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US 6,086,050 AGranted
Apparatus for pulling a traction cable through an underground pipe
AssigneePlumettaz SA
InventorsWalter Wiederkehr, Gerard Plumettaz
Life of this patent
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Abstract
A pulling apparatus includes a frame having a securing stirrup for securing a beam. The beam is provided at one end with a return pulley. Due to the structure of the securing stirrup, the tractive forces are transferred completely to the beam and the frame so that the means for securing the apparatus to the ground can be minimized. Such a design easily allows the beam to be set at an angle when the pipe is off center. The apparatus may also be easily placed in a cable chamber for operation.
Claims13
An apparatus for pulling a cable, said apparatus comprising:
- a frame;
- a cable pulling device supported by the frame;
- a beam that absorbs tractive stress of the cable,
- a securing device that secures the beam relative to the frame, the securing device forming an integral part of said frame:
- and
- a level adjuster that adjusts a level of said frame, said level adjuster being usable to set an angle of the beam different from the vertical.
3 more elements
Dependencies are inferred from the claim text.