| Patent Number |
Title Of Patent |
Date Issued |
| RE31668 |
Load survey recorder for measuring electrical parameters |
September 11, 1984 |
| A survey recorder for measuring electrical loads and providing a magnetic tape record of data with time reference signals in format capable of providing computer compatible information. The data recording circuit utilizes a light emitting diode with a phototransistor to determine each |
| D294565 |
Voltage transformer |
March 8, 1988 |
|
| D293431 |
Current transformer |
December 29, 1987 |
|
| D289033 |
Voltage transformer |
March 31, 1987 |
|
| D288314 |
Current transformer |
February 17, 1987 |
|
| D251899 |
Tachograph indicator card |
May 22, 1979 |
|
| 4906995 |
Data compression apparatus and method for data recorder |
March 6, 1990 |
| A data compression method and apparatus particularly suitable for use in electrical power line fault data recorders. The system performs both gain compression and frequency compression. For gain compression, a predetermined number of samples are analyzed to determine a gain setting c |
| 4879558 |
Data compression apparatus and method for data recorder with waveform envelope display |
November 7, 1989 |
| A data compression method and appartus particularly suitable for use in electrical power line fault data recorders. The system performs both gain compression and frequency compression. For gain compression, a predetermined number of samples are analyzed to determine a gain setting co |
| 4875783 |
Temperature transducer for KYZ pulse recorder |
October 24, 1989 |
| An improved temperature transducer for use with a KYZ pulse data recorder. A temperature sensor provides a temperature signal proportional to ambient temperature. An integrator circuit and comparator circuit responsive to the temperature signal provides pulses at a frequency which is |
| 4847554 |
Current measuring and magnetic core compensating apparatus and method |
July 11, 1989 |
| DC magnetic flux bias imposed on a magnetic core of a current transformer is compensated in response to an indication of the amplitude and duration of opposite polarity secondary winding current components. In a second embodiment, the magnetic bias is compensated by responding to the int |
| 4827123 |
Direction sensitive optical shaft encoder |
May 2, 1989 |
| A direction sensitive optical shaft encoder includes an optical shutter disk mounted to a shaft for rotation therewith, the optical shutter disk bearing at least first and second radially concentric tracks having alternating light transmissive and light blocking areas formed thereon. |
| 4804938 |
Distribution energy management system |
February 14, 1989 |
| A bidirectional data communications distribution network is established between the system operations center (SOC) and customer terminals of a load management and electrical energy distribution system. The distribution network comprises independent processor controlled, primary commu |
| 4791362 |
Modularized solid state register |
December 13, 1988 |
| A modular meter assembly includes replaceable modules for a power supply, a register, a function controlling option circuit and a display of a measuring meter. The modules are provided with mechanical and electrical interconnectors, permitting for simplified assembly, repair, maintenance |
| 4789837 |
Switched capacitor mixer/multiplier |
December 6, 1988 |
| A sequence of samples of a time varying signal is multiplied by respective, corresponding, multiplicands corresponding to values of a separate signal. The multiplicands are provided as ratios of capacitances switched into and out of a circuit between the input time varying voltage and an |
| 4713198 |
High temperature plastic scintillators |
December 15, 1987 |
| A plastic scintillator comprises a polymethylpentene thermoplastic material containing a fluorescent additive. This plastic scintillator material functions at high temperatures with excellent optical properties in the detection of neutrons. The plastic scintillator may also include an en |
| 4710675 |
Solid dynode structure for photomultiplier |
December 1, 1987 |
| A photomultiplier includes a solid disk dynode and a pair of annular guiding electrodes disposed about the disk dynode transversely along the central axis of the photomultiplier tube on opposite sides of the dynode. The secondary and subsequent dynodes may be of conventional (e.g. veneti |
| 4698522 |
Structure for Hall device for compensation of first and second order voltage offsets |
October 6, 1987 |
| A Hall device is formed from a generally rectangular body of material exhibiting the Hall effect, with two excitation electrodes disposed along opposite edges of the device. Two Hall output voltage electrodes are disposed along one of the remaining edges of the main body and at least |
| 4697182 |
Method of and system for accumulating verifiable energy demand data from remote electricity mete |
September 29, 1987 |
| A solid state electricity demand recorder (10) is controlled by a programmable microprocessor (38) to obtain energy demand survey and billing data. The accumulated count of pulses during a record interval is compared with an encoded register reading obtained from an electricity meter |
| 4697181 |
System for accumulating verifiable energy demand data from remote electricity meters |
September 29, 1987 |
| A solid state electricity demand recorder (10) is controlled by a programmable microprocessor (38) to obtain energy demand survey and billing data. The accumulated count of pulses during a record interval is compared with an encoded register reading obtained from an electricity meter |
| 4697180 |
System for accumulating verifiable energy demand data from remote electricity meters |
September 29, 1987 |
| A solid state electricity demand recorder (10) is controlled by a programmable microprocessor (38) to obtain energy demand survey and billing data. The accumulated count of pulses during a record interval is compared with an encoded register reading obtained from an electricity meter |
| 4695742 |
Charge balance voltage-to-frequency converter utilizing CMOS circuitry |
September 22, 1987 |
| A charge balance voltage-to-frequency converter utilizes CMOS circuitry to provide a digital pulse output proportional to an analog input signal. The converter approaches a desired charge balance by cycling between a charging and a discharging state. A clock signal provided by a stable |
| 4686460 |
Solid state electricity meter display |
August 11, 1987 |
| In a solid state electricity meter, a display consisting of a number of juxtaposed display elements provides, in a vector form, an indication of the direction and range of power flow in the line being measured. Circuitry for driving the vector display comprises a first memory storing |
| 4682169 |
Method of and system for accumulating verifiable energy demand data from remote electricity mete |
July 21, 1987 |
| A solid state electricity demand recorder (10) is controlled by a programmable microprocessor (38) to obtain energy demand survey and billing data. The accumulated count of pulses during a record interval is compared with an encoded register reading obtained from an electricity meter |
| 4670737 |
Method of initializing an optical encoder |
June 2, 1987 |
| A method of initializing the position of an optical shaft encoder without having to precisely index the encoder with respect to its shaft. The optical encoder includes an optical shutter mounted for rotation with the shaft and light emitters and light detectors associated with the optica |
| 4665359 |
Method and apparatus for detecting tampering with a meter having an encoded register display |
May 12, 1987 |
| Tampering with an optically encoded meter display register or metering mechanism can be readily detected by comparing the quantity shown by the meter display with the encoded values of the optical encoders. A discrepancy is indicative of tampering with the register display. Any tampe |
| 4653076 |
Timing signal correction system for use in direct sequence spread signal receiver |
March 24, 1987 |
| A direct sequence spread spectrum transmitter and receiver can be synchronized when the timing reference frequency is less than or equal to the data sampling rate and the ratio of the data sampling rate to the timing reference is an integer by combining two, four or eight consecutive |
| 4644523 |
System for improving signal-to-noise ratio in a direct sequence spread spectrum signal receiver |
February 17, 1987 |
| A plurality of transmitters synchronized to a common clock each transmit a data signal spread by a common bipolar pseudo-random code having a different assigned code sequence shift. A receiver, synchronized to the clock, discriminates the signal transmitted by a predetermined transmitter |
| 4639728 |
Method of and system for accumulating verifiable energy demand data from remote electricity mete |
January 27, 1987 |
| Pulses generated by the pulse initiator of an electricity meter (30) are counted during successive measurement intervals. The pulse count for each interval is stored in the solid state memory (42) of a recorder (10), to be thereafter transmitted to a central computer and printed and/or |
| 4639638 |
Photomultiplier dynode coating materials and process |
January 27, 1987 |
| The photosensitivity of a photomultiplier dynode to white light or infrared radiation is greatly reduced by coating the dynode with a layer of an alkali halide material having good secondary electron emission characteristics. A method of applying the coating to the dynode is also des |
| 4631604 |
Biasing for magnetic circuits |
December 23, 1986 |
| A magnetic circuit, such as used in a magnetic recording head, or with a Hall-effect device, is biased by applying signals having noise-like properties to the magnetic circuit. Since the biasing signals will be effectively uncorrelated with other signals being applied to the magnetic |
| 4601047 |
Code division multiplexer using direct sequence spread spectrum signal processing |
July 15, 1986 |
| A plurality of transmitters synchronized to a common clock each transmit a data signal spread by a common bipolar pseudo-random code having a different predetermined assigned code sequence shift. A receiver, synchronized to the clock, discriminates the signal transmitted by a predete |
| 4588982 |
Optical shaft encoder |
May 13, 1986 |
| An optical shaft encoder includes an optical shutter mounted to a shaft, the shutter bearing light transmissive and light reflective areas, at least a first light emitter and a first light detector arranged adjacent one another on one side of the optical shutter, and at least a second |
| 4588949 |
Meter removal indicator |
May 13, 1986 |
| Electricity meter fraud is detected by incorporating a unidirectional cyclometer-type register into a meter. The register is actuated each time the meter and cover assembly (which is factory sealed) is removed from its associated socket by an actuating arm assembly which is in contact wi |
| 4582220 |
Construction for gas meter cover |
April 15, 1986 |
| A gas meter in which the index and register thereof is directly housed within the main gas chamber of the meter itself. An integrally molded plastic cover which is visually transparent provides the means for mounting the index and in part forms the gas chamber. The index register is |
| 4578213 |
High temperature plastic scintillator |
March 25, 1986 |
| A plastic scintillator comprises a polymethylpentene thermoplastic material containing a fluorescent additive. This plastic scintillator material functions at high temperatures with excellent optical properties in the detection of neutrons. |
| 4567588 |
Synchronization system for use in direct sequence spread spectrum signal receiver |
January 28, 1986 |
| A plurality of transmitters synchronized to a common clock each transmit a data signal spread by a common bipolar pseudo-random code having a different assigned code sequence shift. A receiver, synchronized to the clock, discriminates the signals transmitted by a predetermined transm |
| 4561089 |
Correlation detectors for use in direct sequence spread spectrum signal receiver |
December 24, 1985 |
| A plurality of transmitters synchronized to a common clock each transmit a data signal spread by a common bipolar pseudo-random code having a different assigned code sequence shift. A receiver, synchronized to the clock, discriminates the signal transmitted by a predetermined transmitter |
| 4525669 |
Power measurement in an electrical distribution system having three or more wires |
June 25, 1985 |
| A system for measuring power in an electrical distribution circuit having at least three wires includes a Hall-effect generator directly coupled to one of the live wires of the circuit and current transformers coupled to the other live wires of the circuit. The output of each current |
| 4522737 |
Electrolytes for electrolytic capacitors |
June 11, 1985 |
| An electrolyte for electrolytic capacitors comprises an alkyl glycol of 2 to 4 carbons; ammonium formate; and either a dicarboxylic acid of 2 to 8 carbons or its diammonium salt, wherein the ammonium ion is of the formula NH--(R).sub.3 in which R is H, or alkyl or alkanol of 1 to 7 carbo |
| 4521830 |
Low leakage capacitor header and manufacturing method therefor |
June 4, 1985 |
| A capacitor header having the mechanical characteristics of a modulus of elasticity in the range from 50,000 to 200,000 psi and a tensile strength in the range from 3,500 to 80,000 psi has pressure formed therein on the aluminum terminal of which portions thereof have been increased in t |
| 4521761 |
Small outline potentiometer |
June 4, 1985 |
| A single-turn miniature potentiometer includes a first substrate having an annular conductive track formed thereon and a second substrate facing the first and having an annular resistive track formed thereon. An insulating layer is placed between the two substrates and has an opening pro |
| 4509128 |
Solid-state electrical-power demand register and method |
April 2, 1985 |
| A solid-state demand register is described for determining the maximum electrical-power demand made on an electric utility by a load. The register, which employs a microprocessor, provides noncumulative, cumulative, and continuous-cumulative electrical-power demand measurement capabi |
| 4486707 |
Gain switching device with reduced error for watt meter |
December 4, 1984 |
| A gain switching apparatus for a signal is controlled by a switching function formed as a function of the signal. The apparatus is provided with a circuit for reducing errors due to common frequency components in the switching function and in the signal being switched thereby. In order |
| 4480286 |
Capacitor case insulation and method of installation |
October 30, 1984 |
| A power factor capacitor made with case to housing insulation of thin electrical grade polypropylene in multilayers to greatly exceed basic impulse level voltage test requirements. |
| 4458414 |
Method of manufacturing a low leakage capacitor header |
July 10, 1984 |
| A capacitor header having the mechanical characteristics of a modulus of elasticity in the range from 50,000 to 200,000 psi and a tensile strength in the range from 3,500 to 80,000 psi has pressure formed therein on the aluminum terminal of which portions thereof have been increased in t |
| 4447346 |
Electrolyte system for electrolytic capacitors |
May 8, 1984 |
| An essentially non-aqueous electrolyte composition for aluminum-anode capacitors is disclosed comprising ethylene glycol and a salt such as the ammonium or amine salt of an unsaturated dicarboxylic acid with or without a small amount of an additive such as boric acid, phosphoric acid, |
| 4440271 |
Viscous dampening arrangement for taut-band suspension |
April 3, 1984 |
| An improved viscous dampening arrangement for a taut-band suspension system in an electrical indicating instrument includes a hub associated with the stator and a turret associated with the rotor. The hub and turret each have central openings for receiving the taut-band. The hub and turr |
| 4433387 |
System for processing data received from a portable data store and for clearing the store |
February 21, 1984 |
| System and apparatus for treating data derived in serial pulse fashion from a source such as a meter. Data words are recorded upon a magnetic bubble memory which is portable and which includes real time and identification data in addition to pulse source data. The portable storage device |
| 4431966 |
Modular backlighted analog/digital instrument display |
February 14, 1984 |
| A modular backlighted analog/digital display for use in a cylindrical aircraft instrument housing. The analog indicator dial is backlighted by an illumination source diffused by a translucent light collecting plate having a configuration corresponding to that of the analog dial. A po |
| 4429344 |
Conductive foils for solid dielectric capacitor |
January 31, 1984 |
| Electrical contact between foil electrodes and conductive coated plates in a solid dielectric capacitor is improved by coating or embossing the foil electrodes with a conductive particulate material. |
