Patent ID: 11933173
Assignee: THE CHARLES MACHINE WORKS, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A method of using a system, the system comprising:
an underground borehole having an entry point and an exit point;
a horizontal directional drill situated at the entry point;
a product pipe situated at the exit point;
a drill string positioned within the borehole and interconnecting the horizontal directional drill and the product pipe;
a first sensor; and
a second sensor;
the method comprising:
using the horizontal directional drill to pull the drill string out of the borehole while simultaneously pulling the product pipe into the borehole;
using the first sensor to measure a previously determined parameter concerning the product pipe as the product pipe is pulled into the borehole;
using the second sensor to measure a previously determined parameter concerning the drill string as the drill string is pulled out of the borehole; and
comparing data collected by the first sensor to data collected by the second sensor to determine if the difference between the collected data is within an acceptable value range.