| Patent Number |
Title Of Patent |
Date Issued |
| 4423477 |
Rectifier controller |
December 27, 1983 |
| A rectifier controller for controlling bridge connected silicon control rectifiers (SCRs) (1 to 6) of a three-phase rectifier which is used to supply a direct current (DC) voltage to an inverter (314) used for injecting pulse coded audio frequency signals on a power line. The control |
| 4422728 |
Liquid crystal mounting and connection scheme |
December 27, 1983 |
| A device for mounting a liquid crystal display (LCD) to a circuit board without requiring bolts, screws or auxiliary pieces, comprises a holder positioned between the LCD and circuit board and a cover member positioned around the LCD and holder. The cover member is formed with end clips |
| 4419667 |
System for controlling power distribution to customer loads |
December 6, 1983 |
| A method and apparatus which permits a power utility to have direct control of customers loads (CD) with a view toward facilitating enablement of a load management philosophy which includes peak shaving and load deferral. A master control station (MCS), which comprises a programmable |
| 4419666 |
System for controlling power distribution to customer loads |
December 6, 1983 |
| A method and apparatus which permits a power utility to have direct control of customers loads (CD) with a view toward facilitating enablement of a load management philosophy which includes peak shaving and load deferral. A master control station (MCS), which comprises a programmable |
| 4419665 |
System for controlling power distribution to customer loads |
December 6, 1983 |
| A method and apparatus which permits a power utility to have direct control of customers loads (CD) with a view toward facilitating enablement of a load management philosophy which includes peak shaving and load deferral. A master control station (MCS), which comprises a programmable |
| 4404522 |
Display connection scheme for modular analog/digital instrument |
September 13, 1983 |
| A modular analog/digital display for use in a cylindrical aircraft instrument housing is designed to enable the digital components to be assembled without interference to the analog meter mechanism. The digital display is of the leadless type and is clamped under compression to a cir |
| 4400667 |
Phase tolerant bit synchronizer for digital signals |
August 23, 1983 |
| A bit synchronizer for digital data signals capable of tracking phase errors of up to .+-.180.degree. without loss of lock. An input data signal is squared and then applied to a pair of D-type flip-flops. The flip-flops are alternately driven by a clock signal generated by a voltage cont |
| 4386314 |
Electricity theft preventing meter |
May 31, 1983 |
| An electricity meter has one of its bayonets provided with a movable barbed member which engages a terminal in the meter socket upon installation and causes the normal circuit to the measuring circuitry of the meter to be irrevocably broken when the meter is removed from the meter socket |
| 4386313 |
Electricity theft preventing meter |
May 31, 1983 |
| An electricity meter has one of its bayonets slidably carried by the meter base. When the meter is inserted in a meter socket, the bayonet in its normally retracted position conducts electrical power to the full potential coil. When the meter is removed, the socket functionally holds |
| 4386308 |
Hysteresis type battery charger having output short circuit protection |
May 31, 1983 |
| A hysteresis type battery charger includes a circuit for monitoring battery voltage and in response controlling a pass transistor to supply charging current to a battery. When the battery voltage is below a first predetermined value, high charging rate current is supplied to the batt |
| 4367467 |
LCD Display mount window |
January 4, 1983 |
| In a device for mounting a liquid crystal display (LCD) to a circuit board, a holder is positioned between the LCD and the circuit board and a cover member positioned around the LCD and holder is secured to the board. The LCD is recessed slightly within the cover member and is exposed th |
| 4361877 |
Billing recorder with non-volatile solid state memory |
November 30, 1982 |
| A billing recorder for providing a record of customer usage of electricity has a controller which may include a microprocessor for receiving and processing pulses from an electric meter. Data from one or more input channels is temporarily stored in random access memory by the controller |
| 4355361 |
Data processor apparatus for multitariff meter |
October 19, 1982 |
| The meter includes a kilowatthour register which is continuously engaged as well as at least one special register (kilowatthour or demand) which is selectively engageable. A calendar memory (ROM) stores data representative of schedule events and the times (called "calendar times") at whi |
| 4352147 |
Capacitor for high vibration environments having a controlled gas reservoir |
September 28, 1982 |
| An electrolytic capacitor capable of withstanding high vibration environments includes a cylindrical capacitor case having an open end and a closed end, and cylindrically rolled alternate wraps of electrolyte impregnated paper and metal foil films with tabs abutting the foil films to |
| 4352009 |
Variable ratio totalizer |
September 28, 1982 |
| A totalizer receives output pulses from two different meters and records them on a single data channel of a magnetic recorder. First and second memories are used alternately in successive demand intervals to store the outputs from both meters irrespective of which meter measured an event |
| 4348668 |
System for controlling power distribution to customer loads |
September 7, 1982 |
| A method and apparatus which permits a power utility to have direct control of customers loads (CD) with a view toward facilitating enablement of a load management philosophy which includes peak shaving and load deferral. A master control station (MCS), which comprises a programmable |
| 4347575 |
System for controlling power distribution to customer loads |
August 31, 1982 |
| A method and apparatus which permits a power utility to have direct control of customers loads (CD) with a view toward facilitating enablement of a load management philosophy which includes peak shaving and load deferral. A master control station (MCS), which comprises a programmable |
| 4346432 |
Rectifier controller responsive to sensed A.C. voltage signals |
August 24, 1982 |
| A rectifier controller for controlling bridge connected silicon control rectifiers (SCRs) (1 to 6) of a three-phase rectifier which is used to supply a direct current (DC) voltage to an inverter (314) used for injecting pulse coded audio frequency signals on a power line. The control |
| 4346421 |
Fault detector |
August 24, 1982 |
| A fault detector for detecting shoot-through conditions in series connected solid state rectifiers (326, 329) of a power inverter (314) is disclosed. A capacitor (311) discharges when a shoot-through occurs and the discharge current is detected by a current transformer (315). An SCR (317 |
| 4344076 |
Feedback sensor for remote receiver in a power transmission system |
August 10, 1982 |
| A feedback sensor which detects the reception of pulses and the response thereto by the remote receivers of a load management system associated with a power transmission system. The receivers are of the type which respond to pulsed messages injected onto the power lines and include e |
| 4335447 |
Power outage recovery method and apparatus for demand recorder with solid state memory |
June 15, 1982 |
| A demand recorder includes a microprocessor for receiving data pulses representative of measured events and formats the incoming data into demand intervals. After a predetermined number of demand intervals, called a collection period, the microprocessor transfers the data for more pe |
| 4333068 |
Position transducer |
June 1, 1982 |
| A sealed position transducer which is self-wiping and which is readily adaptable for providing both linear and nonlinear electrical outputs. The transducer includes a housing, a resistive element received in the housing, and a flexible membrane, having a conductive portion formed the |
| 4329060 |
Non-contacting workpiece gauging system |
May 11, 1982 |
| A system for finding the position of a workpiece surface relative to a reference through non-contact gauging. The system uses a radiant energy beam projected such that an illuminated spot moves along the workpiece surface with movement of that surface relative to the reference along a |
| 4327416 |
Temperature compensation system for Hall effect element |
April 27, 1982 |
| In a solid state current, power or energy meter having a Hall element magnetically coupled to line current, a system for compensating the Hall voltage for its dependence on temperature comprises a read only memory (ROM) containing experimentally obtained temperature compensation data. |
| 4321531 |
Direction sensitive pulse initiator for a wattmeter |
March 23, 1982 |
| 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 disc, to produce electrical signals which are decoded to initiate clockwise rotation pu |
| 4321530 |
Multimeter with tone indication |
March 23, 1982 |
| A digital multimeter having a tone generating circuitry and operable in a tone mode of operation for providing an audible indication when a measured electrical characteristic has a predetermined relationship with a reference value. The audible indication may be provided when a voltage |
| 4320345 |
Adaptive differential PSK demodulator |
March 16, 1982 |
| An adaptive differential phase shift keyed (PSK) signal demodulator which optimally tracks changes in the symbol rate of the signal. An input signal is delayed by one symbol period by passing the signal through a charge coupled device (CCD) clocked by pulses phase locked to the symbol ra |
| 4314313 |
Single and dual low inductance capacitor and header therefor |
February 2, 1982 |
| A capacitor which includes a case containing a capacitor element with multiple tabs extending therefrom is provided with a header which carries a pair of terminal members. Each of the terminal members has a pair of parallel connector leads extending out of the header connected by termina |
| 4313195 |
Reduced sample rate data acquisition system |
January 26, 1982 |
| A data acquisition system having plural input channels sampled at a first rate by a time division multiplexer applies the samples to a finite impulse response (FIR) discrete filter which generates output samples at a slower rate.The filter forms a set of summations ##EQU1## where |
| 4307394 |
System for driving a gas discharge display |
December 22, 1981 |
| An improved system for driving a gas discharge display which prevents streamers of ionized gas from forming between adjacent character positions. Each of a plurality of character positions has an anode driver to which anode drive signals are sequentially applied. All odd character po |
| 4303880 |
Gated precision offset circuit for a digital meter having a dual slope analog-to-digital convert |
December 1, 1981 |
| An offset circuit for use in providing an offset signal to an analog-to-digital converter. The analog-to-digital converter has an integrator for performing signal integrate operations and is connected to a digital display. The offset circuit is gated to provide a variable offset curr |
| 4302785 |
Method and apparatus for controlling tape recorder |
November 24, 1981 |
| Control apparatus for a tape recorder includes a Central Processor Unit (CPU) and a Control Panel having data entry switches, mode selection switches, speed selection switches, a multiposition function select switch and other controls and a display, all of which communicate with the CPU. |
| 4302784 |
Method and apparatus for controlling tape recorder |
November 24, 1981 |
| Control apparatus for a tape recorder includes a Central Processor Unit (CPU) and a Control Panel having data entry switches, mode selection switches, speed selection switches, a multiposition function select switch and other controls and a display, all of which communicate with the CPU. |
| 4300350 |
Bistable thermal actuator |
November 17, 1981 |
| A thermal actuator or heat motor employing end-to-end bimetal, bistable strip portions spanning a pair of supports but having a total length greater than the straight-line distance across the supports and capable, upon the selective application of heat to either portion to the exclusion |
| 4298906 |
Capacitor and element therefor |
November 3, 1981 |
| A capacitor which includes a case containing a capacitor element with a pair of unequal length overlapping tabs extending therefrom. A header for sealing the case carries a pair of leads. Each tab is welded to one of the leads with an insulator interposed between the tabs. |
| 4296462 |
Inverter controller |
October 20, 1981 |
| An inverter controller for controlling a three-phase inverter used for generation and subsequent injection of pulse code signals on power lines in a utility load management system is disclosed. The controller includes read-only-memory devices (208, 210) for generating address bus inf |
| 4291236 |
Remote receiver for load and rate control in a power transmission system |
September 22, 1981 |
| A remote receiver for decoding and responding to control pulses imposed on the power lines of a power transmission system. A large number of receivers can be connected to the power lines in, for example, a centralized load management system and can switch associated loads as commande |
| 4290023 |
Voltage offset circuit for auto-zero low voltage amplifier |
September 15, 1981 |
| A voltage offset circuit for use with an amplifier connected to receive low voltage signal inputs and operable for eliminating internal voltage offset errors of the amplifier as well as systemic voltage offsets. A variable voltage generating means is utilized to impress a voltage on an o |
| 4279513 |
Optical inspection system for large parts and for multiple measurements |
July 21, 1981 |
| An optical-electronic measurement system wherein only the images of workpiece edges from which measurements are to be taken are coupled to identifiable locations on the photocathode of a processor-controlled scanner by a plurality of flexible fiber optic bundles whose object ends are |
| 4276511 |
Magnetic systems for long scale electrical meter with multiple side coil sensing |
June 30, 1981 |
| A magnetic system for a long scale electrical meter enables four sided sensing of a coil which is completely offset from the axis of rotation has a cylindrical core pole piece magnetically coupled to first similar poles of two magnets. The core is surrounded by an inner annular air gap d |
| 4264960 |
System for controlling power distribution to customer loads |
April 28, 1981 |
| A method and apparatus which permits a power utility to have direct control of customers loads (CD) with a view toward facilitating enablement of a load management philosophy which includes peak shaving and load deferral. A master control station (MCS), which comprises a programmable |
| 4238731 |
Instrument moving element with severable bridge |
December 9, 1980 |
| An electric meter particularly characterized by a small number of moving parts and simplified assembly by virtue of fixed cooperating locating surfaces on the elements and sub-assemblies of the meter. A magnetic circuit including a yoke and magnet are constructed to snap into an insu |
| 4225257 |
Conductor arrangement and assembly method |
September 30, 1980 |
| An uninsulated contact array of resilient electrically conducting metal with bridging strips at each end to hold multiple conductors in predetermined spaced relation to each other. The bridging strips permit terminal tips at one end of the conductors to be stabbed into a circuit boar |
| 4218749 |
Apparatus and method for digital noise synthesis |
August 19, 1980 |
| The disclosure is directed to an apparatus and method for generating noise having characteristics of repeatability and reproducibility. A pseudo-random bit generator is responsive to clock pulses for simultaneously generating, at each clock pulse, a plurality of parallel pseudo-rando |
| 4218748 |
Apparatus and method for digitally obtaining signals having specified statistical distributions |
August 19, 1980 |
| The disclosure is directed to an improved apparatus and method for generating a specified statistical distribution. Digital bits having properties of randomness are produced. In response to a group of the digital bits, a signal is generated which approximates the specified statistica |
| 4217634 |
Voltage and current sources |
August 12, 1980 |
| A source for providing a voltage or current which is (remotely) controlled by a digital signal includes a digital-to-analogue converter (30) which supplies a proportion of a reference voltage (V.sub.R) in accordance with the digital signal. The gain of an amplifier (48, 50) receiving an |
| 4215427 |
Carrier tracking apparatus and method for a logging-while-drilling system |
July 29, 1980 |
| The disclosure is applicable for use in a logging-while-drilling apparatus for obtaining subsurface measurements during drilling in a fluid-filled borehole. Acoustic carrier waves are generated downhole in the borehole fluid and are PSK modulated in accordance with digital data represent |
| 4215425 |
Apparatus and method for filtering signals in a logging-while-drilling system |
July 29, 1980 |
| The disclosure is applicable for use in a logging-while-drilling apparatus for obtaining subsurface measurements during drilling in a fluid-filled borehole. Acoustic carrier waves are generated downhole in the borehole fluid and are PSK modulated in accordance with digital data represent |
| 4214284 |
Method and apparatus for controlling tape recorder |
July 22, 1980 |
| Control apparatus for a tape recorder includes a Central Processor Unit (CPU) and a Control Panel having data entry switches, mode selection switches, speed selection switches, a multiposition function select switch and other controls and a display, all of which communicate with the CPU. |
| 4211972 |
Self contained filar suspended meter rotor |
July 8, 1980 |
| A meter rotor includes a preferably hollow shaft for caging filaments or ribbons, means such as openings on the shaft for engaging a coil, a pair of axially movable end caps engaging opposing ends of the shaft, a spring associated with each end cap for holding the filaments or ribbons ta |
