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| Number | Title | Issue Date |
| 5058762 | Shipping device for heater unit assembly A shipping device for a heater unit assembly (23), the heater unit assembly (23) including a cylindrical wall (25) and a top plate (31) secured to the cylindrical wall (25) and having a flange portion which projects radially beyond the outer surface of th... | 10/22/1991 |
| 5049353 | Passive containment cooling system A containment cooling system utilizes a naturally induced air flow and a gravity flow of water over the containment shell which encloses a reactor core to cool reactor core decay heat in two stages. When core decay heat is greatest, the water and air flow... | 09/17/1991 |
| 5040287 | Heating equipment installation system A method for installing a heater unit assembly (52, 54) in a reactor pressure vessel (2) for performance of an annealing treatment on the vessel (2), the vessel (2) having a vertical axis, being open at the top, being provided at the top with a flange (6)... | 08/20/1991 |
| 5015959 | Sense wire signal enhancements for insulation defect detection A device for monitoring an electrical cable comprising a conductor surrounded by insulation to locate insulation defects while a signal is impressed on the conductor, the device including an ion generator for creating an ionized atmosphere to envelop the ... | 05/14/1991 |
| 5011650 | Nuclear power generating station equipment qualification apparatus Apparatus for monitoring an object piece of qualified equipment in a nuclear power plant includes passive means for detecting a total integrated dose of radiation received by the object piece, means for determining a thermal history of the object piece, a... | 04/30/1991 |
| 5011821 | Method and apparatus for generating electricity An electric power generating device includes a bundle of conductors which are placed in a magnetic field generated by north and south pole pieces of a permanent magnet. The magnetic field is shifted back and forth through the bundle of conductors by a pai... | 04/30/1991 |
| 4996951 | Method for soot blowing automation/optimization in boiler operation A system and method for controlling soot removal in a heating device (2) in which heat energy is generated by combustion of a fuel, with accompanying production of soot, to produce combustion product gases, and heat energy is transferred from the product ... | 03/05/1991 |
| 4983351 | Top head penetration, hydro-ball in-core instrumentation system A hydro-ball in-core instrumentation system employs detector strings each comprising a wire having radiation sensitive balls affixed diametrically at spaced positions therealong and opposite tip ends of which are transportable by fluid drag through interi... | 01/08/1991 |
| 4980118 | Nuclear power generating station equipment qualification method and apparatus Apparatus for monitoring an object piece of qualified equipment in a nuclear power plant includes first passive means for memicking the effect of radiation received by the object piece, second means for mimicking hte effect of a thermal history of the obj... | 12/25/1990 |
| 4974379 | Textural break foundation wall construction modules Below-grade, textural-break foundation wall structures are provided for inhibiting diffusion and advection of liquids and gases into and out from a surrounding hydrogeologic environment. The foundation wall structure includes a foundation wall having an i... | 12/04/1990 |
| 4961898 | Reactor internals and core support monitoring system A nuclear reactor monitoring system includes incore and excore neutron detectors for producing neutron noise signals and system data including at least one of reactor coolant pump motor current, temperature and pressure of the reactor coolant system and p... | 10/09/1990 |
| 4957694 | Removal of obstructions in thimbles of nuclear power reactors In the operation of a power reactor having a pressure bessel (2) containing a core and a plurality of thimbles extending into the core to provide passages for a flux detector, a movable support member (12) located outside of the pressure vessel (2) and ca... | 09/18/1990 |
| 4950957 | Extended ion sources and method for using them in an insulation defect detector A method of detecting insulation defects in a wire using an extended ion source wherein ions are generated along the entire length of the extended ion source and flow toward an insulated cable located in close proximity thereto. If there are defects in th... | 08/21/1990 |
| 4950447 | Snubber monitoring system for nuclear power plants A snubber monitoring system is provided for a nuclear power plant wherein the snubbers are disposed at various locations within a plant containment structure to support piping and equipment rigidly against seismic and vibratory loading while permitting th... | 08/21/1990 |
| 4935195 | Corrosion-erosion trend monitoring and diagnostic system A system for analyzing containment integrity of a containment system includes data storage for inspection data and characteristic data and a data evaluation processor for evaluating the inspection data. A data acquisition system is used for periodically o... | 06/19/1990 |
| 4894849 | Apparatus and method for transferring nuclear reactor fuel assemblies A system for transferring fuel assemblies in a nuclear reactor includes a load control system which compares the current load to the more restrictive of fixed overload and underload limits, and instantaneous overload and underload limits continuously calc... | 01/16/1990 |
| 4845940 | Low NOx rich-lean combustor especially useful in gas turbines A combustor capable of reducing the noxious emissions such as fuel bound and thermal nitrogen oxide products, during combustion of high nitrogen bearing and high aromatic content fuels is disclosed. The combustor includes a plurality of substantially conc... | 07/11/1989 |
| 4787208 | Low-nox, rich-lean combustor A low-NOx combustor is provided with a rich, primary burn zone and a lean, secondary burn zone. NOx formation is inhibited in the rich burn zone by an oxygen deficiency and in the lean burn zone by a low combustion reaction temperatu... | 11/29/1988 |
| 4775930 | Electronic key check for ensuring proper cradles insertion by respective processing board Keying check apparatus is provided for a control system including at least two microprocessor cradles, with each microprocessor cradle having a unique control program, and which keying check apparatus determines through operation with one of a first and s... | 10/04/1988 |
| 4774669 | Train control having a supervisory monitor providing improved operating safety and better maintenance support A train control and monitoring system detects operating errors in controlled devices in each car and disables a car propulsion system if an error is detected. Operator reset is employed to reactivate a car, but operator reset control is disabled if a limi... | 09/27/1988 |
| 4735463 | Transit vehicle friction brake deceleration control system An improved friction brake system for a transit vehicle is disclosed. The conventional friction brake system for a transit vehicle utilizes an integral service brake and emergency-parking brake actuator. The service brake portion is air powered while the ... | 04/05/1988 |
| 4710880 | Vehicle speed control apparatus and method A passenger vehicle is provided for movement along a track having an input speed command including ONE and ZERO information components to control the vehicle speed. A first control apparatus including at least a first microprocessor is responsive to the O... | 12/01/1987 |
| 4697124 | Integral series parallel and power brake controller for a transit vehicle An integral series parallel changeover and power dynamic brake controller apparatus for a transit vehicle disclosed. The controller utilizes a single cam shaft to operate switches for the series parallel function and the power brake function. The apparatu... | 09/29/1987 |
| 4648799 | Cooled combustion turbine blade with retrofit blade seal The invention comprises a retrofit turbine blade cooling apparatus for replacing non-cooled turbine blades in presently existing combustion turbines. The cooling apparatus comprises a turbine blade structured for fluid cooling and a sealing apparatus stru... | 03/10/1987 |
| 4625279 | Vehicle speed control apparatus and method A passenger vehicle speed control apparatus and method are operative with a track providing an input speed command having ONEs and ZEROs information components. At least two programmed microprocessors operate with the vehicle and redundantly decode the ON... | 11/25/1986 |
| 4623269 | Wheel bearing protection apparatus The rotatable guide wheel of a transit vehicle is supported by a vertical stationary shaft by at least one main support bearing. Upon failure of that main support bearing the guide wheel shifts position for operation with one of a sleeve bearing coupled w... | 11/18/1986 |
| 4620143 | Digital pulse width modulation motor control system An adjustable frequency AC motor drive control system includes pulse width modulation control of an inverter coupled with the motor and a programmed microprocessor which generates a cosine wave in cooperation with a sine wave and a carrier wave to provide... | 10/28/1986 |
| 4611153 | Chopper frequency determination apparatus A microprocessor controlled propulsion motor control apparatus for a passenger vehicle is provided, including a chopper apparatus having an interrupt clock to determine the frequency cycle of operation of that chopper apparatus. It is required that this f... | 09/09/1986 |
| 4606701 | Tip structure for a cooled turbine rotor blade The invention comprises a cooled turbine rotor blade having an improved blade tip structure. A groove is provided in the trailing edge end of the blade tip on those turbine blades whose trailing edge is too thin to support an extension of the blade walls ... | 08/19/1986 |
| 4591413 | Multistage flash evaporator providing isolation of impure stage distillate flows from the main duct distillate flow A conventional cross-flow or paired-stage multi-stage flash evaporator plant is provided with duct means for collecting distillate from collection trays in the successive evaporator units in the plant. Distillate from individual units is diverted to a byp... | 05/27/1986 |
| 4539918 | Multiannular swirl combustor providing particulate separation A multi-annular swirl burner includes a plurality of overlapping tubular wall members which form a rich combustion zone and a lean combustion zone with a throat section therebetween. Annular passages are located between adjacent wall members, and vanes lo... | 09/10/1985 |
| 4536126 | System and method employing a digital computer for automatically synchronizing a gas turbine or other electric power plant generator with a power system A gas turbine power plant is provided with an industrial gas turbine which drives a rotating brushless exciter generator coupled to a power system through a breaker. One or more of the turbine-generator plants are operated by a hybrid digital computer con... | 08/20/1985 |
| 4533997 | Computer monitored or controlled system which may be modified and de-bugged on-line by one not skilled in computer programming A computer monitored or controlled system is equipped with an interactive debugging system which enables a systems engineer to modify the system configuration in a simple manner. At any time, the systems engineer may obtain from the system a complete, und... | 08/06/1985 |
| 4527397 | Turbine combustor having enhanced wall cooling for longer combustor life at high combustor outlet gas temperatures A combustor for a stationary combustor turbine is provided with a generally tubular sidewall formed from a telescopic arrangement of sidewall ring members. A corrugated spacer band supports the upstream end portion of each sidewall member on the downstrea... | 07/09/1985 |
| 4521844 | Manipulator control system and apparatus for decontaminating nuclear steam generators A manipulator control system uses a microprocessor to compute appropriate control parameters in order to maintain constant tangential velocity of a spray nozzle in relation to the inside surface of a spherical portion of a nuclear steam generator. The mic... | 06/04/1985 |
| 4480930 | Pulse cooled thermocouple system for high temperature measurement especially in combustion turbines A pulsed coolant thermocouple temperature measuring system is arranged to measure temperature above a limit operating temperature of the thermocouple includes a rake which is disposed across a hot gas path combustion turbine. Multiple thermocouple are dis... | 11/06/1984 |
| 4476674 | Power generating plant employing a reheat pressurized fluidized bed combustor system A reheat pressurized fluidized bed combustor system for an electric power plant includes an HP turbine which drives a compressor. Compressed clean air is directed through a combustor bed heat exchanger where it is heated to 1500° F. and then directed to ... | 10/16/1984 |
| 4475344 | Low smoke combustor for land based combustion turbines An improved combustor basket for a land-based combustion turbine comprises a plurality of ring segments joined in telescoping fashion to form a constant diameter basket, the downstream end of each ring segment having an extended lip for improved film cool... | 10/09/1984 |
| 4470257 | Isochronous and droop speed control for a combustion turbine A speed and load control for a combustion turbine utilized in the generation of electric power includes means for effecting a smooth transition between the isochronous and droop modes of control. The speed and load control also includes means for maintain... | 09/11/1984 |
| 4455614 | Gas turbine and steam turbine combined cycle electric power generating plant having a coordinated and hybridized control system and an improved factory based method for making and testing combined cycle and other power plants and control systems therefor A combined cycle electric power plant includes in interconnected relationship a steam turbine, two gas turbines, three electric generators, two heat recovery steam generators, a hybrid computer control system, a plant protection system and various items o... | 06/19/1984 |
