Abstract: A method for manufacturing a fluid coupling apparatus for communicating fluid between a fluid hose and a heat exchanger. The present invention provides an inexpensive method for producing an integral fluid coupling apparatus that minimizes and eliminates the spacing and clearance required of bending tubular fluid lines and conduits. The method of the present invention utilizes a seamless welded tubing and compresses a portion of the tubing into a hollow rectangular configuration. During the pressing operation, a sphere is inserted into the tubing and aligned with an aperture previously formed in a wall of the tubing. When the tubing is compressed, the sphere is forced through the aperture provided in the tubing, and a raised lip or shoulder is extruded from the portion of the tubing defined in the aperture. A raised lip or shoulder is formed from the extrusion, and the raised lip is inserted through an aperture provided in a wall of the heat exchanger and rolled onto the wall of the heat exchanger.

Abstract: A reciprocating compressor includes a cylindrical bore in which a piston reciprocates. A cylinder head is situated adjacent an end of the bore and forms a suction chamber and a discharge chamber which communicate with the bore through respective valved passages. Fluid to be compressed enters the suction chamber through an outlet section of a muffler. That outlet section is made of a material having low thermal conductivity (plastic) and fits into the suction chamber to resist the transfer of heat to the suction chamber from the discharge chamber. A capillary tube includes an inlet end submerged in an oil reservoir and an outlet end mounted in a hole formed in the outlet section of the muffler for supplying oil to fluid entering the bore.

Abstract: A shaft roller, including a shaft, a casing with two ends, and further, for each of the two ends of the casing, a bearing support, an end bearing, and a protective cap. The roller further includes a plurality of inner tubes, a plurality of ring holders, and a plurality of inner bearings. For each end of the casing, a groove is cut into the inner periphery of the casing for holding a peripheral outward extension of the bearing support. For each end of the casing, the bearing support has a wheel body with spokes, surrounding the end bearing and holding the end bearing with an inward projection. The end bearing is a needle roller bearing around the shaft, having a needle cage with a plurality of needles. For each end of the casing, the protective cap prevents dust and humidity from entering the casing, being attached to the bearing support by a plurality of blocks.

Abstract: A method is disclosed for bonding a nozzle plate to the front nozzle face of a printhead. A bonding station includes a heated printhead holder in opposed relationship to a nozzle plate holder with a curved lower surface. A nozzle plate having a row of nozzle holes and alignment apertures are formed by laser ablation in a thin polymer film. The film is moved into the bonding station, and the nozzle plate is aligned with pins on the curved nozzle plate holder surface. Both the printhead holder and nozzle plate holder are adjustable in directions perpendicular to the nozzle array on the printhead face and also rotationally. The adjustment insures that the nozzle plate, with adhesive applied to the bottom surface, makes initial tangential contact at the center of the nozzle array, resulting in accurate alignment of the nozzle plate holes with the nozzle array in the printhead face.

Abstract: The cantilevered stator vanes of the compressor section of the gas turbine engine are treated by including a rotating hub having a by-pass passage for removing the low momentum fluid from the main air stream adjacent to the tips of the stator vanes in the compressor and returning it back into the main air stream after having treated the air while avoiding penalties and excessive heating. A plurality of vanes are circumferentially spaced in the by-pass passage for removing vortices and streamlining the flow before injected the air back into the airstream. The vane passage hub treatment is fabricated in a single cast piece in one embodiment, in a three ring configuration in another embodiment and in a segmented ring configuration in still another embodiment.

Abstract: In a process for the manufacture of a hollow turbomachine blade in which die-forged and machined sheets are assembled and diffusion welded face to face after applying an antidiffusion coating to areas of the sheets where the assembly is to be expanded in forming the hollow blade, the welded assembly is subjected to a step of unsticking the coated areas of the sheets which are pressed together during the diffusion welding step, the unsticking step including subjecting the assembly to localized heating in a region where the intermediate sheet is provided with intercavity communication holes, and injecting pressurized gas into the welded assembly in a controlled manner to hot form a gas distribution duct in the locally heated region of the assembly to facilitate unsticking of the remainder of the coated areas. Apparatus for use in carrying out the unsticking step is also described.

Abstract: An apparatus for straightening portions of a plurality of purlins of a roof structure which have been moved from an original position to a deformed position and a method of using the same is disclosed. A carriage is provided which is mounted for movement along the length of the purlins in a downstream direction. The carriage has a plurality of guides which are positioned adjacent the plurality of purlins in the deformed position. A purlin straightening device attached to the carriage moves the carriage in a direction lateral to the length of the purlins so that the guides move the portions of the plurality of purlins from the deformed position to the original position.

Abstract: A method of manufacturing a catalytic converter having a non-round monolithic ceramic substrate comprising the steps of: wrapping a non-round monolithic ceramic substrate in a sufficient amount of the supporting mat material whereby the substrate peripheral surface is substantially covered; inserting the wrapped substrate into a metal shell which substantially surrounds the wrapped substrate; placing at least one force redistribution plug on the peripheral surface of the metal shell and compressively closing the metal shell around the substrate; and securing the metal shell to provide a gas tight seal and to hold the compressive stress.

Abstract: A method of manufacturing a clad product in which a metallic substrate material is extruded and a cladding material is then brought into intimate contact with the heated extrudate before the extrudate has had an opportunity to cool to room temperature. The cladding material is compressed against the heated extrudate, thereby bonding the cladding material to the substrate material and forming the clad extruded metallic product. The clad extruded metallic product is then cooled to room temperature.

Abstract: A method of manufacturing a high performance, high fin density heat sink (10) uses extruded first and second base elements having an alternating arrangement of closely spaced fins and recesses for receiving opposing fins. The fins in the first and second base elements are bonded to the recesses formed in the common face of the opposing base element to form the bonded extruded heat sink.

Abstract: A method of manufacturing a convoluted heat exchanger core from a continuous sheet of thermally conductive metallic material includes providing a pusher bar assembly having a table, a pusher bar plate mounted transversely across the table and a stripper bar plate mounted transversely across the table in opposed relation to the pusher bar plate. The pusher bar plate is moveable along the length of the table between a feed position that is spaced a predetermined distance from the stripper bar plate and a fold position that is located adjacent the stripper bar plate. The sheet of material is fed lengthwise onto the table and into engagement between the pusher bar plate and the table with a portion of the sheet of material located between the pusher bar plate and the stripper plate when the pusher bar plate is in the feed position. The portion of sheet material is folded into a convolution by moving the pusher bar plate to the fold position.

Abstract: A double-sided electrical interconnect flexible circuit particularly useful for ink-jet pens and a method for assembling an ink-jet pen with the flexible circuit is described. A wide web, dielectric, flexible tape, such as of a polyimide material, is used to allow the substantially simultaneous formation of redundant flexible circuits across the web. The web is laminated with a conductive material foil and a plurality of redundant circuit patterns formed on the web in a single masking and etching process, or the like. A cover layer, also of a wide web format, dielectric material is coated over the circuit patterned conductive layer. Vias are provided in both the tape under layer and the tape over layer for appropriate electrical connections whereby a first device, such as an ink-jet printer controller, can be connected through one layer and a second device, such as a replaceable ink-jet pen's electrically active components can be connected through the other layer.

Abstract: A band clamping machine is provided for clamping a metallic clamping band having a band section, a lever for reducing an inner diameter of the looped band section, and a pair of fixing pieces for holding the lever. The band clamping machine includes a diameter reduction mechanism having a clamping arm for turning down the lever and an arm driving mechanism moving the clamping arm so as to turn down the lever. The arm driving mechanism includes a first mechanism for moving the clamping arm from an initial position to a mid position, and a second mechanism for moving the clamping arm from the mid position to a final position. A fixing mechanism is provided to bend the fixing pieces inward to fix the lever at the final position between the fixing pieces.

Abstract: Method for fabricating seamless adaptor for connecting trunk line HVAC duct to branch conduit including steps of positioning first segment of strip of sheet metal at first die assembly and exerting force onto first segment forming elliptical shaped segment, punching hole into central portion of elliptical segment and providing connector strip between first and trailing segment of metal strip; positioning elliptical segment at second die assembly and at same time positioning trailing segment at first die assembly and exerting force onto first and trailing segments, drawing elliptical segment at second die assembly into form having generally cylindrical shape projecting transverse to surface of the elliptical segment and positioning hole to be generally centered within end of form and forming annular rim surrounding hole and bending portion of elliptical shaped segment surrounding another end of form forming flange having a camber; positioning form at third die assembly and at same time positioning trailing seg

Abstract: A process for manufacturing a hollow turbomachine blade made from a titanium alloy of the TA6V type includes a hot twisting step in which an element of the blade is twisted progressively at a temperature above 700.degree. C. by a plurality of bars which are rotated about the twist axis and act on collars previously fixed to the element, the distribution and number of collars being determined according to the desired twist to be imparted and such as to obtain a linear twist development between each collar. Hot twisting apparatus for use in carrying out the operation is also described.

Abstract: A method of fastening an intake manifold to cylinder heads of an internal combustion engine having two cylinder banks in order to reduce the deformations of cylinder bores in the cylinder heads. The method includes steps of (1) temporarily fastening the cylinder heads to the cylinder block using cylinder head bolts with a fastening torque of 1.0 kgfm (9.8 Nm), (2) temporarily fastening the intake manifold to the cylinder heads using intake-manifold bolts with a fastening torque of 1.6.+-.0.1 kgfm (15.7.+-.0.98 Nm), (3) loosening the fastening torque of the int-manif. bolts up to 0 kgfm (0 Nm; see h of FIG. 3), (4) fixing the cylinder heads to the cylinder block using the cylinder head bolts with a fastening torque of e.g. 3.0 kgfm+60.degree. (29.4 Nm+60.degree.) and (5) fixing the intake manifold to the cylinder heads using the intake-manifold bolts with a fastening torque of 0.9.+-.0.1 kgfm (8.8.+-.0.98 Nm).

Abstract: A controlled deflection roll for a papermaking machine. The roll includes a roll shaft having a longitudinal axis, a roll shell surrounding the shaft, and a bearing pad assembly supported on the shaft to supportingly engage the shell and move the shell translationally relative to the shaft in a plane including the axis. In one embodiment, the bearing pad assembly includes a plurality of bearing pads. Each bearing pad is spaced apart in the cross-machine direction and has a contact surface engageable with the inner surface of the shell. The contact surface is in the shape of a parallelogram and defines therein at least one recess. The side edges of adjacent bearing pads are straight and parallel to each other and define gaps therebetween. The gaps do not extend along a plane which is perpendicular to the axis. In another embodiment, the bearing pad assembly includes at least one bearing pad having a contact surface and opposite edges. The contact surface has a contact surface portion engageable with the shell.

Abstract: A laminated-type evaporator for an automotive air conditioning refrigerant circuit includes a plurality of tube units having a pair of tray-shaped plates. Each of the tray-shaped plates includes a depression defined therein, a flange extending about the periphery thereof, and a wall disposed at an intermediate location therein and extending a portion of the length of each plate to thereby define a rear side and a front side to each plate. The wall includes a flat portion formed at an upper end thereof. A slit is formed at the flat, upper end portion of the wall by shearing. The slit extends along substantially the entire length of the wall along the wall's longitudinal axis.

Abstract: An adjustable deflection roll is illustrated and described having a rotating roll jacket, a carrier which passes axially through the roll jacket and is rotationally fixedly held at its ends in frames and at least one support element which is arranged on the carrier and exerts a support force on the inner side of the roll jacket in a pressing plane. The roll jacket is rotatably held on a bearing housing secured against rotation in the region of at least one of its axial ends by at least one bearing. The roll is of simple layout and easy to exchange in that the bearing housing is secured against rotation at the carrier at at least one roll end within the roll jacket or within an axial projection of the roll jacket.

Abstract: A lift valve communicating with a compression chamber of a .?.variable capacity.!. screw compressor is set forth including a valve housing, a piston reciprocally received within the valve housing, a shaft having a first end connected to the piston and a second end extending from the housing. The valve further includes a valve element connected to the second end of the shaft having a valve surface exposed to the compression chamber and a reciprocation mechanism for reciprocating the piston within the housing. The reciprocation mechanism includes a first pressure passage communicating with the housing adjacent a side of the piston, and a second pressure passage communicating with the housing adjacent and opposed side of the piston, wherein the valve surface is positively displaced toward and away from the compression chamber of the .?.variable capacity.!. screw compressor in response to the application of fluid pressure to at least one of the first and second pressure passages .?.