Patents by Assignee Southern California Edison Company

Patent number: 4646003
Abstract: An apparatus and method for verifying the accuracy of watt-hour meters at their operational site includes applying a phantom load to the meter and to a watt transducer. The relative watt hour readings of the meter are compared to the watt hours computed from the power to the watt transducer and represented as a percentage error of the meter. The phantom load is constituted by a loading transformer with optional load adjustments to take into account different loads to the meter and there are also adjustment means to take into consideration different meter characteristics. The meter watt hour reading is determined from an articulated light generating and receiving means mounted in alignment with the revolving disc so that light passes through the aperture in the disc to the receiving means and then signals the verifying apparatus to give an indication of the watt hour reading of the meter. Alternatively the reading is obtained manually.
Type: Grant
Filed: January 18, 1985
Issued: February 24, 1987
Assignee: Southern California Edison Company, Inc.
Inventors: Charles E. Phillips, Alan M. Hood
Patent number: 4630220
Abstract: A control device for regulating the output voltage of a voltage regulator wherein the output from that regulator would normally be variable includes inputting that voltage to the control device. There are two overlapping bands which define an effective bandwidth between the upper limit of the lower band and lower limit of the upper band. The output of the device provides a signal responsively regulated in the effective bandwidth such that the output from the regulator can be similarly regulated. In power generation systems a narrow bandwidth can be effectively maintained to permit narrow variations of voltage. A micro-processor facilitates changing the regulated levels for the control device such that the output from the control device can be selectively and controllably changed as desired.
Type: Grant
Filed: March 6, 1984
Issued: December 16, 1986
Assignee: Southern California Edison Company
Inventor: Roger I. Peckinpaugh
Patent number: 4615530
Abstract: A siren comprises a compressed air supply which is deflected by stationary deflectors to exit radially through stator ports. A rotor with spaced ports rotates between the stator and deflector thereby opening and closing the stator ports. Stationary vanes are disposed at circumferentially spaced locations, and constitute together with the deflector plate and stator and rotor housing, plenums. There are fewer rotor ports than stator ports, which generates an out-of-phase acoustical pattern which creates an acoustic combination from the stator ports of an acoustic output at a distance from the siren which is more uniform spatially. The thermoplastic seal between the stator and the rotor has minimal clearance under operating conditions havign been run-in and plastically deformed at a temperature higher than for normal operation.
Type: Grant
Filed: August 16, 1985
Issued: October 7, 1986
Assignee: Southern California Edison Company, Inc.
Inventor: John G. Powell
Patent number: 4607217
Abstract: Subsynchronous resonance is detected in an electric a.c. power supply system by determining changes in wave parameters of substantially successive half cycles and applying said changes as a relationship of said subsynchronous resonance. The parameter change measured is the wave period, and changes in the ratio of the difference of the period of positive and period of negative half cycles over the sum of the period positive and the period of negative half cycles is related to detection of subsynchronous resonance.
Type: Grant
Filed: September 28, 1983
Issued: August 19, 1986
Assignee: Southern California Edison Company, Inc.
Inventor: Bharat Bhargava
Patent number: 4583043
Abstract: An electrical energy diversion measurement device includes a first clip-on transformer for location about the power cable at high elevation in the zone of the weather guard or at underground manhole location where power supply enters the consumer's dwelling. A second clip-on transformer is simultaneously located about a cable passing through the watt power meter housing supplying power to the consumer. A digital measurement means is responsive to the current sensed by either the current transformers or simultaneously by the transformers and digitally displays the current of each or the difference between the sensed current as a representation of current difference and energy diversion.
Type: Grant
Filed: February 25, 1983
Issued: April 15, 1986
Assignee: Southern California Edison Company, Inc.
Inventor: Charles E. Phillips
Patent number: 4558656
Abstract: A siren comprises a compressed air supply which is deflected by stationary deflectors to exit radially through stator ports. A rotor with spaced ports rotates between the stator and deflector thereby opening and closing the stator ports. Stationary vanes are disposed at circumferentially spaced locations, and constitute together with the deflector plate and stator and rotor housing, plenums. There are fewer rotor ports than stator ports, which generates an out-of-phase acoustical pattern which creates an acoustic combination from the stator ports of an acoustic output at a distance from the siren which is more uniform spatially. The thermoplastic seal between the stator and the rotor has minimal clearance under operating conditions having been run-in and plastically deformed at a temperature higher than for normal operation.
Type: Grant
Filed: March 31, 1983
Issued: December 17, 1985
Assignee: Southern California Edison Company, Inc.
Inventor: John G. Powell
Patent number: 4460945
Abstract: A luminaire shield, particularly for protecting street lights from breakage by vandals includes a laminate plate mounted in spaced relationship from the lens of the luminaire. Heat can thereby escape between an air gap and between the light source housing and the shield, and the shield extends beyond the lens with a tail portion covering the electrical converter (ballast) mounted within the luminaire housing, such that this is also protected.
Type: Grant
Filed: September 30, 1982
Issued: July 17, 1984
Assignee: Southern California Edison Company, Inc.
Inventors: Alexius C. Chan, Phillip L. Wheeler, Lloyd H. Chandler
Patent number: 4456832
Abstract: An energy-efficient device for managing residential loads on electrical generating systems is disclosed. The device is suitable for installation in existing circuit breaker load center panels at low labor costs, to be signalled from Load Management System(s), of various types. The device of the present invention causes the circuit breaker to disconnect and reconnect thereby controlling power consumption during peak periods of energy use. Various alternative embodiments are also disclosed.
Type: Grant
Filed: August 14, 1980
Issued: June 26, 1984
Assignee: Southern California Edison Company
Inventors: Richard H. Greer, James B. Newport
Patent number: 4406984
Abstract: A device for detecting current imbalance between phases of a polyphase alternating current generator. A detector responds to the maximum peak current in the generator, and detecting means generates an output for each phase proportional to the peak current of each phase. Comparing means generates an output when the maximum peak current exceeds the phase peak current.
Type: Grant
Filed: April 9, 1982
Issued: September 27, 1983
Assignee: Southern California Edison Company
Inventor: Robert F. Karlicek
Patent number: 4386887
Abstract: An improved blade rotor structure for an axial flow turbine substantially reduces vibratory stress at resonant frequencies by rigidly connecting the blades to each other in groups equal in number to an integer multiple of the resonant frequency of the blades (i.e. a harmonic frequency) divided by the rotor running speed. Flexible tie means are used for connecting adjacent groups of blades together for substantially reducing axial-torsional vibration of the blades.
Type: Grant
Filed: June 30, 1980
Issued: June 7, 1983
Assignee: Southern California Edison Company
Inventor: Ralph J. Ortolano
Patent number: 4346345
Abstract: A theft resisting device for use as part of an electric watthour meter includes a moveable slide bar positioned in a housing within the base plate of the meter. The slide bar is normally retracted, but when unauthorized removal of the meter from its socket occurs, the bar extends thereby preventing reinstallation of the meter in the socket in any position. Locking means engages the slide bar to prevent retraction of the bar. An access aperture to the housing permits a tool to be inserted to reset the locking means and permit slide bar retraction.
Type: Grant
Filed: April 25, 1980
Issued: August 24, 1982
Assignee: Southern California Edison Company
Inventor: Ronald C. Welz
Patent number: 4327324
Abstract: 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 the meter is inverted for preventing deregistration of consumed energy. Latching means can lock the element in a position showing that the meter had been inverted.
Type: Grant
Filed: May 6, 1980
Issued: April 27, 1982
Assignee: Southern California Edison Company
Inventor: Ronald C. Welz
Patent number: 4183908
Abstract: By the process of the invention a unique crystalline calcium sulfate dihydrate product is precipitated from an aqueous solution of calcium sulfate and a combination of molecularly dehydrated inorganic phosphates. Also within the scope of the invention is a wallboard manufacturing process and a gypsum wallboard which comprises the gypsum of the invention.
Type: Grant
Filed: June 24, 1977
Issued: January 15, 1980
Assignee: Southern California Edison Company
Inventor: Richard B. Rolfe
Patent number: 4135385
Abstract: A method for determining the location of underwater pipeline leaks comprising first measuring the resulting pressure within the pipeline, calculating depth of pipeline at the site of the leak and then determining the location of the leak by reference to a graph of the profile of the pipeline which plots the depth of the pipeline against the distance of the pipeline from shore.
Type: Grant
Filed: August 26, 1976
Issued: January 23, 1979
Assignee: Southern California Edison Company
Inventor: John H. Watkins
Patent number: 4126529
Abstract: An apparatus and method for removing oxides of nitrogen and sulfur from flue gases. The apparatus comprises an enclosure wherein the flue gases are washed with a scrubbing solution, preferably containing ferrous chelates and sulfite ions, and an electrochemical cell for regenerating the spent scrubbing solution. The electrochemical cell preferably comprises a plurality of cathode and anode compartments separated by ion transfer membranes. The spent scrubbing solution is regenerated by passing the solution through the cathode compartments of the electrochemical cell. The regeneration process involves the removal of the sulfate ions from the scrubbing solutions through the ion transfer membranes and the reduction of the nonreactive ferric chelate to the reactive ferrous chelate.
Type: Grant
Filed: August 5, 1977
Issued: November 21, 1978
Assignee: Southern California Edison Company
Inventor: David W. DeBerry
Patent number: 4095928
Abstract: A process for the simultaneous combustion of nitrogen-rich fuels and nitrogen-poor fuels which results in the production of less nitrogen oxide emissions.
Type: Grant
Filed: February 14, 1977
Issued: June 20, 1978
Assignee: Southern California Edison Company
Inventors: Dale A. Jones, Mansour N. Mansour
Patent number: 4064048
Abstract: An improved water intake system with fish control means includes a watercourse through which water is drawn from a body of water containing fish and debris, a fish diversion structure mounted across the watercourse for diverting fish unavoidably sucked therein and fish removal means located at one end of the fish diversion structure for removing the diverted fish from the water in the watercourse for return to the body of water.
Type: Grant
Filed: January 23, 1974
Issued: December 20, 1977
Assignee: Southern California Edison Company
Inventors: Dallas I. Downs, Lory E. Larson, Victor J. Schuler
Patent number: 3944846
Abstract: A relay for detecting sustained subsynchronous current on a power system. The relay includes a filter network for separating subsynchronous current from synchronous current and a detector network for measuring the detected subsynchronous current.
Type: Grant
Filed: March 19, 1974
Issued: March 16, 1976
Assignee: Southern California Edison Company
Inventors: Maxwell A. Thompson, Tak S. Ning
Patent number: 3938340
Abstract: A fish holding chamber for use with a water intake system which includes a watercourse through which water is drawn from a body of water containing fish and debris and a fish diversion or debris removal structure mounted across the watercourse, the fish holding chamber being located at one end of the diversion or removal structure for receiving and maintaining fish diverted from the water in the watercourse for return to the body of water.
Type: Grant
Filed: January 23, 1974
Issued: February 17, 1976
Assignee: Southern California Edison Company
Inventor: Dallas I. Downs