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| Number | Title | Issue Date |
| 8144058 | System and method for collecting and updating geographical data A system and method for generating a geographical data transaction including information about a topography of a region and utilities within the region. The method and system include providing information about the topography of the region; receiving information fro... | 03/27/2012 |
| 8081112 | System and method for collecting information related to utility assets A method and apparatus, including software, for the development and operational use of precise utility location and utility asset management information. Field-usable data sets may be produced that meet standards of accuracy and usability that are sufficient for use... | 12/20/2011 |
| 7360124 | Autonomous network fault detection and management system The invention provides an autonomous geo-referenced fault data detection, storage and management system and method for transmission line network such as cable distribution networks, based on an application server architecture, wherein autonomous means automatic and ... | 04/15/2008 |
| 7350594 | System and method for tracking and communicating with a boring tool A system for determining the location of and communicating with a downhole tool assembly. A tracker assembly comprises a vertical transmitting antenna, a plurality of receiving antennas, and a processor. The downhole tool assembly has a beacon assembly comprising a ... | 04/01/2008 |
| 7342537 | Method of and apparatus for detecting a current carrying conductor A detector 1 for detecting a current carrying conductor determines the presence of a current carrying conductor one or more of passive or active modes. In the passive modes, the detector 1 detects either very low frequency radio signals re-radiated fro... | 03/11/2008 |
| 7319387 | GPS interface for locating device A system for locating a position marker includes a locating device for locating the position marker, and a GPS device communicatively coupled to the locating device that provides GPS coordinate data when the position marker is located by the locating device. Electro... | 01/15/2008 |
| 7301453 | Locator system and method A locator system includes two main components, namely, (1) a beacon tag that is readily attached to a person or article, and (2) a transportable finder or receiver/processor for sensing the relative position of the tag and indicating changes in that relative positio... | 11/27/2007 |
| 7260407 | Radio location system measurement unit A location measurement unit 401 for a radio location measuring system has two or more coupling devices 404,405 for picking up the signals from a plurality of base transceiver stations (BTSs) of a cellular radio communication system. A switching device ... | 08/21/2007 |
| 7150331 | System and method for tracking and communicating with a boring tool A system for determining the location of and communicating with a downhole tool assembly. A tracker assembly comprises a vertical transmitting antenna, a plurality of receiving antennas, and a processor. The downhole tool assembly has a beacon assembly comprising a ... | 12/19/2006 |
| 7075745 | Disk drive In a disk drive apparatus for forcibly restoring a head to a retract position when a power voltage is greatly lowered, the head is moved in a direction toward the retract position when detecting a small decrease in the power voltage. ... | 07/11/2006 |
| 7013990 | Apparatus and method for simultaneously locating a fixed object and tracking a beacon A portable area monitoring system for use with a horizontal directional drilling machine and adapted to produce a composite of the positions of a beacon and a fixed object. In a preferred embodiment the sensor assembly is supported by a hand-held frame and adapted t... | 03/21/2006 |
| 6999021 | Method and apparatus for detecting, mapping and locating underground utilities The method and device for locating underground utilities within an area includes traversing the area with a plurality of underground utility sensors and obtaining area location data to locate the area traversed. The sensor data and area location data are used to map... | 02/14/2006 |
| 6998994 | Failed filter arrest indicator and method for use in multiple arrester location The present invention is a technique for locating and identifying a failed filter/arrester in an underground conveyance such as a fiber optic cable. A sensor is installed in the filter/arrester housing to sense grounding of a cable locating frequency. The sensor wil... | 02/14/2006 |
| 6979992 | Portable radiated emissions measurement system Methods and systems are disclosed for analyzing interference caused by electromagnetic and other radiated emissions. A system includes an antenna, a spectrum analyzer, a computer and associated software. Configurations are defined for frequency ranges and tests are ... | 12/27/2005 |
| 6978476 | Device and method of determining location of signal ingress The present invention comprises a device which may be attached to a cable ground block (62) such that the level and type for signal emitted through the upstream flow of the signal, from a residence or business (59), may be determined along with the loc... | 12/20/2005 |
| 6935439 | Boring tool control using remote locator A drilling system performs underground boring using a drill rig and a boring tool which is configured for moving through the ground under control of the drill rig to form an underground bore. A monitoring arrangement, forming part of the system, includes a detection... | 08/30/2005 |
| 6937190 | Electromagnetic impulse survey apparatus and method A passive geophysical prospecting method and apparatus are provided. The apparatus has an antenna for detecting electromagnetic radiation naturally emanating from the Earth's surface and generating an electrical signal from the detected electromagnetic radiation whi... | 08/30/2005 |
| 6668944 | Path mapping in underground boring tool applications Specific methods are described for use in tracking and/or guiding the movement of an underground boring tool. In one aspect, an improvement is provided forming part of an arrangement for tracking the position and/or guiding the boring tool using an electr... | 12/30/2003 |
| 6650293 | Technique for providing conveyance locating information To locate a buried conveyance (10), electromagnetic signaling information is collected at spaced intervals along the conveyance with the aid of a locating device (14). A processor (21) receives such information from the locating device (14) and then geogr... | 11/18/2003 |
| 6587079 | Object location A system for locating an object that produces identifying signals comprises a plurality of receiver sites arranged in an array for receiving signals from the object and for receiving a common time reference in the form signals received from a global navig... | 07/01/2003 |
| 6549012 | Radio system for characterizing and outlining underground industrial developments and facilities Most mines and underground facilities employ standardized construction techniques and materials. Such also cannot avoid having some above ground openings to receive utilities, fresh air, supplies, etc. Those or other surface openings are also universally ... | 04/15/2003 |
| 6538616 | Cubic antenna The present invention is an antenna with a cubic core. A first conductor is wound around the core's first axis. A first dielectric layer is placed around the first conductor. A first electrical shield is placed around the first dielectric layer. A second ... | 03/25/2003 |
| 6536538 | Establishing positions of locating field detectors and path mapping in underground boring tool applications Specific apparatus and associated methods are described for use in establishing the positions of locating field detectors and for path mapping within a region for the purpose of tracking and/or guiding the movement of an underground boring tool. In one as... | 03/25/2003 |
| 6457537 | Mapping tool for tracking and/or guiding an underground boring tool A portable mapping tool for use in a horizontal drilling system and associated methods use a boring tool configured for transmitting a locating signal. The mapping tool also includes at least one electromagnetic field detector which is configured for meas... | 10/01/2002 |
| 6454023 | Mapping tool for tracking and/or guiding an underground boring tool Systems and associated methods for tracking and/or guiding an underground boring tool use one or more detectors to measure the intensity of an electromagnetic field which is transmitted from an underground boring tool. The measured intensities may then be... | 09/24/2002 |
| 6377872 | Apparatus and method for microwave imaging and excavation of objects A microwave imaging excavator for the detection, imaging and excavation of objects on or buried beneath the surface of the ground, such as metallic and dielectric land mines. A continuous wave stepped frequency ground penetrating radar signal is transmitt... | 04/23/2002 |
| 6364035 | Establishing positions of locating field detectors and path mapping in underground boring tool applications Specific apparatus and associated methods are described for use in establishing the positions of locating field detectors and for path mapping within a region for the purpose of tracking and/or guiding the movement of an underground boring tool. In one as... | 04/02/2002 |
| 6285190 | Skin depth compensation in underground boring applications Arrangements, specific apparatus and associated methods for skin depth compensation in underground boring applications are described. Compensation for skin depth error is accomplished by measuring a locating signal transmitted from a boring tool such that... | 09/04/2001 |
| 6147480 | Detection of metal disturbance A method for tracking an object using energy fields, in the presence of interference due to introduction of an article responsive to the fields, in the vicinity of the object. One or more desired energy fields are produced in the vicinity of the object, a... | 11/14/2000 |
| 6133869 | Passive technique for the remote detection of buried objects A technique is provided for passively detecting the presence and location of an underground object. A plurality of individual antennas positioned in a linear array are directed to receive fields of view which are mutually parallel in azimuth. The linear a... | 10/17/2000 |
| 6097189 | Object locating system A portable system is provided that is operational for determining, with three dimensional resolution, the position of a buried object or a proximately positioned object that may move in space or air or gas. The system has a plurality of receivers for dete... | 08/01/2000 |
| 6095260 | System, arrangements and associated methods for tracking and/or guiding an underground boring tool Systems and associated methods for tracking and/or guiding an underground boring tool are disclosed. Each system or arrangement uses one or more detectors to measure the intensity of an electromagnetic field which is transmitted from an underground boring... | 08/01/2000 |
| 6084412 | Imaging objects in a dissipative medium by nearfield electromagnetic holography A unique time-domain electromagnetic system and data processing technique which, using low frequency electromagnetic fields, can localize, in three-dimensions, the position of buried metallic objects is disclosed. The measurement system uses time-domain e... | 07/04/2000 |
| 6075481 | Spatial position mapping technique The exact position of a work location (24) is mapped by the aid of at least three differential Global Positioning Satellite (GPS) receivers (12, 14, and 16) situated proximate the work location. Each of the differential Global Positioning Satellite (GPS) ... | 06/13/2000 |
| 6047783 | Systems, arrangements and associated methods for tracking and/or guiding an underground boring tool Systems and associated methods for tracking and/or guiding an underground boring tool are disclosed. Each system or arrangement uses one or more detectors to measure the intensity of an electromagnetic field which is transmitted from an underground boring... | 04/11/2000 |
| 6035951 | System for tracking and/or guiding an underground boring tool Systems and associated methods for tracking and/or guiding an underground boring tool are disclosed. Each system or arrangement uses one or more detectors to measure the intensity of an electromagnetic field which is transmitted from an underground boring... | 03/14/2000 |
| 6023986 | Magnetic flux leakage inspection tool for pipelines The present invention includes a pipeline feature or defect location system including an in-line inspection tool, an inertial navigation system (INS), control points for use with a global positioning system (GPS) and an INS, and a computer programmed with... | 02/15/2000 |
| 6005518 | Coaxial cable RF leakage detector A cable leakage detection system to be placed in a moving vehicle for monitoring signals leaking from a coaxial cable network. AM and FM RF detectors are combined with a global positioning system, a microprocessor, a storage device, a display device, and ... | 12/21/1999 |
| 5895436 | Vehicle tracking system using cellular network A vehicle tracking method and system using the cellular network infrastructure is disclosed. A cellular transceiver which is installed in a vehicle that requires tracking, operates on a continuous standby mode to remain constantly accessible to the cellul... | 04/20/1999 |
| 5838279 | Navigation and tracking system for shielded spaces A navigation and/or tracking system has a base station B and a roving receiver R both of which are capable of receiving signals from a plurality of transmission sources T×1,T×2. A link signal W,W' is passed between the base station and the roving receiv... | 11/17/1998 |
