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Match Document Document Title
9018935 Method for operating a metal detection apparatus and apparatus  
A method for operating a metal detection apparatus that comprises a transmitter unit with a drive circuit that alternately applies two different drive voltages via a first set of two drive...
9013274 Magnetomechanical markers for marking stationary assets  
An article, system and method related to a magnetomechanical marker used to mark stationary assets. Magnetomechanical markers can be arranged in clusters and associated with stationary assets,...
8952677 Locator for locating a current carrying conductor  
A locator for locating a concealed conductor carrying an alternating current having at least first and second frequencies, the alternating current produced by at least one dedicated signal...
8884633 Obscured feature detector with pattern matching  
A surface-conforming obscured feature detector includes a plurality of sensor plates, each having a capacitance that varies based on the dielectric constant of the materials that compose the...
8878515 Constant current metal detector  
A constant current is provided to an energizing coil in a magnetic detector by charging a capacitor through a resistor from a high voltage source. Discharging of the capacitor into the energizing...
8878537 Method and apparatus to minimize gradient errors in buried utility depth measurements  
A buried utility locator uses the “gradient method” to determine the depth of a buried, current-carrying utility. The method and corresponding apparatus used in said locator, to minimize field...
8836347 Obscured feature detector with width indication  
A surface-conforming obscured feature detector includes a plurality of sensor plates, each having a capacitance that varies based on the dielectric constant of the materials that compose the...
8791708 Obscured feature detector with advanced trace properties  
A surface-conforming obscured feature detector includes a plurality of sensor plates, each having a capacitance that varies based on the dielectric constant of the materials that compose the...
8791701 Electromagnetic proximity detection method and unit  
Electromagnetic proximity detection method for a buried structure executed with a mobile detection device, including sensing an electromagnetic field emitted from the structure as an analog...
8760145 Electronic device for detecting an object beneath a wall section of interest having a persistent image display  
An electronic device for detecting an object beneath a wall section of interest has an elongate rectangular base for temporarily mounting to the wall section of interest and for carrying a display...
8742747 Detector for detecting a current carrying conductor  
A locator for determining the location and/or orientation of a concealed conductor, comprising a reference field detector operable to detect an alternating magnetic field along a reference axis; a...
8736248 Detection circuit and a method for detecting a wrong supply voltage  
The present invention relates to a detection circuit for detecting that a power supply unit is connected to a wrong supply voltage. Said detection circuit comprises a first voltage divider (24,...
8736283 Advanced obscured feature detector  
A surface-conforming obscured feature detector includes a plurality of sensor plates, each having a capacitance that varies based on the dielectric constant of the materials that compose the...
8729891 Self-calibrating magnetic field monitor  
A self-calibrating magnetic field monitor is disclosed. In one embodiment, a magnetic field sensor repeatedly generates an electronic signal related to the magnetic field. In addition, a...
8698501 Method for distinguishing a locating signal from a false locating signal  
A method is described for use in a region which contains at least first and second in-ground cables, each of which cables includes an electrically conductive component such that, when the first...
8680864 Flux plane locating in an underground drilling system  
A portable locator and method for establishing the location of the cable line in a region which includes at least one generally straight electrically conductive cable line extending across the...
8674700 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...
8674678 Device, system and method for locating a pipe  
A device, system and method of locating a target pipe in a pipe system utilizes an electric signal transmitter and an electrical signal detector. A pipe locator signal conductor comprises a spool...
8676522 Detector for detecting a current carrying conductor  
A locator for locating a concealed conductor comprises a first field detector operable to detect an alternating magnetic field along a first axis parallel to a primary axis of the locator; a...
8669772 Obscured feature detector housing  
A surface-conforming obscured feature detector includes a plurality of sensor plates, each having a capacitance that varies based on the dielectric constant of the materials that compose the...
8659298 Advanced steering tool system, method and apparatus  
A steering tool is movable by a drill string to form an underground bore along an intended path. A sensing arrangement of the steering tool detects its pitch and yaw orientations at a series of...
8638085 Apparatus and methods for mapping a wired network  
The present disclosure relates to a system and method for determining the electrical connections of a plurality of nodes. The nodes may include an electrical power distribution system including a...
8638086 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...
8624577 Identifying a cable path using light emitting diodes  
In one embodiment, a system for identifying a cable path may be provided. The system may include a cable set operable to transmit data, the cable set comprising power delivery wires designed to...
8618811 ARC fault circuit interrupter tester with current responsive pulse timing  
An arc fault circuit interrupter test circuit is disclosed. The test circuit incorporates a controller along with at least one power transistor, a current sense circuit and a voltage sense...
8612148 Marking apparatus configured to detect out-of-tolerance conditions in connection with underground facility marking operations, and associated methods and systems  
Methods, apparatus, and systems for facilitating a marking operation to indicate a presence or an absence of at least one underground facility. Marking information, including one or both of...
8604771 Hand tool having a pivot grip for sensing a measurement behind a target surface  
An implementation of a system and method for a hand tool having a pivot grip is provided. The pivot grip provides an axis of rotation perpendicular and centered with a pair of concave finger holds...
8599029 Electrical circuit identification means  
An electrical circuit identification means is revealed. The electrical circuit identification device includes a signal generator connected directly to an AC power socket and a signal receiver set...
8593163 Surface-conforming obscured feature detector  
A surface-conforming obscured feature detector includes a plurality of sensor plates flexibly connected together, each having a capacitance that varies based on the dielectric constant of the...
8581724 Dynamic information projection for a wall sensor  
An implementation of a system, device and method for projecting a visual indicator against a surface is provided. A display projection system in a handheld sensor device (e.g. a handheld wall...
8570024 Non-contact phase identification method and apparatus  
A phase identification system identifies the unknown phase attribute of any energized conductor within a three-phase power distribution network by comparing remote location non-contact phase...
8566043 Detector for calculating the distortion of an electromagnetic field produced by a buried current carrying conductor  
A detector for calculating the distortion of an electromagnetic field produced by a buried current carrying conductor comprises three antennas B, M, T. Outputs of two pairs of antennas are...
8560263 Power distribution network estimation device  
A device that estimates a positional relationship between loads individually connected through sensors to electric power-supply ends provided in a power distribution network includes a...
8555482 Process of assembling a probe  
A process of assembling a probe that includes providing a circuit board that is connectable to a sensor and is connected to a first electrical connector and sliding a housing that has a first end...
8552709 Systems and methods for locating a circuit  
Systems and methods presented herein locate and/or identify a circuit within an electrical system. In one embodiment, a transmitter is configured for inducing signals upon a plurality of circuit...
8549084 Methods, apparatus, and systems for exchanging information between excavators and other entities associated with underground facility locate and marking operations  
Methods, apparatus, and systems for providing information regarding a locate and/or marking operation to identify a presence or an absence of at least one underground facility within a dig area....
8517642 Tool mounted stud finder  
A tool adapter is disclosed configured to locate a stud such as that in a wall of a structure. The adapter comprises a mounting portion configured to releasably attach externally to a tool, and a...
8515689 Enhanced precise location  
A method for determining the location of underground cables and pipes is disclosed. In some embodiments, the method includes measuring a set of electromagnetic field magnitudes and phases at a...
8515690 Enhanced precise location  
A line locator includes a signal detector to detect signals from an underground line; an error modeler that models a phase error in the signal from neighboring underground lines; and an enhanced...
8504604 Multimeter with filtered measurement mode  
A multimeter with filtered measurement mode is disclosed. The multimeter includes a signal conditioning circuit, a low-pass filter, a microprocessor, a measurement circuit, a root-mean-square...
8484300 Methods, apparatus and systems for communicating information relating to the performance of underground facility locate and marking operations to excavators and other entities  
Methods, apparatus, and systems for providing information regarding a locate and/or marking operation to identify a presence or an absence of at least one underground facility within a dig area....
8442766 Marking apparatus having enhanced features for underground facility marking operations, and associated methods and systems  
Marking information relating to use of a marking device to perform a marking operation may be acquired from one or more input devices, logged/stored in local memory of a marking device, formatted...
8436741 Locating device  
The invention is based on a locating device for locating objects in an item being investigated, said device having a basic body, a sensor unit for detecting a movement parameter when the basic...
8427173 Open fuse detection by neutral point shift  
Systems and methods are shown for detecting a blown fuse in a three-phase line by comparing neutral points in the line before and after the fuses. Diode rectifier circuits may be used to compare...
8400156 Installation of service tee marker fixture having disk marker and concentric attachment sleeve  
A service tee marker fixture comprises a disk marker and a cylindrical attachment sleeve fastened concentrically to the disk marker and constructed of a flexible material which provides a...
8363210 Three dimensional feature location from an excavator  
A combination of location measurement apparatuses to measure in three dimensions the location of an excavator with respect to a job site, and to further measure the location of an excavated or a...
8358120 Non-intrusive detection of live electrical lines  
A method for determining a presence of live 3-phase electrical lines inside a buried pipe or conduit from outside the pipe or conduit and preferably from an above ground location. A sensor...
8339275 AC voltage phase discriminator for circuit breaker locators  
An arrangement that includes a transmitter unit and a receiver for locating a circuit interrupter associated with a selected branch circuit of a power distribution system. The transmitter is...
8339272 Circuit breaker locator  
An arrangement that includes a transmitter unit and a receiver for locating a wire or a circuit interrupter associated with a selected branch circuit of a power distribution system. The...
8310236 Continuous wave metal detector  
A training set including a target object set and a clutter object set is accessed. It is determined that the training set includes multiple types of targets or multiple types of clutter. The...

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