Abstract: The invention relates to a method for producing a tread (20), comprising the steps: extruding the tread (20), which has an outer side (22) and an inner side (24), opposite the outer side (22), and a carrying region (26) made of a carrying region rubber material and a guide strip (28) made of a guide strip rubber material, wherein the guide strip (28) extends from the outside (22) to the inside (24) and a specific electrical guide strip resistance (W28) of the guide strip rubber material is smaller than a specific electrical carrying region resistance of the carrying region rubber material. The steps according to the invention are: determining an electrical guide strip resistance (W28) of the guide strip (28) between the outer side (22) and the inner side (24) and outputting a warning signal when the electrical resistance (W) exceeds a specified maximum resistance (W28,max).

Abstract: A leak detection system includes a testing interface, which includes a rotation holder configured to retain and rotate a package. The testing interface includes a plunger apparatus configured to actuate a plunger to apply a pressure to the package before and/or during the package being inspected using a high voltage leak detection (HVLD) apparatus. The testing interface also includes a controller configured to operate and coordinate the operation of the testing interface with operation of the HVLD apparatus.

Abstract: A signal processor is configured to receive signaling containing information about a sensed sinusoidal waveform of magnetic flux caused by a current flowing in a winding of a motor having a component of distortion caused at least in part by a magnetic flux created by the current flowing, and also about a pure sinusoidal waveform of a sensed fundamental frequency of the magnetic flux; and determine corresponding signaling containing information about anomalies in the motor that depends on a relationship between the sensed sinusoidal waveform and the pure sinusoid waveform, based upon the signaling received. The signaling may be sensed and provided by a motor magnetic flux sensor attached externally to the motor frame.

Abstract: Systems and methods for fault detection and diagnosis in a machine. The method includes selecting fault characteristic frequencies of faults, implementing the fault characteristic frequencies as modulating signals, receiving a feedback signal from at least one sensor associated with a machine, applying active modulation using the modulating signals to the feedback signal to obtain modulated signals, and monitoring for a low-frequency fault indicative component from the modulated signals.

Abstract: A method and device for determining the existence of a leak in a package includes generating an AC high voltage with a DC high voltage offset in a circuit. A package is placed between an inspection electrode and a detection electrode, which are located within the circuit. The inspection electrode applies the AC high voltage with the DC high voltage offset to the package. Current flow through the package is then detected by the detection electrode. A detection board then processes the current flow and sends the processed signal to a programmable logic controller which determines if a leak is present in the package. If a leak is present, a signal is sent to a display to notify a user.

Abstract: A method and apparatus may include receiving a signal from a motor. The signal is received while the motor is operating. The method also includes performing a pre-processing of the signal. The method also includes inputting the signal to a 1D convolutional neural network. The method also includes detecting a fault of the motor based on the output of the neural network.

Abstract: The system generally includes a crosspoint switch in the local data collection system having multiple inputs and multiple outputs including a first input connected to the first sensor and a second input connected to the second sensor. The multiple outputs include a first and second output configured to be switchable between a condition in which the first output is configured to switch between delivery of the first sensor signal and the second sensor signal and a condition in which there is simultaneous delivery of the first sensor signal from the first output and the second sensor signal from the second output. Each of multiple inputs is configured to be individually assigned to any of the multiple outputs. Unassigned outputs are configured to be switched off producing a high-impedance state. The local data collection system is configured to manage data collection bands. The local data collection system includes a neural net expert system using intelligent management of the data collection bands.

Abstract: The system generally includes a crosspoint switch in the local data collection system having multiple inputs and multiple outputs including a first input connected to the first sensor and a second input connected to the second sensor. The multiple outputs include a first output and a second output configured to be switchable between a condition in which the first output is configured to switch between delivery of the first sensor signal and the second sensor signal and a condition in which there is simultaneous delivery of the first sensor signal from the first output and the second sensor signal from the second output. Each of multiple inputs is configured to be individually assigned to any of the multiple outputs. Unassigned outputs are configured to be switched off producing a high-impedance state. The local data collection system includes multiple multiplexing units and multiple data acquisition units receiving multiple data streams from multiple machines in the industrial environment.

Abstract: The system generally includes a crosspoint switch in the local data collection system having multiple inputs and multiple outputs including a first input connected to the first sensor and a second input connected to the second sensor. The multiple outputs include a first output and a second output configured to be switchable between a condition in which the first output is configured to switch between delivery of the first sensor signal and the second sensor signal and a condition in which there is simultaneous delivery of the first sensor signal from the first output and the second sensor signal from the second output. Each of multiple inputs is configured to be individually assigned to any of the multiple outputs. Unassigned outputs are configured to be switched off producing a high-impedance state.

Abstract: The system generally includes a crosspoint switch in the local data collection system having multiple inputs and multiple outputs including a first input connected to the first sensor and a second input connected to the second sensor. The multiple outputs include a first output and a second output configured to be switchable between a condition in which the first output is configured to switch between delivery of the first sensor signal and the second sensor signal and a condition in which there is simultaneous delivery of the first sensor signal from the first output and the second sensor signal from the second output. Each of multiple inputs is configured to be individually assigned to any of the multiple outputs. Unassigned outputs are configured to be switched off producing a high-impedance state. The crosspoint switch includes a third input that is configured with a continuously monitored alarm having a pre-determined trigger condition when the third input is unassigned to any of the multiple outputs.

Abstract: A device for detecting defects during sealing of a package including a foil, and a method for detecting defects during sealing of a package including a foil which makes use of such a device. The device may include a distance sensor for determining the distance between at least two clamping elements, and a control unit coupled to the distance sensor for comparing the measured distances to predefined references. Such a device may be operated by, for example, positioning a foil and another part of a package to be connected to the foil between the clamping elements, moving the clamping elements toward one another until a connection between the foil and the other part of the package is formed, determining the distance between the clamping elements over a period, moving the clamping elements apart, and removing the package.

Abstract: A tire testing apparatus and method for detecting anomalies in the surface of a tire is disclosed. A high voltage probe having a conductive spring electrode is placed adjacent a portion of a tire surface such that the conductive spring electrode is compressed against the surface of the tire. Relative motion is imparted between the high voltage probe and the surface of the tire. An electrical discharge occurs between the high voltage probe and a reference electrode at the location of an anomaly on the surface of the tire. The apparatus and method are configured to determine a precise azimuthal and radial position on the tire of the electrostatic discharge. The conductive spring electrode can have a length sufficient to ensure contact with a given point on the tire surface during a charge cycle for the high voltage probe at increased tire surface speeds.

Abstract: A geomembrane liner for a containment system including liner panels and connected by a seam at overlapped edges, with the top panel having a conductive lower surface which is non-conductive across the seam. Heat welding of the seams is accomplished by a welder having a heating unit with a projection which interrupts the conductive lower surface of the top panel before forming the seam. Such seams may be used separately or selectively with a lined containment system having a plurality of liner panels covering at least a portion of the containment system bottom. The liner panels have a conductive lower surface and overlap with adjacent panels, and conductive members underlie adjacent panels and contact the conductive lower surface of both adjacent panels to provide an electrical connection between the conductive lower surfaces of the adjacent panels.

Abstract: A load testing machines includes: six resistance units; six cooling fans; insulators between the resistance units and the cooling fans; and connection cables, in which: each of the resistance units includes a plurality of steps of resistor groups arranged in a z-direction and each formed of a plurality of rod-shaped resistors parallel to a x-direction connected together in series arranged at predetermined intervals in a y-direction; the six cooling fans face the resistance units, respectively, in the z-direction; the connection cables are cables used for serially and detachably connecting resistor groups next to each other in the y-direction of two resistance units next to each other in the y-direction with an interval of not smaller than a second distance in between; and the insulators each have a size corresponding to the rated voltage of a target power supply of a power supply load test to be conducted using a resistance unit group.

Abstract: A contactor is brought into contact with and separated from an electrode formed on a test target, and includes an elastic member that overlaps with a conductive member having a contact and which urges the contact in a pressing direction. The elastic member is fixed at a predetermined fixed position in a state projecting to the outside of a main body member and the conductive member is electrically connected from the outside of a housing of the main body member of the contactor.

Abstract: A tire testing apparatus and method for detecting anomalies in the surface of a tire is disclosed. A high voltage probe having a conductive spring electrode is placed adjacent a portion of a tire surface such that the conductive spring electrode is compressed against the surface of the tire. Relative motion is imparted between the high voltage probe and the surface of the tire. An electrical discharge occurs between the high voltage probe and a reference electrode at the location of an anomaly on the surface of the tire. The apparatus and method are configured to determine a precise azimuthal and radial position on the tire of the electrostatic discharge. The conductive spring electrode can have a length sufficient to ensure contact with a given point on the tire surface during a charge cycle for the high voltage probe at increased tire surface speeds.

Abstract: An automatic failed roll condom detection and removal apparatus wherein failed roll condoms are rapidly removed from a testing mandrel such that shut down of the testing and handling equipment is not required. Detection means detect the presence of a failed roll condom on a testing mandrel as it returns from the testing and removal station and ejection means remove the failed roll condom from the mandrel. The ejection means has a series of rotating brushes having relatively stiff bristles, the brushes being mounted on a reciprocating carriage in ascending manner in the mandrel return travel direction. When a failed roll condom is detected, the shuttle carriage return rate is slowed and the rotating brushes are brought into contact with the failed roll mandrel, each brush in succession pushing or rolling the condom higher on the mandrel until the final brush ejects the condom.

Abstract: Inspection and leak detection of electrically insulated containers having an electrically conductive solution therein in high speed assembly carrier line systems, includes controlled carrier structure and methods for carrying, conveying, orientating, and spinning the containers in a desired line of travel for high frequency high voltage spark testing workstation processing. A plurality of carriers convey the containers along a pathway to a particular orientation relative to a high voltage leak detection system to obtain an electric current volume reading.

Abstract: A condom testing apparatus having a plurality of electrically conductive mandrels having condoms loaded thereon, a first set of condom-contacting electrode members, a second set of condom-contacting electrode members, and a gapped electrical circuit between each of the mandrels and the first set of condom-contacting electrode members and between each of the mandrels and the second set of condom-contacting electrode members during testing, wherein defects within a condom being tested are detected by passage of current between the mandrels and the first and second sets of condom-contacting electrode members, wherein the first set of condom-contacting electrode members contacts less than 100 percent of the circumference of each of the condoms and the second set of condom-contacting electrode members contacts less than 100 percent of the circumference of each of the condoms, such that two condoms can be tested at once.

Abstract: A weapon detector system including a detecting gate which is placed on the inside of an entrance; a central processing unit connected by wire with transmitter coils and receiver coils of the detecting gate; and an image receiving device, a warning indication lamp and a photographing device that are wirelessly controlled by the central processing unit; wherein the detecting gate includes side panels connected together, a first side panel containing the transmitter coils and a second side panel containing the receiver coils, the first and second side panels standing on opposite sides of the entrance facing each other, and the insulating material situated on a suitable position of a metallic frame surrounding the entrance for preventing a scattering and vortex phenomenon.

Abstract: An apparatus for detecting a flaw in a tire includes a voltage generator producing a high voltage pulse on an electrical conductor. The electrical conductor is oriented with respect to the tire to establish an electric field within the tire. Relative motion between the tire and the electrical conductor occurs such that an electric arc extends from the electric field through a flaw when a flaw is proximate the electric field. A flaw detection circuit is capacitively coupled to the electrical conductor and receives a signal indicative of a voltage signal on the electrical conductor. The circuit further includes means for determining if the frequency of the received signal is greater than a predetermined threshold frequency, and if so, producing an indicator signal indicating the presence of the flaw.

Abstract: A sliding plug for working on and testing pipes is presented. The sliding plug includes a center portion and a gasket disposed about the central portion. When towed through the pipe, the sliding plug maintains a substantial seal against water flowing through the pipe. In some embodiments, a flexible gasket can be utilized to allow for substantial sealing while the sliding plug is traversing obstacles in the pipe. The sliding plug according to the present invention can be utilized in pipes where conventional plugs are inconvenient. For example, in FELL testing a sewage line, a sliding plug can be attached to a sonde cable and the testing can proceed without plugging and surcharging the section of pipe to be tested. In some embodiments, the sonde can include a pressure transducer which may be monitored to indicate that there is a sufficient water level at the sonde and, in some embodiments, to indicate a leak in the pipe by a drop in the water pressure.

Abstract: The invention provides an efficient inspection method for inspecting a hermetically sealed package for pinholes, in which when a hermetically sealed package whose contents such as electrically conductive fluid or food are covered with an electrically insulating film is inspected for pinholes by using a high voltage, the inspection can be achieved with an extremely simple procedure while fully preventing occurrence of misoperations due to the atmosphere such as humidity during the inspection. In a hermetically sealed package in which contents 1 such as electrically conductive fluid are covered with an electrically insulating film 2, an electrical conductor 4 derived from a voltage output terminal of a DC high voltage power supply 6 is put into contact with or proximity to a side face portion 31 of the hermetically sealed package, by which the contents 1 in the hermetically sealed package 3 are electrified.

Abstract: An apparatus for detecting flaws in a tire. The apparatus may contain a frame sized to be placed in the interior of the tire, at least one device operably connected to the frame so that upon rotation of the tire the frame travels around the interior of the tire, where the frame is substantially supported by the tire, and at least one pin attached to the frame, where the at least one pin is adapted to be connected to a voltage generator to create an electric field near the surface of the tire when in use so that an electric arc is produced upon the presence of a flaw in the tire.

Abstract: An inspection method for inspecting a hermetricaly sealed package for pinholes in which electrically conductive contents are covered with an electrically insulating film, an electrical conductor connected to a high voltage output terminal of a DC high voltage power supply is put into contact with a side face of the hermetrically sealed package to electrify the contents. Next, a terminal of a lead wire which is grounded is put into close contact or proximity to an inspection portion of the package where pinholes are more likely to occur. Then, a discharge current derived fom the inspection objection portion that flows only when a pinhole is present is detected by discharge current detector.

Abstract: The invention describes two alternative methods and corresponding devices for producing an energy signal yn whose amplitude values represent the energy of an electrical signal sn.

Abstract: A control unit (1) interacting with a strip packaging material to which are applied, to close respective openings (3) in the packaging material, a number of patch elements (5) and a number of tear-off tongues (6) heat sealed to respective patch elements (5). To determine the integrity of the patch elements (5), the unit has at least one contact surface (21) at an operating electric potential (Va) and cooperating with the side of the packaging material (4) having the patch elements (5) to define one plate of a capacitor (23), the other plate of which is defined by an aluminium film (4a) of the packaging material (4), and the dielectric of which is defined by the heat-seal plastic material interposed between the plates; and a detecting circuit (26) connected to the contact surface (21) and to the aluminium film (4a) to detect an electric quantity related to variations in the dielectric strength of the dielectric of the capacitor (23) and so determine the presence of any microholes in the patch elements (5).

Abstract: An apparatus for detecting flaws in a tire. The apparatus may contain a frame sized to be placed in the interior of the tire, at least one device operably connected to the frame so that upon rotation of the tire the frame travels around the interior of the tire, wherein the frame is substantially supported by the tire, and at least one pin attached to the frame, wherein the at least one pin is adapted to be connected to a voltage generator to create an electric field therein and near the surface of the tire when in use so that an electric arc is produced upon the presence of a flaw in the tire.

Abstract: Particles in a fluid cause an arc at a certain electric field whose value depends on the nature of the particles (size, composition, and the like). By applying an electric field across the fluid and determining the value of the electric field at which the arc occurs, the nature of the particles can be determined. For example, if their composition is known, their size can be determined, and vice versa. The device for carrying out such testing has a first electrode with an interior opening and a second electrode having a pin through the interior opening to define a passageway for the fluid. The electric field is varied, either by varying a voltage applied between the electrodes or by forming the passageway to be tapered. Multiple such passageways can be provided, as by forming the first electrode from honeycomb-expanded metal, thus reducing pressure drop, energy consumption without decreasing sensitivity to low concentrations.

Abstract: An apparatus for detecting flaws in a tire. The apparatus may contain a frame sized to be placed in the interior of the tire, at least one device operably connected to the frame so that upon rotation of the tire the frame travels around the interior of the tire, wherein the frame is substantially supported by the tire, and at least one pin attached to the frame, wherein the at least one pin is adapted to be connected to a voltage generator to create an electric field therein and near the surface of the tire when in use so that an electric arc is produced upon the presence of a flaw in the tire.

Abstract: A withstand voltage testing apparatus and an automatic testing method thereof are capable of testing a withstand voltage by contacting/separating a test probe to/from a test position of an electronic product automatically and not manually. When a pallette is transported through a conveyor, the pallette is fixed by raising a stopper. Then, it is determined whether a monitor assembly as loaded on the transported pallette has arrived at an operating position. Vibration of the pallette is prevented by moving a pusher horizontally forward to contact one side of the pallette to press the pallette. A test probe moves forward and contacts the test position of the monitor assembly in order to perform a predetermined test. After testing is completed, the test probe connecting the monitor assembly moves backward and the fixed pallette is released by moving the pusher backward. After lowering the stopper, the pallette is transported to perform a next stage of the process.

Abstract: An inspection method for inspecting hermetically sealed packages for pinholes, in which when a hermetically sealed package whose contents such as electrically conductive fluid or powder or food are covered with an electrically insulating film is sandwiched between a pair of electrodes and inspected for pinholes with a high voltage applied thereto, occurrence of operation errors due to the atmosphere such as humidity during the inspection is fully prevented. A hermetically sealed package whose contents such as electrically conductive fluid are covered with an electrically insulating film is placed on a grounded support electrode with a side face portion of the hermetically sealed package in contact therewith, and a DC high voltage is applied between the support electrode and an electrode put into close contact with an inspection-object end portion of the hermetically sealed package where pinholes are most likely to occur.

Abstract: The invention describes two alternative methods and corresponding devices for producing an energy signal yn whose amplitude values represent the energy of an electrical signal sn.

Abstract: A condom testing apparatus utilizing an arcing electrical current to detect holes and excessively thin wall areas in a condom mounted on a conductive testing mandrel, where the condom is passed across a conductive fabric member to test the main body and transition portion of the condom, and is passed through the bristles of a conductive brush member to test the nipple end of the condom. In alternative embodiments, the apparatus may utilize only conductive fabric or only conductive brushes.

Abstract: An apparatus for testing a tire. The tire has sidewalls and a tread portion. The tread portion has inner and outer surfaces. The apparatus comprises a tire lift. The tire lift has a main frame and a subframe. The subframe engages the main frame and is movable in a vertical direction. First and second drive rollers are operably connected to the subframe and arranged to support the tread portion. A stabilization roller is operably connected to the tire lift. The stabilization roller is arranged and configured to be placed proximal to one of the sidewalls. First and second electrodes are operably connected to the tire lift. The first and second electrodes are arranged and configured to be positioned on opposite sides of the tread portion. A power supply is arranged and configured to create an electrical potential between the first and second electrodes.

Abstract: Methods and apparatus for identifying in real time an operating condition of an in-service electrical device which draws a power load by monitoring spectral content of the power signature and associating spectral components with device operating conditions. In the preferred embodiment, motor (12) power line current signature is sampled by data conditioning sampler (18). Preprocessor (30) spectrally separates the current signature into plural frequency domain components having respective frequency and magnitude values. Spectral characteristic component selector filter (40) selects for analysis at least one specific spectral component by referencing a base of stored knowledge of operational characteristics of the motor. A neural network (50) associates without supervision the selected detected spectral component with an operating condition of the motor (12). The base of stored knowledge is updated with new operating condition associations which have been made during real-time monitoring.

Abstract: A tester is provided for measuring the dielectric integrity of a rope, on a continuous basis. The device incorporates a pair of rope contact and retention members, that may comprise pair of spring-loaded clamps, adapted to make electrical contact with the rope, while permitting the rope to be drawn longitudinally through the device. The contact or retention members may either be adapted to make a sliding contact with the rope or may employ wheels or roller members to facilitate the movement of the rope through the device. The contact members are linked to an electrical testing circuit for measuring the conductivity of the rope segment under test. The contact and retention members may also comprise an iris having an array of flexible leaves extending inwardly from an annular retainer, with the leaves being linked to the testing circuit and adapted to press against a rope inserted within the retainer. Some or all of the leaves are connected to the testing circuit.

Abstract: A detector for continuously monitoring the integrity of a coating on a piece of material. The detector includes an upper bar and a lower bar held near the surfaces of the material. Each bar carries multiple conductive probes in contact with the corresponding surface and electrically connected to an electronic detection circuit. Adjacent probes are connected to electric terminals having different voltage potentials. When probes from the same bar carrying different voltages short together, such as by contacting the surface of conductive sheet material, the detection circuit signals an insufficiently coated area has been found. The short between probes must be large enough to cause a short for more than a predetermined time. The upper probe bar is rotatable to prevent damage to the upper probes by a bent edge on a sheet of material.

Abstract: Process and apparatus for examining the porosity of coated objects, and in particular of enamelled, electrically conductive strip and profiled material or objects, and in particular of hollow bodies such as beverage cans, in which electrical contact is made with the strip and profiled material or the hollow body to form one pole for an applied test voltage, an electrically conductive connection is made to a coated surface of the strip and profiled material or to the hollow body by means of a continuous stream or curtain of electrolytic fluid emanating from a nozzle, to form the opposite pole for the applied test voltage and wherein the current flowing from the one pole through a stream or curtain of liquid and the coating to the other pole is measured as a measure of the porosity of the coating.

Abstract: A detector for detecting leakage or weak points in a package which is continuously moveable relative to the detector includes a detector element which is resiliently mounted for movement transverse to the feed direction of the package. The detector element includes at least one electrical conductor and a guiding part for guiding the electrical conductor toward that part of the package which is to be detected.

Abstract: A detector for detecting conductive materials contained in a stringy material sensitively, which is a cylindrical microwave cavity resonator (1) comprising a peripheral part (9) and two circular plates (10) covering the ends of the peripheral part. At least one of the circular plates has cylindrical protrusion (4) at its center. In the peripheral part, an antenna (5) for the generation of discharge is provided. In the protrusion (4) a detecting means (6) for discharge is provided. Paths (3,8) or a notched part (7) for the stringy material to be measured which passes through a high electric field formed by the protrusions and penetrate the cylindrical microwave cavity resonator oscillating at a fixed frequency, discharges are generated by the strong electric fields concentrated on the very small metals. Since sounds, light, and electromagnetic waves are generated at this time, the very small metals can be detected sensitively with discharge detecting means such as a microphone, a photodetector and an antenna.

Abstract: An on-line capacitance sensing system, including a capacitance sensor, for measuring changes in thickness of a plastic film which passes over the sensor in contacting relationship; the sensor is mounted to a carriage which may be reciprocated transversely across the width of the film, and a partial vacuum is applied to the sensor to assist in holding the moving plastic film in contacting relationship against the sensor.

Abstract: A web roller is provided with at least two electrodes that are positioned parallel to each other on the roller surface end parallel to the longitudinal axis of the roller. Slip rings provide individual electrical connections to the electrodes. The electrodes are spaced apart a distance which permits both electrodes to be in contact with a web of sheet material of the type having a conductive center sandwiched between layers of insulating sheet. A position detector, positioned to detect the rotation of the roller, provides a pulse signal of a known magnitude to one of the electrodes, through a slip ring, when the electrodes are in contact with the web of sheet material. A sensor coupled to the other electrode, through a slip ring, receives the pulse signal after it has passed through the sheet material located between the two electrodes. The magnitude of the received pulse is a function of the resistivity of the sheet material.

Abstract: Disclosed is a method for measuring the metal exposure in a resin covering area of a metal container or a constituent member thereof, which comprises contacting the resin covering area of the metal container or the constituent member thereof with a measuring electrode through an electrolytic solution, relatively moving the resin covering area and the measuring electrode in a certain direction while always holding the electrolytic solution between the measuring electrode and the resin covering area, measuring a leak current between the metal substrate of the metal container or constituent member at predetermined pitches and detecting the metal exposure of the resin covering area as leak currents at respective parts discriminately.According to this measuring method, the degree of the metal exposure can be easily measured as the leak current at respective parts discriminately, and statistical processing of the measured leak current values can be easily performed.

Abstract: Dielectric testing of rubber or plastic gloves, particularly an apparatus for suspending a plurality of pairs of water-filled gloves, then immersing the gloves into a water test tank. A high voltage test circuit includes a source of electrical power connected to the water test tank and a plurality of individual electrodes extending into each water-filled glove. Individual test circuits for each electrode enable continued testing, notwithstanding failure or removal of any one glove.

Abstract: A method is disclosed for checking and obtaining in a moving mode the continuity of a metal covering on a metal wire of different nature belonging to the group of a wire being treated by a current strength and issuing from a covering bath and wire, the treatment of which is achieved and coming from a storage wheel. The method comprises continuously bringing the coated wire in contact with a volume of electrolyte solution chemically and physically inert with respect to the wire, and in which the sensitive part of a reference electrode is immersed, sliding the wire issuing from the volume against an electrical contact, measuring the electrical potential variations between the electrode and the contact, and when the potential current oscillates, noting the poorly covered wire and increasing the current strength on the wire being treated.

Abstract: Disclosed is an apparatus for determining the eccentricity of insulation on an elongated conductor comprising two flat parallel opposing electrodes positionable on opposite sides of an insulated conductor in physical contact with the insulation of the conductor, means for moving one of the two electrodes relative to the other in a direction parallel to the electrodes, whereby the insulated conductor is rotated therebetween, electrical contact means for making electrical contact to the conductor, means for translating the electrical contact means at the same rate that the insulating conductor is translated between the two flat opposing electrodes, and electrical means for determining the ratio of the capacitance of each of the two electrodes to the conductor as the insulating conductor is rotated between the two electrodes.

Abstract: A machine for the automatic testing of electric motor rotors comprises a system for checking various characteristics of rotors arriving from a line of production thereof, in which system there are preset theoretical values of the various characteristics to be detected which are compared with the values detected on each rotor. Also provided in the machine is a display apparatus and/or a printer of the detected values, as well as a system of identification, in the tested rotor, of the type of characteristic whose detected value differs beyond an acceptable field of tolerance from the preset theoretical value.

Abstract: A method and apparatus are disclosed for detecting the continuity of nonconductive coatings on conductive web materials, such as rolls of metallic foils. The coated side of the sheet material web contacts a conductive surface and electrical resistance of the coating is measured. The apparatus for measuring the resistance of the coating may be adjusted to permit small gaps in the coating to be bypassed while being triggered by major gaps in the coating.