstract
A cable puller and associated methods are shown. Useful example methods include pipe bursting using cable pullers as shown. Cable pullers and methods shown provide a mechanical advantage that increases an amount of cable pulled in one cycle. Selected examples are shown that include a pulley located on a distal end of a moving portion of an extending and contracting beam. The pulley and the mechanical advantage it supplies helps to improve the efficiency of the cable puller and reduce manufacturing cost of the cable puller.
Claims16
A cable puller, comprising:
- an extending and contracting beam, including a stationary portion and a moving portion;
- a soil reaction plate coupled to the stationary portion;
- a pulley attached at a distal end of the moving portion;
- one cyclic cable gripping device on the cable puller, the one cyclic cable gripping device attached to the stationary portion, the one cyclic cable gripping device configured to pull a cable through a length of pipe by gripping the cable on a beam extension,
- a splitter attached to the stationary portion before the cable gripper, wherein the splitter includes a replaceable, stationary blade that is held in place with one or more spring loaded balls that correspond to a detent.
2 more elements
A method of pipe replacement, comprising:
- placing a cable through a pipe to be replaced having a bursting head attached to a distal end of the cable;
- routing the cable around a pulley attached at a distal, moving end of an extending and contracting beam;
- gripping the cable on a stationary portion of the extending and contracting beam;
- extending the moving end of the extending and contracting beam and using the mechanical advantage of the pulley to double an amount of cable pulled in an extension of the extending and contracting beam;
- and
- pulling the bursting head through the pipe to be replaced by pulling the cable toward the extending and contracting beam.
3 more elements
Dependencies are inferred from the claim text.