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| Number | Title | Issue Date |
| 8183851 | Detector for calculating a depth of a buried conductor A detector for calculating a depth of a buried conductor is provided. The detector includes first, second and third antennas and a microprocessor. The second antenna has an axis parallel to an axis of the first antenna and is spaced a distance s from the first anten... | 05/22/2012 |
| 8125210 | Detector for calculating the depth of a buried conductor A detector for calculating a depth of a buried conductor is provided. The detector includes a plurality of antennas for detecting an electromagnetic field radiated by the conductor and one or more signal processors for calculating the depth of the conductor based on... | 02/28/2012 |
| 8085032 | Multi-scanner device having a detachable outlet tester A multi-scanner device having a detection unit and an outlet tester that can be selectively connected together for convenient use and easy storage. Preferably, a plug on the outlet tester is inserted into a non-functional socket located on the detection unit to form... | 12/27/2011 |
| 8026711 | Measuring device and method for locating objects enclosed in a medium, using high-frequency electromagnetic signals The invention relates to a measuring device, in particular a hand-held measuring device for locating objects enclosed in a medium, using high-frequency electromagnetic signals. Said device comprises a housing (82) and at least one high-frequency sensor, which... | 09/27/2011 |
| 7994770 | Transmitter of a system for detecting a buried conductor A system for detecting a buried conductor comprises a transmitter for generating a test signal in the buried conductor and a detector for detecting an electromagnetic signal resulting from the test signal flowing in the buried conductor. The transmitter comprises a ... | 08/09/2011 |
| 7982450 | Device and method allowing the detection and display of objects located behind an obscuring surface A handheld device providing an internal view through an obscuring wall or other obscuring surfaces of hidden structural or facilities elements (such as wooden studs, electrical, plumbing, or HVAC), or the absence thereof. A continuous and homogeneous luminescent gas... | 07/19/2011 |
| 7969137 | System for and method of detecting a buried conductor A system for detecting a buried conductor comprises a transmitter for producing an alternating test current in the buried conductor and a receiver for detecting an electromagnetic field produced by the test current in the buried conductor. A communication link is pr... | 06/28/2011 |
| 7928717 | Multi-scanner device having a detachable outlet tester A multi-scanner device having a detection unit and an outlet tester that can be selectively connected together for convenient use and easy storage. Preferably, a plug on the outlet tester is inserted into a non-functional socket located on the detection unit to form... | 04/19/2011 |
| 7888927 | Device for locating sites hidden behind a covering surface The invention provides for a system and method for locating concealed locations such as wiring, plumbing, or void locations with respect to a covering material like a wall. The system comprises a position indicating portion that is concealed on one side of a coverin... | 02/15/2011 |
| 7872464 | Hand held arc fault testing system A testing system includes a hand-held transmitter that plugs into a receptacle electrically coupled to a selected branch circuit. The transmitter includes a circuit effective to test an arc fault circuit interrupter electrically coupled to the branch circuit by crea... | 01/18/2011 |
| 7863885 | Sondes for locating underground pipes and conduits A sonde includes an elongate flexible ferromagnetic core and a coil surrounds an intermediate segment of the core. A housing surrounds and supports the coil. An electronic drive circuit is mounted in the housing for supplying the coil with an electric signal that wi... | 01/04/2011 |
| 7825647 | Method for locating buried pipes and cables A method of locating a buried conductor such as a pipe uses an electronic transmitter to generate a signal having a predetermined frequency with is applied to the pipe via an alligator clip or other appropriate connector. A ground connection to the transmitter is es... | 11/02/2010 |
| 7808226 | Line tracing method and apparatus utilizing non-linear junction detecting locator probe A method, device, and apparatus for tracing a conductive line and locating any concealed surveillance devices coupled to the line uses a signal generator to produce a test signal having a fundamental frequency which is coupled to the line under test. The test signal... | 10/05/2010 |
| 7768250 | Magnetic indexer for high accuracy hole drilling A method for locating a device, which produces a field, with a probe assembly affected by the field. The method may involve: placing a device on a first side of a work piece; producing a field with the device through the work piece; using a robot to hold and to plac... | 08/03/2010 |
| 7768249 | Magnetic indexer for high accuracy hole drilling A magnetic indexer for locating a device producing a magnetic field in a blind or inaccessible position of a work piece. A magnet is initially placed on a first side of the work piece such that a magnetic field produced by the magnet extends through the work piece a... | 08/03/2010 |
| 7764061 | Method for detecting objects enclosed in a medium, and measuring device for carrying out the method In a method for detecting objects enclosed in a medium, a measurement signal correlated with an enclosed object is measured and used to generate a second signal, which reflects the measured signal strength of the measurement signal in a segmented manner by associati... | 07/27/2010 |
| 7733077 | Multi-sensor mapping omnidirectional sonde and line locators and transmitter used therewith Portable locators are disclosed for finding and mapping buried objects such as utilities. A articulatable antenna node configuration and the use of Doppler radar and GPS navigation are also disclosed. ... | 06/08/2010 |
| 7723974 | Planishing apparatus and method Planishing or stress relief in a welded joint (34) is accomplished with a hammer (12) and a backing bar (26). The hammer is applied on a first side (1) to a first surface (31) of the structure (30). To indicate the proper po... | 05/25/2010 |
| 7701191 | Method for the detection of objects enclosed in a medium, and measuring apparatus for carrying out said method The invention relates to a method for detecting objects (12) that are enclosed in a medium (10). According to said method, a test signal (18) that makes it possible to obtain information about the position of the enclosed object (12) is g... | 04/20/2010 |
| 7671577 | Method for locating objects enclosed in a medium, and measuring device for carrying out the method A method for locating objects enclosed in a medium, comprising the steps of generating a measurement signal correlated with an enclosed object; using the generated measurement signal to produce a signal which represents a difference between at least a first state wh... | 03/02/2010 |
| 7633282 | Multi-scanner device having a detachable outlet tester A multi-scanner device having a detection unit and an outlet tester that can be selectively connected together for convenient use and easy storage. Preferably, a plug on the outlet tester is inserted into a non-functional socket located on the detection unit to form... | 12/15/2009 |
| 7583071 | Locating device A locating device, in particular a hand-held locating device, for detecting objects enclosed in a medium, including an output unit for displaying at least one output variable correlated with a measuring signal of at least one sensor of the locating device, the outpu... | 09/01/2009 |
| 7570041 | Magnetic field position sensor and method of use A magnetic field position sensing device for sensing the position, on a front surface of a wall, of a magnet of known magnetic field intensity secured to a rear surface of the wall. The sensing device has a magnetic field transducer which produces signals proportion... | 08/04/2009 |
| 7557559 | Compact line illuminator for locating buried pipes and cables A compact line illuminator for applying an oscillating signal to buried or otherwise inaccessible pipes, cables and conductors so that their location can be traced by detecting an electromagnetic signal emitted by these buried objects. The illuminator includes a cir... | 07/07/2009 |
| 7504817 | Stud sensor A sensing device having a sensing surface for placing against a wall for detecting objects behind a wall lining has first and second sensors, each sensor including at least first and second capacitor plates and associated resistors forming RC circuits having time co... | 03/17/2009 |
| 7498797 | Locator with current-measuring capability A human-portable utility locator system for locating and tracing a buried utility line characterized by an electromagnetic field emission. The locator may include a horizontal spaced sensor pair for detecting the horizontal field asymmetry of the emitted field in on... | 03/03/2009 |
| 7498796 | Magnetic indexer for high accuracy hole drilling A magnetic indexer for locating a device producing a magnetic field in a blind or inaccessible position of a work piece. A magnet is initially placed on a first side of the work piece such that a magnetic field produced by the magnet extends through the work piece a... | 03/03/2009 |
| 7471075 | Multi-test Arc fault circuit interrupter tester A testing system includes a hand-held transmitter that plugs into a receptacle electrically coupled to a selected branch circuit. The transmitter includes a circuit effective to test an arc fault circuit interrupter electrically coupled to the branch circuit by crea... | 12/30/2008 |
| 7453253 | Locating device and corresponding method The present invention relates to a method for graphically displaying a sectional image of an object under examination (1, 18) having objects (2, 17) situated therein, in particular for the display of a sectional image of a building wall. The invention ... | 11/18/2008 |
| 7443154 | Multi-sensor mapping omnidirectional sonde and line locator Portable locators are disclosed for finding and mapping buried objects such as utilities. A articulatable antenna node configuration and the use of Doppler radar and GPS navigation are also disclosed. ... | 10/28/2008 |
| 7423545 | 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... | 09/09/2008 |
| 7403012 | Detector for detecting a buried current carrying conductor using electromagnetic radiation of predetermined frequencies A detector for detecting a buried current carrying conductor includes a digital signal processor, magnetic sensors, and a power supply unit. The power supply unit is a switched mode power supply which incorporates a proportional integral differential controller feed... | 07/22/2008 |
| 7397249 | Apparatus for distinguishing false signals in cable locating Discriminating between a cable locating signal and a false cable locating signal is described. A reference signal, which contains a locating signal frequency impressed on it, is transmitted in a way which provides for detection of a phase shift between the locating ... | 07/08/2008 |
| 7391216 | Locating arrangement and method using boring tool and cable locating signals An arrangement and an associated method are described in which a boring tool is moved through the ground within a given region along a path in which region a cable is buried. The boring tool and the cable transmit a boring tool locating signal and a cable locating s... | 06/24/2008 |
| 7385390 | Device for establishing a cutting point from a blind side of a structure A blind spot targeting system for establishing a cutting point includes a locator with a housing having an indicator and a signal-sensing device. The housing has a hole therethrough, and the indicator is in electronic communication with the signal-sensing device for... | 06/10/2008 |
| 7382266 | Surface tracker A surface tracker includes a tubular marker body having an interior electronic marker and a visual indicator attached to an upper end of the marker body which extends away from the marker body. When deployed, the marker body is mostly underground and the visual indi... | 06/03/2008 |
| 7373271 | System and method for measuring position and orientation using distortion-compensated magnetic fields An electromagnetic tracking system (600) and a distortion compensation method (500) that utilize a lead-lag network model to compensate for position and orientation distortion caused by eddy currents formed in one or more conductive distorters (330,... | 05/13/2008 |
| 7372247 | Apparatus and method for locating and marking an underground utility An apparatus and method to locate and mark the surface position of an underground utility while maneuvering along the path of the utility. The apparatus uses an underground utility detector that responds to the location of an underground utility to continually posit... | 05/13/2008 |
| 7367131 | System for locating a junction box A system for locating a junction box installed within the framework of a structure and behind a wall includes a first magnet mounted on a plate with the plate being removably mounted to a junction box, a spring actively biasing the magnet outwardly from the plate, a... | 05/06/2008 |
| 7364092 | Electronic stripe cards An electronic stripe card senses when it is being swiped passed a read head, and drives a conductive path to mimic a magnetic card track. Multiple conductive paths may be driven in an interleaved fashion one after another. The card may include multiple swipe sensors... | 04/29/2008 |
