Abrégé

A power operated rotary knife including an annular rotary knife blade supported for rotation in a blade housing. The rotary knife blade including a body and a blade section extending from the body. The body section including an outer wall including an upper, middle and lower portions. The upper portion of the outer wall including a bearing race extending radially inwardly into the outer wall. The lower portion of the outer wall including the driven gear. In one embodiment, the intermediate portion includes an annular land having an outer surface defining a radially outermost portion of the outer wall of the body, the outer surface of the annular land being radially outward of the driven gear and the bearing race. In another embodiment, the intermediate portion includes an annular channel having an inner surface being radially inward of first and second ends of the bearing race and the driven gear.

Classes IPC  ?

• B26B 25/00 - Outils coupants à main comportant des lames en forme de disques, p. ex. entraînées par un moteur
• A22C 17/04 - Dispositifs de nettoyage des os

Abrégé

A computer with a proper program generates a phased array sequence of signals. In a pulser with delays, the signals are fed through a multiplexor into multiple water wedges that are attached to a globe valve being tested. For a sequential operation of the globe valves from the open to the closed position, ultrasonic signals are transmitted through the fluid contained in the valve and reflected back through piezo-electric crystals to the multiplexor. By summation and merger of the signals, an image can be developed of the operation of the globe valve to determine if the globe valve is operating properly. By comparing the signals received with a known standard for that globe valve, proper operation, or lack thereof, of the globe valve under test can be determined. Separation of the valve stem from the globe can also be measured.

Classes IPC  ?

• F16K 15/03 - Soupapes, clapets ou valves de retenue à corps de soupapes rigides guidés et élément de fermeture à charnière
• G01N 29/06 - Visualisation de l'intérieur, p. ex. microscopie acoustique
• G01N 29/11 - Analyse de solides en mesurant l'atténuation des ondes acoustiques
• G01N 29/24 - Sondes
• G01N 29/34 - Génération des ondes ultrasonores, sonores ou infrasonores
• G01N 29/44 - Traitement du signal de réponse détecté
• F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme
• G01N 29/26 - Dispositions pour l'orientation ou le balayage

Abrégé

A digital radiographic tool with drive car for moving along track sections attached longitudinally to a pipe is shown. The drive car carries (1) a collimator on one side of the pipe for projecting x-rays or gamma rays on said pipe and (2) a linear digital array on an opposing side of the pipe for collecting x-rays or gamma rays that have passed through the pipe. The collected rays are processed to indicate any defects in the pipe. The digital radiographic tool is adjustable to allow inspection of pipes that have obstructions adjacent thereto.

Classes IPC  ?

• G01N 23/02 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau
• G01N 23/18 - Recherche de la présence de défauts ou de matériaux étrangers
• G21K 1/02 - Dispositions pour manipuler des particules ou des rayonnements ionisants, p. ex. pour focaliser ou pour modérer utilisant des diaphragmes, des collimateurs

Abrégé

A computer with a proper program generates a phased array sequence of signals. In a pulser with delays, the signals are fed through a multiplexor into multiple water wedges that are attached to a lift-type check valve being tested. For a sequential operation of the lift-type check valves from the open to the closed position, ultrasonic signals are transmitted through the fluid contained in the valve and reflected back through piezo-electric crystals to the multiplexor. By summation and merger of the signals, an image can be developed of the operation of the lift-type check valve to determine if the lift-type check valve is operating properly. By comparing the signals received with a known standard for that lift-type check valve, proper operation, or lack thereof, of the lift-type check valve under test can be determined.

Classes IPC  ?

• G01N 29/26 - Dispositions pour l'orientation ou le balayage
• G01N 29/34 - Génération des ondes ultrasonores, sonores ou infrasonores
• G01N 29/24 - Sondes
• G01N 29/44 - Traitement du signal de réponse détecté
• G01N 29/06 - Visualisation de l'intérieur, p. ex. microscopie acoustique
• G01N 29/11 - Analyse de solides en mesurant l'atténuation des ondes acoustiques
• F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme

Abrégé

A computer with a proper program generates a phased array sequence of signals. In a pulser with delays, the signals are fed through a multiplexor into multiple water wedges that are attached to a valve being tested. For a sequential operation of the valves from the open to the closed position, ultrasonic signals are transmitted through the fluid contained in the valve and reflected back through piezo-electric crystals to the multiplexor. By summation and merger of the signals, an image can be developed of the operation of the valve to determine if the valve is operating properly. By comparing the signals received with a known standard for that type valve, proper operation, or lack thereof, of the valve under test can be determined.

Classes IPC  ?

• G01N 29/44 - Traitement du signal de réponse détecté
• G01N 29/34 - Génération des ondes ultrasonores, sonores ou infrasonores
• G01N 29/24 - Sondes
• G01N 29/26 - Dispositions pour l'orientation ou le balayage

Abrégé

An apparatus and method for maintaining contact between a pod of transducers and an inner surface of a reactor pressure vessel filled with water of a nuclear power plant is described. An underwater carriage carries the pod of transducers each of which is independently movable and are constantly urged against the surface of the vessel during inspection. Each transducer is independently pivotable about two axes. Each transducer emits and receives signals to detect any flaws of potential problems in the reactor pressure vessel.

Classes IPC  ?

• G21C 7/00 - Commande de la réaction nucléaire
• G21C 17/01 - Inspection des surfaces internes des enceintes
• G21C 17/013 - Véhicules d'inspection

Abrégé

A method and apparatus for inspecting the upper portion of a core shroud of a nuclear power plant is provided. The upper shroud scanner mounts on an arcuic section of a steam dam of the core shroud and moves back and forth there along. A vertical arm with transducers thereon extend down from a Y-car portion of the upper shroud scanner. Transducers adjacent the core shroud emit and receive an ultrasonic sound to inspect for flaws and defects in the core shroud.

Classes IPC  ?

• G21C 17/007 - Inspection des surfaces externes des enceintes

Abrégé

A device is provided to inspect welds in nozzles located in water within a containment vessel of a nuclear power plant. A computer connected to the device controls movement by use of thrusters located along a main rail while buoyancy packs regulate the depth. After the device is navigated to a weld needing inspection, feet extend radially outward from the main rail to secure the device in the nozzle. Then transducer clusters are moved along the main rail to be radially inside the weld to be inspected. Thereafter, the transducer clusters are extended radially outward and rotated adjacent to the weld while simultaneously emitting test signals and receiving reflected signals to indicate the condition of the weld.

Classes IPC  ?

• G21C 17/00 - SurveillanceTests
• G21C 17/01 - Inspection des surfaces internes des enceintes
• G21C 17/013 - Véhicules d'inspection
• G21C 17/017 - Inspection ou maintenance de tuyaux ou de tubes dans des installations nucléaires

Abrégé

Computers with proper programs generate signals in phased array sequence. In pulsers with delays, signals are fed through a multiplexor into multiple water wedges that are attached to a valve being tested. For a sequential operation of the valves from the open to the closed position, ultrasonic signals are transmitted through fluid contained in the valve and reflected back through piezo-electric crystals to the multiplexor. By summation and merger of the signals, an image can be developed of the operation of the valve to determine if the valve is operating properly. By using multiple water wedges and pass visualization software, the operator can see exactly how the valve is functioning, which information can be stored for inspections or maintenance.

Classes IPC  ?

• G01N 29/04 - Analyse de solides
• G01N 29/26 - Dispositions pour l'orientation ou le balayage

Abrégé

A computer with a proper program generates a phased array sequence of signals. In a pulser with delays, the signals are fed through a multiplexor into a water wedge that is attached to a valve being tested. For a sequential operation of the valves from the open to the closed position, ultrasonic signals are transmitted through the fluid contained in the valve and reflected back through piezo-electric crystals to the multiplexor. By summation and merger of the signals, an image can be developed of the operation of the valve to determine if the valve is operating properly. By use of the water wedge, the top plate of the valve appears to disappear because the water wedge has the same refractive angle as the fluid contained in the valve.

Classes IPC  ?

• G01N 29/04 - Analyse de solides