A puller is provided with a number of advantages. Pullers are described that have a high power to weight ratio, and a high power to volume ratio. Examples of pullers and pulling systems include configurations that provide high cable friction in a small device volume. Examples of pullers and pulling systems also include constant force pulling which is desirable in particular for small diameter pipe replacement. Using pullers and pulling systems as described, minimally invasive pipe replacement operations are possible. Reversible pullers are also provided that decrease the amount of time needed to burst or split multiple segments of pipe.
Pulling device and method therefor
2018-01-23
Patent
Electronic Resource
English
Steel column pulling auxiliary device and pulling method
European Patent Office | 2022
|ELEVATOR COMPENSATION ROPE PULLING DEVICE AND ELEVATOR COMPENSATION ROPE PULLING METHOD
European Patent Office | 2023
|