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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7509731 | Method and device for manufacturing non-contaminated MOX fuel rods The invention relates to a method and device for production of non-contaminated rods from MOX tablets in columns, within a confinement chamber divided into compartments, by means of a centering and aligning element for the tablets and a long pushrod with a sensitive... | 03/31/2009 |
| 7353588 | Installation tool for assembling a rotor blade of a gas turbine engine fan assembly A rotor blade installation tool for coupling a plurality of rotor blades to a rotor disc wherein each rotor blade extends from the rotor disc to a radially outer blade tip is provided. The tool includes a blade engagement end configured to engage the plurality of ro... | 04/08/2008 |
| 7314343 | Miniature manipulator for servicing the interior of nuclear steam generator tubes A manipulator for servicing tubes extending through a tube sheet having three major components: a base member, a block member, and a foot member. The base member has a holder for supporting tooling or inspection devices. The base member also has at least one gripper... | 01/01/2008 |
| 7290319 | Methods for installing a fuel pellet locking retainer in a nuclear fuel rod A method for installing a locking retainer in a tube to maintain internal components within the tube under compression comprising the steps of: a) providing an elongated retainer spring having large and small diameter sections with the large diameter section of a si... | 11/06/2007 |
| 7272204 | Method and apparatus for clamping a riser brace assembly in nuclear reactor An apparatus and method are provided which are designed to structurally replace welds that attach a riser brace assembly to a jet pump riser pipe. The riser brace assembly may include an upper clamp assembly, a lower clamp assembly, and a plurality of mechanical fas... | 09/18/2007 |
| 7246419 | Impeller clearance tool A tool and method are provided for providing a predetermined clearance between an impeller and a shroud of a jet engine assembly, wherein the shroud has a mating surface, and the impeller and shroud are partially disposed within a casing having a mating surface, whe... | 07/24/2007 |
| 6990714 | Modular submersible repairing system and repairing method A modular submersible repairing system includes a working unit having a tool module capable of repairing structures in a reactor. A scanning/pitching module is capable of being selectively connected to or disconnected from the tool module, and is provided with a sca... | 01/31/2006 |
| 6978530 | Basket assembly fixture and method of use A basket assembly fixture is useful in the construction of a basket assembly for interring spent nuclear fuel rods. The basket assembly fixture has an elongate base and a pair of lifting beams disposed above the base. Lifting beam raising means are provided at both ... | 12/27/2005 |
| 6959267 | Method of inspecting a heat exchanger and computer program product for facilitating same A method of inspecting a heat exchanger including a plurality of tubes having ends fixed in a tubesheet includes the steps of: establishing a baseline for each tube of its location in the tubesheet and its unique eddy current pattern resulting, at least in part, fro... | 10/25/2005 |
| 6763570 | Method of closing a pressure vessel A pressure vessel having a removable closure head in a high radiation environment is closed by placing the closure head having a flange over and spaced from the flange of a pressure vessel body containing fissile material. The closure studs are installed in closure ... | 07/20/2004 |
| 6760396 | Coated metal articles and method of making The method of protectively coating metallic uranium which comprises dipping the metallic uranium in a molten alloy comprising about 20-75% of copper and about 80-25% of tin, dipping the coated uranium promptly into molten tin, withdrawing it from the molten tin and ... | 07/06/2004 |
| 6715201 | Modular submersible repairing system A modular submersible repairing system includes a working unit having a tool module capable of repairing structures in a reactor. A scanning/pitching module is capable of being selectively connected to or disconnected from the tool module, and is provided with a sca... | 04/06/2004 |
| 6708394 | Basket assembly fixture A basket assembly fixture is useful in the construction of a basket assembly for interring spent nuclear fuel rods. The basket assembly fixture has an elongate base and a pair of lifting beams disposed above the base. Lifting beam raising means are provided at both ... | 03/23/2004 |
| 6409440 | Method for cutting a piece of sheet metal used to hold a layer of neutron-absorbing material on a wall of an atomic fuel assembly storage rack cell The present invention relates to a method for refurbishing an atomic fuel assembly storage rack the partitions (10) of which include a layer (14) of neutron-absorbing material between a wall (16) and a more or less rectangular piece of sheet metal (18) we... | 06/25/2002 |
| 6370749 | Heat pipe shaping device A heat pipe shaping device comprises a rectangular table, and each lateral surface of the table has a work station. The top plate of the table is elevated by a plurality of supporting rods at a periphery of the table. A vacuum manifold is connected to the... | 04/16/2002 |
| 6189212 | Method for tube plug removal A method for removing a plug from engagement with a nuclear reactor steam generator tube within a tube bundle, which plug has a shell, an expander, and a plug top, by providing a drill bit having a pilot portion and a drill portion, where the pilot portio... | 02/20/2001 |
| 6176006 | Rod lock and unlock mechanism for a mechanical tube expander A mechanical tube expander for expanding tubes into interlocked relationship with fins. Structure is provided for in situ storage of the expander rods and facilitating use of selected expander rods during a cycle of operation.... | 01/23/2001 |
| 5967708 | Reactor vessel head tool positioning device A tool fixture device for positioning tools to repair defects adjacent to the sealing grooves in a pressure vessel head. The device includes a two pair of parallel, spaced apart, arcuate segments adapted to fit into one of the sealing grooves. A support p... | 10/19/1999 |
| 5964029 | Apparatus for repairing cracked core spray supply piping in a boiling water reactor An apparatus for repairing cracked core spray supply piping in a boiling water reactor vessel includes a pair of clamps extending circumferentially around the piping on opposite sides of a crack and a preloading mechanism urging the clamps toward one anot... | 10/12/1999 |
| 5839192 | Method and apparatus for repairing cracked core spray supply piping in a boiling water reactor An apparatus for repairing cracked core spray supply piping in a boiling water reactor vessel includes a pair of clamps extending circumferentially around the piping on opposite sides of a crack and a preloading mechanism urging the clamps toward one anot... | 11/24/1998 |
| 5752317 | Method of restricting transverse displacement of a nuclear heat exchanger tube support plate Method of restricting transverse displacement of a nuclear heat exchanger tube support plate during a transient event, the support plate having a plurality of holes therethrough for passage of respective ones of a plurality of heat transfer tubes. The met... | 05/19/1998 |
| 5752311 | Method for expanding tubular members Method for expanding tubular members, such as U-shaped heat transfer tubes having ends thereof located in the confined space adjacent the curved sides of the bowl-shaped lower plenum of a typical nuclear steam generator. The apparatus includes an elongate... | 05/19/1998 |
| 5715598 | Method for sealing a bare hole defined by a nuclear heat exchanger tubesheet Method and joint for sealing a bare hole in a nuclear heat exchanger tubesheet. The tubesheet has a plurality of holes formed therethrough, wherein at least one of the holes has been left vacant by a heat transfer tube removed from the hole. Such a hole i... | 02/10/1998 |
| 5689537 | Jet pump beam tensioner An apparatus for tensioning a hold down beam of a nuclear reactor jet pump inlet mixer is configured to be inserted in a confined annulus between a core shroud and a reactor vessel of a nuclear reactor. The hold down beam includes a beam body, a pair of o... | 11/18/1997 |
| 5685066 | Tube expanding assembly A tube expanding assembly expands a plurality of tubes used in combination with a plurality of fins and end sheets to form a heat exchanger, the tube expanding assembly includes a nest plate secured to the base wherein the nest plate holds the tubes there... | 11/11/1997 |
| 5557840 | Tube sheet locator and tube expander Apparatus for localized radial expansion of a ductile metal tube into tight engagement with a tube support sheet, e.g., for deformable member which is axially compressed by hydraulic pressure to effect radial expansion of the deformable member and the tub... | 09/24/1996 |
| 5406599 | Spacer grid cell fixture system A weld fixture for receiving and aligning the fuel rod contact points of a nuclear fuel bundle spacer grid. Two plates are provided with intersecting unequally spaced slots that define polygons on one side of each plate. Both plates have bores therethroug... | 04/11/1995 |
| 5400499 | Internal bushing removal tool A tool for removal of the internal bushings from a piston coupling of a CRD. The tool incorporates a spring-loaded and hardened collet supported on one end of a ram. The collet has a pair of arms with shoulders or projections which latch inside the intern... | 03/28/1995 |
| 5400498 | Apparatus for removing keys from support grid An apparatus is presented for removing the keys smoothly and reliably from support grids of a fuel assembly. The apparatus performs the task of removing the keys, which had been inserted into the grid through the opening sections of the grid, and enables ... | 03/28/1995 |
| 5400373 | Assembly fixture and method for fabricating grids Disclosed is an assembly fixture and method useful for the assembly and fabrication of metal grids such as used to support and position the fissionable fuel rods of a nuclear fuel assembly. The grid assembly fixture uses a grid assembly plate (1) and a pl... | 03/21/1995 |
| 5398264 | Grid welding fixture for a spacer grid A modular grid welding fixture for a spacer grid that facilitates full grid laser welding of a spacer grid in one setup. The modular design allows for partial implementation of each weld type. A base plate is used for mounting to the positioning/rotationa... | 03/14/1995 |
| 5375756 | Apparatus for assembling and welding final end plugs to nuclear fuel-containing cladding tubes and inspecting the welds, all on an automated basis In an automated final weld apparatus, a transporter conveys nuclear fuel-loaded cladding tubes successively to a check station to verify the presence of a plenum spring in the open end of each cladding tube, a reader station where a unique first end plug ... | 12/27/1994 |
| 5369866 | Method for insertion or removal of fuel rods into or from a grid of a nuclear fuel assembly A key member, a method for insertion and/or removal of the fuel rods in a nuclear fuel assembly using the key member and a method of disassembling the nuclear fuel assembly using the same key member are disclosed. The key member has first projections and ... | 12/06/1994 |
| 5369876 | Apparatus for inserting U-shaped tubes in a heat exchanger core An apparatus for inserting U shaped tubes in a heat exchange core includes a track which includes a pair of parallel channels for receiving the limbs of the tubes and for guiding the limbs on three sides, a slide for pushing the tubes along the track and ... | 12/06/1994 |
| 5353496 | Mechanical tube expander with four axis control A mechanical tube expander for simultaneously expanding plural hairpin tubes into interlocked relationship with plural fins which includes a frame on which is provided a receiver to support the bent portions of the hairpin tubes in an assembly of fins loo... | 10/11/1994 |
| 5342158 | Handling and deploying radioactive sources A radioactive source is mounted at one end of a rod and a ball-shaped coupler is disposed at the other end of the rod. An apparatus for handling a plurality of radioactive sources respectively mounted at one end of a plurality of rods having a ball-shaped... | 08/30/1994 |
| 5323529 | Heat exchanger bundle extractor assembly and method Apparatus for extracting a heat exchanger tube assembly from a heat exchanger shell includes an extractor frame, an extractor body moveable with respect to the frame, and powered extraction members for literally moving the extractor body with respect to t... | 06/28/1994 |
| 5309626 | Reactor vessel head O-ring installation tool A tool for use in installing O-ring seals in the removable head of a nuclear reactor pressure vessel. Disclosed are two embodiments of the tool. One embodiment is adapted to fit within the stud bolt holes of the flange of the removable head of the pressur... | 05/10/1994 |
| 5293682 | Apparatus for dismantling potentially contaminated tubes from a tube bundle An apparatus for deforming, splitting and chopping of contaminated, or potentially contaminated, heat exchanger tubes into short tubes segments that easily may transported to an off-site location for decontamination or disposal. The invention has particul... | 03/15/1994 |
| 5291651 | O.D. gripper Apparatus (100) for pulling a projecting tube (14) from a tube sheet (12), along the tube axis (18), comprising a base (200) for engaging the tube sheet and a jacking assembly (300) mounted on the base and actuable by a first fluid pressure variation betw... | 03/08/1994 |
