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Match Document Document Title
9013174 Motorized electrical switch mechanism  
A bistable relay may include a pair of contact arms. Each contact arm is configured to have a first end and a second end, such that, when the relay is in the closed position, current flows from...
8837118 Transformer instrumentation and metering system  
A combined current transformer and metering system is described, having a securable case, two or more current transformers each having a core and secondary windings connected to a secondary...
8390266 Method and device for determining a reference position of a locking part moved by an electric motor  
In a method and a device for determining a reference position of a locking part moved by an electric motor, the locking part is moved in the direction of the closed state thereof, until the same...
8264221 Eddy current probe assembly adjustable for inspecting test objects of different sizes  
An eddy current probe assembly suitable for inspecting a test object with longitudinal shape, being passed through the assembly in the object's axial direction during an inspection session, the...
8229646 Method and apparatus for monitoring gas turbine blades  
A method (and corresponding apparatus) for monitoring gas turbine blades. The output from an eddy current sensor monitoring the movement of turbine blades past the sensor is processed to determine...
8058876 Low cost current and temperature sensor  
A battery health or prognosis system may employ a ferrite disc embedded in a printed wiring board (PWB) to perform both a battery current sensing role and a temperature sensing role. The ferrite...
7856337 Method and apparatus for monitoring the rotational speed of the shaft of a gas turbine  
A method (and corresponding apparatus) for monitoring the rotational speed of the shaft of a gas turbine having a number of spaced blades on or rotating with the shaft. The invention compensates...
7817845 Multi-frequency image processing for inspecting parts having complex geometric shapes  
A method for detecting small cracks and other anomalies on parts having complex geometries is disclosed. The method includes eddy current inspection incorporating collection of data from...
6996482 Device and method for determining the position of a rotor  
The invention relates to a device and a method for determining an electrical starting rotor angle of an electromotor. According to the invention, the electromotor (10) is subjected to an...
6239588 Method of fabricating a magnetic shield for a plastic molded electricity meter frame  
Magnetic shields for plastic molded electricity meter frames are positioned to substantially block external magnetic fields from adversely affecting operation of meter components. The shield can...
5926014 Magnetic shield for plastic molded electricity meter frames  
Magnetic shields for plastic molded electricity meter frames are positioned to substantially block external magnetic fields from adversely affecting operation of meter components. The shield can...
5917317 Retarding magnet assembly for electricity meter  
A retarding magnet assembly includes magnets configured to apply a constant drag on the rotating disk of an electromechanical electricity meter. The assembly includes upper and lower keepers...
5442281 Method and apparatus for deriving power consumption information from the angular motion of a rotating disk in a watt hour meter  
An apparatus for recording information about the angular motion of a rotatable disk disposed in a first structure is provided. The disk has regions with differing properties with respect to...
5399966 Induction watt-hour meter rotary disc mounting and bearing system  
An electro-mechanical induction watt-hour meter bearing system that includes end cap pilot bearings snap fit onto respective opposite ends of the shaft. The bearing system also includes a lower...
5218291 Meter and meter driving system with indication fluctuation suppression and enhancement  
A meter driving system receives pulse signals from a sensor, counting frequencies or periods of the input signals. The counted results are weight-averaged to determine an output value and a value...
5148101 Method and apparatus for detecting and compensating for reverse rotation and creep of eddy current disk  
An apparatus and method to detect and avoid inaccuracies in an electronic energy meter due to reverse rotation of the eddy current disk in response to pull-back and creep of the disk, or...
5130641 Eddy wheel edge sensor  
A sensor for detecting the rotation of an eddy wheel in an electric power meter is described. The sensor includes a pair of light sources arranged to focus light on the edge of the wheel, and a...
4792677 System for use with a utility meter for recording time of energy use  
A system for use with standard electric meters having a rotatable disc for recording time of energy use. The system includes a housing securable within a meter below the disc. The system also...
4782286 Light load adjustment and air gap stabilization in voltage stators  
Non-magnetic metallic spacers are welded into the auxiliary air gaps of a voltage stator using welding passes arranged in a predetermined sequence. The presence of the spacers stabilizes the...
4673874 Annular rotor disk for electric meter  
A disk for an electric meter includes a solid annulus of a conductive material with a center of the annulus filled with a non-conducting material. The non-conducting material is preferably molded...
4673873 Identical left-right current stators for polyphase watthour meter  
A polyphase, socket-style meter employs identical left and right current stators. The angles about the meter disk, at which the left and right current stators are located, are adjusted to place...
4668884 Brushless motor  
A brushless motor (10) comprises a stator yoke plate (16) made of a magnetic material, to which both main surfaces the first and the second flexible printed circuit boards (20) (22) formed...
4617514 Disk and gear mounting in electric watthour meter  
A watthour meter frame for an electric watthour meter includes pairs of orthogonal machined plane surfaces against which bearings are urged for accurately positioning the ends of a disk shaft of...
4611167 Auxiliary winding for driving electric meter accessories  
A flux shunt includes a pickup plate parallel to, and closely spaced from, an outer surface of a voltage stator winding of a voltage stator for an electric meter drive apparatus. A flux-return tab...
4547730 Light load adjust apparatus for electric meter  
A light load adjustment for an electric meter includes a frame attachable to a core of a voltage coil and a pole-shading element slideable with respect to the frame. The pole-shading element...
4516213 Multiple rate metering system  
A multiple rate metering system suitable for use with an existing single rate, electromechanical electricity meter employing an Eddy current disc mounted in a casing, comprises a first unit...
4489384 Electro-optical sensor for watt-hour meter  
The electronic watt-hour meter (10) comprises an electro-optical watt-hour sensor (12) adapted to be coupled to a consumer's connection to a source of electric power for sensing voltage supplied...
4449094 Temperature compensated magnetic damping assembly for induction meters  
A temperature compensated magnetic damping assembly for providing a braking torque on an electroconductive disk of an induction device includes a pair of permanent magnets each having an easy axis...
4424485 Fixed light load adjustment assembly for induction meters  
An induction meter having a voltage magnetic section comprised of a substantially E-shaped laminated magnetic core having a center leg terminating at a main pole face and two adjacent legs...
4424484 Induction meter having an improved electromagnetic voltage section  
An induction meter has an improved voltage magnetic section comprised of a substantially E-shaped laminated magnetic core having a center leg and two adjacent legs. A nonmagnetic multi-function...
4423375 Self-aligned light load adjustment assembly for induction meters  
The present invention is for an induction meter having a voltage and a current magnetic section. The voltage magnetic section is comprised of a substantially E-shaped laminated magnetic core...
4386316 Brake magnet for watt-hour meters  
A brake magnet for watt-hour meters using permanent magnet material of low permeability of nearly one and high coercive strength in which exact temperature compensation for a required temperature...
4352979 Unidirectional register apparatus  
Unidirectional rotation of a register is produced by a ratchet assembly having a pivoting pawl member having two diverging wire segments, each of which discretely engages either of two sets of...
4327324 Anti-theft electric meter  
A watthour meter with a rotatable metering movement responsive to the flow of energy through the meter includes a gravity activatable contact or stop element to engage the metering movement when...
4321531 Direction sensitive pulse initiator for a wattmeter  
A direction sensitive pulse initiator for a watthour meter having a rotating disc. A pair of sensors sense the presence of an indicator portion or portions, on the rotating disc or on an auxiliary...
4238729 Magnetic damping system having low induction magnet  
A magnetic damping system for induction devices having electroconductive disk armatures includes a low induction, high coercive force magnet that is vertically elongated and has a horizontal...
4196946 Temperature compensated magnetic bearing system for a watthour meter  
A repulsion-type permanent magnet bearing system for watthour meters includes identical upper and lower permanent magnet assemblies. Each assembly includes a hollow cylindrical magnet including a...
4134089 Electromagnet for an extremely inverse time overcurrent protective relay  
An electromagnet for use in an extremely inverse time overcurrent relay, wherein extremely inverse relay performance is obtained as a result of the electromagnet's simplified design. The...
4083000 Rotating disc multielement polyphase meter  
A single disc multielement polyphase watthour meter having first and second electromagnetic assemblies which apply torque to the disc, the electromagnetic assemblies being mounted with the...
4034292 Direction sensitive opto-electronic pulse initiator for electrical meters  
An opto-electronic pulse initiator for producing meter data pulses from a meter having a rotating movement. A directionally oriented pattern containing at least two reflective surfaces is driven...
4030031 Magnetic damping system for induction watthour meters  
A new and improved magnetic damping system for induction watthour meters including electromagnetically driven disk armatures. The magnetic damping system comprises cobalt-rare earth permanent...
3962632 Rotating disc excess consumption watthour meter with restraining means movably mounted on the disc  
A restraining means of mildly magnetic material is adjustably implanted in the rotor disc of a conventional watthour meter. The restraining means interacts with a magnetic field generated by the...
3858115 INDUCTION VOLTS-SQUARED HOUR METER  
An induction volts-squared hour meter includes an electromagnetic section having a single coil mounted for inductively driving a rotatable conductive disc. A flux shaping member is disposed to...
3849876 MANUFACTURE OF WATT-HOUR METERS WITH WELDED PRECISE TORQUING  
The two electromagnets making up a watt-hour meter stator are locked to separate carriages, one adjustable vertically and the other horizontally. The torque they exert on an appropriately...
3815027 DETACHABLE POTENTIAL INDICATOR CIRCUIT ASSEMBLY FOR INDUCTION WATTHOUR METERS  
A detachable potential indicator circuit asembly for induction watthour meters includes an auxiliary winding coupled to the leakage flux of a meter coil for energizing a low power indicator lamp....
3796953 SOLID STATE POTENTIAL INDICATOR FOR WATTHOUR METERS  
A solid state potential indicator for watthour meters is mounted on the front of the meter movement. Solid state light emitters are oriented for direct viewing within the normal meter reading...
3787766 METER MAGNET WITH STRIP-WOUND CURRENT COIL  
The coils for a meter current magnet are each formed from a strip of copper, with insulative coating, wound upon itself. A lead-in from its inner end is formed by the strip itself which is...
3689837 POSITIONING MEANS FOR WATTHOUR METER FULL LOAD CALIBRATING SCREW  
A full load calibration screw assembly for an electric watthour meter is provided with a generally straight resilient spring member that is releasably mounted between a pair of bosses integrally...
3688192 MULTI-ELEMENT INDUCTION DEVICE HAVING COMMON ARMATURE AND POWER-FACTOR ADJUSTERS  
An induction watthour meter has multiple elements or electromagnets for applying torques to a common electroconductive armature. An element is provided with an E-shaped voltage electromagnet...
3657651 ONE PIECE METER CURRENT CIRCUIT  
A one-piece electric meter current circuit including integral current coil and meter connectors can be formed from a length of heavy wire. First its ends are thickened by axial thrust in a die,...

Matches 1 - 50 out of 92 1 2 >