Resources Contact Us Home
Dipole field locate point determination using a horizontal flux vector

Image Number 2 for United States Patent #6653837.

A system includes a boring tool that is moved through the ground while transmitting a dipole locating signal such that the locating signal exhibits a pair of locate points at the surface of the ground. A local flux intensity of the locating signal is measured for at least one above ground point using a portable locator. A horizontal flux vector is established at that point, which is generally oriented in a horizontal plane, by using the measured local flux intensity to determine components of the locating signal in the horizontal plane that define the horizontal flux vector. The locator is moved in a direction generally defined by the orientation of the horizontal flux vector as at least an intermediate step in establishing the position of the nearest locate point. After moving, the procedure may be repeated to progressively converge on the nearest locate point.

  Recently Added Patents
Method and apparatus for controlling cardiac resynchronization therapy using cardiac impedance
Systems and methods for redox flow battery scalable modular reactant storage
Using storage cells to perform computation
Computing device with improved user interface for applications
Semiconductor device having a bonding pad and shield structure of different thickness
Apparatus for controllable delay cell and associated methods
  Randomly Featured Patents
Method for conditioning to prevent motion sickness
Method for diagnosing the life of a solder connection
Manufacturing apparatus for wiring harnesses and a manufacturing method for wiring harnesses
Device, system and method of delay calibration
Blanketing atmosphere for molten aluminum-lithium alloys or pure lithium
Imaging device including an optical member having a water-repellent or water/oil-repellent coating, an antireflection coating, an infrared-cutting glass, and a lowpass filter in this order fro
Antenna device
Microtome having concentric operating elements for controlling a motor unit
Composite low surface energy liner of perfluoropolyether
Method and apparatus for simultaneously retrieving portions of a data stream from different channels