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| Number | Title | Issue Date |
| 5259446 | Pressure pulse cleaning for adsorption tower distributors An on-line method and apparatus for dislodging deposits from the distributors (12) in an adsorption tower (10) thereby cleaning the tower (10) by causing a surge in a fluid to dislodge the blocked openings (14) of the distributors (12).... | 11/09/1993 |
| 5258614 | Optical fiber loop temperature sensor A fiber optic loop temperature sensor employs a fiber optic loop (90) having a predetermined fixed radius where a light source (96) supplies light to the signal optical fiber (92) with the loop and a second reference optical fiber (100) receives light fro... | 11/02/1993 |
| 5252491 | Aqueous carbon dioxide monitor An apparatus and method for the measurement of low levels of carbon dioxide in a sample employing membrane separation and ion-exchange technology. The difference in acid strength of carbonic acid and other acids is exploited by treating the sample with a ... | 10/12/1993 |
| 5244515 | Heat treatment of Alloy 718 for improved stress corrosion cracking resistance A method of increasing intergranular stress corrosion cracking resistance of Alloy 718 in water reactor environments is described where the alloy is heat treated at a high solution annealing temperature to dissolve grain boundary precipitates formed durin... | 09/14/1993 |
| 5243862 | Confirmation of hydrogen damage in boiler tubes by refracted shear waves A method and apparatus for distinguishing between hydrogen damage in the wall of a boiler tube, and surface damage on the inside surface of the tube, comprises a pair of transducers which are spaced on the outer surface of the tube and which apply a refra... | 09/14/1993 |
| 5240168 | Method for making a composite to carbon steel joint An improved method for making a composite tube (10) to a carbon steel tube (16) joint or a composite tube (10) to a carbon steel header (50) joint is achieved by specially preparing the composite tube (10) by removing the cladding (12) from one end (24) t... | 08/31/1993 |
| 5226730 | Internal temperature monitor for work pieces A method and apparatus for measuring the internal temperature of a work piece comprises an excitation laser for generating laser pulses which are directed through a water cooled probe, and in an optical fiber, to a first surface of the work piece. The las... | 07/13/1993 |
| 5225654 | Method for defect free keyhole plasma arc welding A plasma arc welding process for welding metal of increased thickness with one pass includes operating the plasma arc welding apparatus at a selected plasma gas flow rate, travel speed and arc current, to form a weld having a penetration ratio to weld hei... | 07/06/1993 |
| 5225883 | Video temperature monitor An apparatus and method for providing a real-time video display and a temperature map display of an object, in particular a flame, comprises a single CCD video camera and optical equipment which focuses separate light bundles onto a photosensitive surface... | 07/06/1993 |
| 5223918 | Fiber optic color balance monitor A fiber optic apparatus and method for monitoring color balance of a product that can consist of a complex two dimensional color pattern. This system employs at least one illuminating optical fiber (18) and at least two pick-up optical fibers (16). Filter... | 06/29/1993 |
| 5221045 | Bulge formed cooling channels with a variable lead helix on a hollow body of revolution A method of constructing a nozzle having cooling channels comprises a shell and a liner which are formed into a body of revolution having an axis of revolution. Helical welds are formed to hold the liner and shell to each other with a channel position bei... | 06/22/1993 |
| 5220172 | Fluorescence analyzer for lignin A method and appartus for measuring lignin concentration in an undiluted sample of wood pulp or black liquor comprises a light emitting arrangement for emitting an excitation light through optical fiber bundles into a probe which has a sensing end facing ... | 06/15/1993 |
| 5209915 | Method for flyash recycling in a dry SO2 scrubber A method of removing sulphur oxides from flue gases comprises atomizing a wet alkali slurry into a slurry spray. A pneumatically conveyed dry reactive recycled flyash is supplied in an annular pattern around the slurry spray to efficiently utilize the fly... | 05/11/1993 |
| 5208071 | Method for aluminizing a ferritic workpiece by coating it with an aqueous alumina slurry, adding a halide activator, and heating An improved method for aluminizing a ferritic material by forming an aqueous aluminum slurry composition, applying the aqueous aluminum slurry composition to the ferritic material to form a coating, adding a halide activator to the coated ferritic materia... | 05/04/1993 |
| 5206711 | Fluid opacity sensor A fiber optic fluid opacity sensor includes a light source (12) transmitting light to dividing means (14) for providing a sample light signal (18) and a reference light signal (20) to dual photodetectors (26, 28). Sample and reference optical pathways (19... | 04/27/1993 |
| 5194076 | Low pressure drop dry scrubber A vertical, co-current dry scrubber comprises a housing having a waste gas inlet and a treated gas outlet. A plurality of airfoil mounted atomizers extend across the interior of the housing for discharging slurry into the gas stream for treatment of the g... | 03/16/1993 |
| 5193402 | Leadwire attachment technique for manufacturing a thin film sensor and a sensor made by that technique A method for manufacturing a sensor with an attached leadwire (10) fastened to an adaptor block (18) which is attached to a gage shim (24). The sensor is deposited on an insulated layer (28) placed on the gage shim (24) in electrical contact with the elec... | 03/16/1993 |
| 5183989 | Reduced heat input keyhole welding through improved joint design An improved high energy density welding method for reducing input keyhole welding prepares the weld joint (8) between two edges (10, 14) of at least one member by separating the edges (10, 14) of the member (12, 16) with a controllable gap (22) by a proje... | 02/02/1993 |
| 5176088 | Furnace ammonia and limestone injection with dry scrubbing for improved simultaneous SOX and NOX removal A process and apparatus for simultaneously removing NOX and SOX from the exhaust of a furnace includes an injection of limestone into a region of the furnace having a temperature of about 2,000°-2,400° F., and an injection of ammon... | 01/05/1993 |
| 5171694 | Method for monitoring aqueous carbon dioxide An apparatus and method for the measurement of low levels of carbon dioxide in a sample employing membrane separation and ion-exchange technology. The difference in acid strength of carbonic acid and other acids is exploited by first treating the sample w... | 12/15/1992 |
| 5167931 | SO2 control using moving granular beds A method and apparatus of scrubbing acid gas from flue gas comprises slats which define a moving bed of scrubbing material which is capable of reacting with the acid gas to form reaction products on particles of the scrubbing material. Flue gas from a boi... | 12/01/1992 |
| 5168065 | Forced oxidation monitoring and control system A method and apparatus for operating a limestone wet scrubbing flue gas desulfurization apparatus comprises first and second pH measuring devices connected respectively to a recirculation line in the scrubber and above the liquid holdup tray in the scrubb... | 12/01/1992 |
| 5164605 | Fiber optic displacement sensor using fiber optic coil A fiber optic microbend sensor employs a resilient coil (12) with an optical fiber (10) positioned therein. The coil (12) has a predetermined length and pitch. An optical signal is applied to the optical fiber (10) with the coil (12) interrogating a param... | 11/17/1992 |
| 5163620 | Nozzle for superconducting fiber production A nozzle apparatus for producing flexible fibers of superconducting material receives melted material from a crucible for containing a charge of the superconducting material. The material is melted in the crucible and falls in a stream through a bottom ho... | 11/17/1992 |
| 5156802 | Inspection of fuel particles with acoustics An apparatus and method are disclosed for determining the integrity of coated fuel particles via acoustic characterization. Particle supply means (4) drops the nuclear fuel particles (2) individually onto the face (6) of a transducer (8). The generated si... | 10/20/1992 |
| 5155358 | Double wall camera housing with thermostatic cooler A double wall housing for a camera contains a thermostatic switch which senses elevated temperature within the housing to activate a compressed air powered vortex tube which is capable of producing cool air. The cool air is supplied to a helical path betw... | 10/13/1992 |
| 5144125 | Fiber optic based fire detection and tracking system An apparatus and method is disclosed for a fiber optic based fire detection and tracking system. An optical time domain reflectometer (OTDR) interrogates at least one optical fiber with a melting point defining a threshold temperature for fire detection. ... | 09/01/1992 |
| 5138765 | Method of making an enhanced hydraulically expanded heat exchanger A method for manufacturing a ribbed flow channel (38) results in enhancing the heat transfer performance of a hydraulically expanded heat exchanger such as a coiled tube boiler (10). The ribs are machined or rolled into a flat metal sheet (20) prior to fo... | 08/18/1992 |
| 5134876 | Acoustic emission leak simulator An acoustic emission leak simulator (10) for a nondestructive simulation of a leak in a structure employs a fluid supply with variable orifice (18) for controllably releasing the fluid to create a simulated leak source (20). An acoustic waveguide (22) aco... | 08/04/1992 |
| 5135777 | Method for diffusion coating a workpiece with Cr, Si, Al or B by placing coated ceramic alumino-silicate fibers next to the workpiece and heating to diffuse the diffusion coating into the workpiece A method for diffusion coating a workpiece with chromium (Cr), silicon (Si), aluminum (Al), or boron (B) by placing coated ceramic alumino-silicate fibers next to the workpiece and heating to diffuse the diffusion coating into the workpiece. A ceramic car... | 08/04/1992 |
| 5129583 | Low pressure loss/reduced deposition atomizer An atomizer for discharging a jet of one fluid in another fluid, comprises a nozzle head having at least one nozzle hole therein for discharging the jet. The nozzle hole has an inwardly tapering inlet end and an outwardly tapering outlet end for reducing ... | 07/14/1992 |
| 5125272 | Ultrasonic crack sizing method An ultrasonic tip diffraction technique for determining the depth of a surface-opening crack is disclosed. Longitudinal ultrasonic waves are transmitted parallel to and along the crack and measurement of the time of travel of the waves diffracted at the t... | 06/30/1992 |
| 5125252 | Variable geometry tube bending dies An improved variable geometry tooling die is disclosed employing die segments 12 for use in die-press bending of materials. A forming die 10 is constructed of a plurality of segmented portions 12 which are radially adjustable for bends of different radii.... | 06/30/1992 |
| 5119676 | Ultrasonic method and apparatus for determining water level in a closed vessel An ultrasonic method and apparatus for measuring liquid level in a vessel employing an acoustic waveguide (16) connected to an ultrasonic transducer (14) and the vessel (18). Guiding means (24) situated inside a vessel (18) directs the acoustic energy pul... | 06/09/1992 |
| 5114665 | Autonormalizing reactimeter A method of measuring reactivity of a nuclear reactor includes automatic normalization. Normalization is achieved by determining the ratio of a linear amplifier used to form an analog detection signal, before and after a range change has taken place. A no... | 05/19/1992 |
| 5110365 | Control of furnace cleaning for reflective ash using infrared imaging A method and apparatus for monitoring reflective ash deposited on a furnace wall to be cleaned, comprises an infrared video camera or other mechanism for taking an infrared image of the furnace wall. The image must include an area to be cleaned by the wat... | 05/05/1992 |
| 5096502 | Advanced water lance control system based on peak furnace wall emissivity A method and apparatus for controlling the operation of a water lance for water cleaning a furnace wall comprises a sensor or calculation equipment to derive the furnace wall emissivity and equipment that compares the emissivity to a programmed low setpoi... | 03/17/1992 |
| 5094695 | Furnace cleanliness monitor for high reflectivity ash A method and apparatus of initiating and terminating the cleaning of a furnace wall to remove reflective ash which been deposited thereon, comprises a video or infrared monitor which monitors the light being reflected from the furnace wall or the ratio of... | 03/10/1992 |
| 5092278 | Non-welded attachment tube support lug casting A support lug casting for supporting a ferritic tube from an adjacent tube comprising male and female lugs formed on a ring shaped member and engaged around but not welded to each tube. The male lug of one tube engages into the female lug of an adjacent t... | 03/03/1992 |
| 5092176 | Method for determining deposit buildup A method of determining low density deposits on the inner surface of a boiler tube comprises the generation of ultrasonic energy which is directed from the outer surface of the tube to the inner surface of the tube. The energy is reflected back and forth ... | 03/03/1992 |
