Abstract: A catalytically active component is deposited exclusively on a carrier component by utilizing a container-integrated carrier. Prior to the deposition of the active component on the carrier, the carrier is sealed and then the deposition of the active component is performed.

Abstract: There are provided a fixed-scroll moveable device which is capable of moving a fixed-scroll of a scroll compressor in the directions of an X axis and a Y axis, and an orbiting-scroll revolution compensation device which is capable of revolving an orbiting-scroll in a &thgr; direction by way of a main frame. An optimum angle of the fixed-scroll relative to the orbiting-scroll and an optimum wrap clearance are determined at the same time while orbitally moving the orbiting-scroll. Thereby, alignment of a scroll compression section is performed in a short time with a high precision including positioning of a rotating direction of the fixed-scroll relative to the orbiting-scroll.

Abstract: A base material of a peripheral wall and a vane rotor is formed by extrusion molding an aluminum alloy and cutting an extrusion molded article to the desired length. Further, the extrusion molded article can be molded with high accuracy by extracting the aluminum alloy after extrusion. Preferably, 6000 system of Al—Mg—Si is used as an aluminum alloy. The cutting process and polishing process are applied to the roughly molded base material to form the peripheral wall and the vane rotor. By varying the length to be cut, the volume of each retard hydraulic chamber and each advance hydraulic chamber are adjusted. When the volume of the hydraulic chambers are adjusted, the torque for relatively rotating and driving the vane rotor with respect to the housing member can be changed even pressure of working oil is the same.

Abstract: Roller covers and methods for manufacturing such roller covers are disclosed. According to one method, a paint carrying medium is secured to a core material to form a composite material having at least one core layer and a paint-carrying layer, wherein the composite material has opposite edges. The opposite edges are positioned adjacent to one another and are secured together. According to an alternative method, a paint-carrying medium having a backing is provided. The backing is treated to an adhering state and is applied to a core while the backing is in the adhering state. According to yet another method, a paint-carrying medium having a backing including opposite edges is provided. The opposite edges are positioned adjacent to one another and are secured to one another. According to an alternative embodiment, a roller cover includes a paint-carrying medium and a core supporting the paint-carrying medium.

Abstract: A method of manufacturing a fuel inlet having an improved anti-rust property. As material for an inlet pipe 2 and a breather tube 4, stainless pipes are used. A pipe expanding process in which an end portion of the inlet pipe 2 is enlarged in diameter to form a filling part 6, a screw-thread forming process in which a helical groove 12 is formed on a periphery of the filling part 6, a welding process in which the breather tube 4 is welded to the inlet pipe 2, and a coating process in which a cationic electrodeposition coating is applied to a fuel inlet 1 after the welding process are performed in turn, thereby obtaining the fuel inlet 1 having an improved anti-rust property.

Abstract: An improved method for producing a basic B tube configuration for a folded heat exchanger tube (26). A braze clad metal strip (10) having inner (1) and outer (0) surfaces and a opposed edges (12) is progressively formed over and in by a series of progressive roller stations (14A, 16A-14J, 16J) until the lower edges (12) on a pair of central abutting flanges 18 centrally engage the strip inner surface (1). Between two of the roller stations (G and H), a powered dispense valve (20) with nozzle (22) continuously dispenses a bead (24) of material containing flux or, alternatively, flux and braze material. Bead (24), rather than being a thin stripe, is a thick semi cylindrical shape, with substantial viscosity. As the flanges (18) move into abutment and the downstream roller stations, the flange edges (12) are forced down into the bead (24), some of which is pumped up between the outer surfaces (0) of the abutted flanges (18), yielding a good, solid braze joint between the two.

Abstract: A elastomer-covered roller (10) is provided with an improved bond coating for bonding the elastomeric cover (14) to the core (11). At least one layer of material (15) is thermally sprayed on the core to form a rough surface having a roughness from 400 microinches Ra to 2000 microinches Ra or greater. In a further improvement a denser, less porous layer (17) may be applied next to the core to protect the core from corrosion, followed by a less dense layer (19) applied to the first layer and having a similarly rough surface (20) for good mechanical bonding.

Abstract: A seal features a first curved region generally concave in a direction of concavity, and a second curved region generally concave in the direction of the concavity of the first curved region. The second curved region is oriented within the direction of concavity of the first curved region. A first bend connects the first curved region to the second curved region, and a second bend connects the first curved region to the second curved region.

Abstract: A tube and method of making the same for a heat exchanger includes a base, a top spaced from and opposing the base, a first side interposed between the base and the top along one side thereof, and a second side interposed between the base and the top along another side thereof. The tube includes an end form formed solely on either one of the first side and the second side to create a stop for inserting said tube into a manifold of the heat exchanger.

Abstract: A method of manufacturing a piston for a compressor and a piston manufacturing machine, with which a hollow piston that can remain light while in operation after being built into a compressor can be produced, are provided. A piston assembly 51 comprising a body part and cup parts is accommodated in a housing recess 50 of a cassette jig 48 and are conveyed. When the cassette jig 48 is positioned just under a welding chamber 45, the housing recess 50 communicates with the welding chamber 45 and is isolated from the outside air by a sealing material 53. The pressure in the welding chamber 45 is reduced to nearly a vacuum by an exhaust pump 46, and electron beam welding is applied to the coupling portion 67 of the piston assembly 51 in a near vacuum atmosphere. After the electron beam welding, a hollow space 68 in the piston assembly is sealed hermetically and contains a near vacuum atmosphere.

Abstract: A method of determining the throat area between adjacent airfoils in a nozzle set among a plurality of nozzle sets of a machine involves providing a plurality of inspection points on a suction side of a first airfoil and a pressure side of a second airfoil, the second airfoil being adjacent to the first airfoil. A plurality of inspection points are provided on each of an outer sidewall and an inner sidewall, respectively, of the nozzle set. Positions of each of the first and the second airfoils, and the outer and inner sidewalls are determined by measuring the positions of the inspection points. The measured positions of each of the first and second airfoils, and the outer sidewall and the inner sidewall are compared with corresponding predetermined values.

Abstract: A method of fabricating a catalyst converter includes the steps of: obtaining a tubular member by rolling up a metallic plate member of a rectangular shape having ear portions at four corners thereof such that opposing ones of the ear portions abut against each other, and by effecting butt welding for both ends of the plate member; cutting off projecting portions formed by the ear portions at both ends of a weld of the tubular member; incorporating a catalyst carrier into the tubular member with the projecting portions cut off; effecting drawing for both end portions of the tubular member with the catalyst carrier incorporated therein; and attaching a pair of flanges, respectively, to the both end portions of the tubular member subjected to drawing.

Abstract: Residual stress generated in strip metal W is removed by annealing the strip metal W which has gone through a pressing process, and a compressing process is implemented thereafter whereby, as portions hardened due to work-hardening (in particular, folded portions 121) can be softened, the strip metal W which has gone through the pressing process can be easily compressed so that the radius of curvature of the folded portions 121 is reduced to a predetermined dimension, thereby making it possible to improve the dimensional accuracy of the finished fin 120 even if the fin 120 is made of a metal having a relatively high hardness (stainless steel).

Abstract: A heat roller for a fixing device included in an image forming apparatus has an insulation layer and a conductive layer sequentially formed on the inner periphery thereof. To form each of the insulation layer and conductive layer, a spray gun is inserted into the heat roller. Subsequently, paint, which is a liquid for forming the insulation layer or the conductive layer, is fed under pressure to the spray gun. The paint is radially jetted via the holes of the spray gun and evenly deposits on the inner surface of the heat roller. In this condition, the spray gun is moved in a preselected direction in order to coat the entire inner periphery of the heat roller. After the insulation layer has been formed and then sintered, the conductive layer is formed on the insulation layer and then sintered. The two layers can be formed in a short period of time and provides the heat roller with high quality at low cost. A method of producing the heat roller is also disclosed.

Abstract: A coolant tube for use in a heat exchanger is manufactured by using a plate member as follows: the plate member is folded in substantially regular distances to form a plurality of folded portions; and two opposite ends of the plate member are joined in a manner that end parts of the folded portions are brought into contact with flat portions of the plate member to thereby form coolant flow passages.

Abstract: Methods for manufacturing outlet nozzles for use in rocket motors are disclosed. The methods include providing an inner wall, positioning an outer wall around the inner wall, positioning spacers in the space between the inner and outer walls, and laser welding between the spacers and at least one of the inner and outer walls in order to form cooling ducts between the spacers and to provide T-shaped joints between the spacers and at least one of the inner and outer walls, the T-shaped joints including a rounded shape within the cooling ducts.

Abstract: The present invention is directed to a method of producing a catalytic converter which comprises the steps of providing a shock absorbent member around an outer periphery of a catalyst substrate, inserting the catalyst substrate and the shock absorbent member into a cylindrical workpiece, fixing the cylindrical workpiece to prevent the cylindrical workpiece from being rotated about a longitudinal axis thereof, reducing a diameter of a body portion of the cylindrical workpiece covering at least a portion of the shock absorbent member to hold the catalyst substrate in the cylindrical workpiece, spinning at least an end portion of the cylindrical workpiece, by means of a plurality of spinning rollers, which are evenly positioned around the outer periphery of the end portion, and which are revolved about the axis of the end portion along a common circular locus, and moved in a radial direction of the end portion, and moving the plurality of spinning rollers in an axial direction of the end portion to reduce a dia

Abstract: A catalytic converter is constructed by measuring a substrate to be placed within the outer shell or can, wrapping the substrate in a selected mat and loading the package (mat and substrate) into the can. The can is larger than it will be at completion of manufacture to render such loading easier. Subsequent to loading, the measurement of the substrate is used to direct the degree to which the can is reduced in outside dimension such that a selected annulus is created between the substrate and can, said annulus being occupied by said mat.

Abstract: A tip material for a turbine blade or for repairing a damaged tip of a turbine blade having a metallic coating, the material used for the tip is equivalent in composition to the metallic coating material used for the turbine blade. Also disclosed is a method of manufacturing or repairing a tip of a turbine blade having a metallic coating by reforming the blade tip with a material equivalent in composition to the metallic coating material used for the turbine blade by bonding the material to the damaged tip.

Abstract: During the assembly of a steam generator, the boiler columns are assembled, and, in parallel, headers and other wall boxes are assembled on booms of the boiler columns, so that when the boiler columns are completed, the headers and wall boxes are also finally assembled. Next, the peripheral roof section is assembled onto the boiler columns, and the vertical steam generator-containing walls are suspended from the peripheral roof section. Parallel to this, the inner roof section is constructed and the convection heating surfaces are successively mounted to the inner roof section and lifted upward from the base. The assembled inner roof section and convection heating surfaces are then lifted to the height of the peripheral roof section, and the two parts of the roof are connected. Finally, the furnace walls having a vertical or inclined tube arrangement, including the furnace hopper, are assembled.