Abstract: A seamless plastic pressure vessel having a heat exchanger encased therein is disclosed. The pressure vessel is a unitary seamless wall and the wall surrounds a heat exchanger unit comprising a length of hollow tubing having ends retained in a mounting fitting. The pressure vessel may be formed by a rotational casting or blow molding technique.

Abstract: A method for repairing the shroud surfaces of a gas turbine engine to provide corrosion and oxidation resistance of the shroud segments while also restoring the dimensional integrity of the shroud segments. The method entails removing the oxidation and corrosion products from the shroud segment, removing preexisting coating materials, applying a material compatible with the shroud segment substrate material, machining the surface, applying a corrosion-resistant, oxidation-resistant and rub-compliant material to the shroud segment using a HVOF process, machining the shroud segment to preselected dimensions and applying an aluminide coating for improved oxidation and corrosion resistance of the repaired surfaces.

Abstract: A method for making air turning vanes each having formed therein a pair of locking protuberances which adapt the vanes to self-gripping attachment between a pair of rails to fabricate an air turning vane and rail assembly utilizes an elongated length of double plate airfoil vane stock including a front plate having an outer concave surface arcuately bowed about the central longitudinal axis of the plate, and a rear plate having an outer concave surface arcuately bowed about the central longitudinal axis of the rear plate. A vane of a desired length is severed from the vane stock, and the outer concave surface of the rear vane plate is impacted by a punch with sufficient force to deform from the inner surface of the plate a generally hemispherically-shaped button having a lower severed wall which forms a locking lip. The apparatus according to the present invention includes a guillotine-like shearing structure/vane stock support fixture which vertically slidably supports shear blade.

Abstract: A method and fixture assembly for assisting in the matching and assembly of components of a variable stator vane assembly of a gas turbine engine. The method generally entails a stator vane configured to be assembled to a casing with a spacer. The vane has a surface at a perimeter thereof and a seat offset from the surface. The spacer to which the vane is to be assembled has first and second surfaces offset relative to each other, the first surface being adapted to engage the seat of the vane and the second surface adapted to face the surface of the vane. The vane is installed within an opening in the casing so that a first sealing member is between the casing and the vane, the casing is between the first sealing member and a second sealing member, and the seat extends through the opening. A fixture is then mounted to the vane so that the casing and the first and second sealing members are clamped between the fixture and the vane under a load.

Abstract: A fabricating method for a one-piece refractory metal rocket engine chamber is described. Hollow liner sections of a platinum group metal or alloy are inserted into a chamber barrel portion to form the combustion chamber, connecting into a conical portion, a venturi throat and into a second conical portion, forming an expansion nozzle exit of the chamber. The hollow liner sections correspond to the interior shapes of the chamber portions. A refractory metal split hollow mandrel completes an assembly which is subjected to a hot isostatic pressing cycle. This HIP cycle expands the hollow mandrel, supporting the liner, outward against the chamber wall, pressure bonding the liner sections to the chamber portions. Scarfed edges of the liner sections are also bonded. The split mandrel is then chemically removed from the chamber resulting in a lined rocket engine chamber.

Abstract: Pressure processing roll with a roll jacket, the roll jacket rotatably mounted on a carrier by a bearing arrangement. The bearing arrangement has at least one hydrostatically supported bearing surface, which forms a gap with an opposing surface. A normal to the hydrostatically supported bearing surface, and therefore a normal force, has at least one axially oriented component. The bearing arrangement is acted upon by a predefined axially oriented force which substantially completely closes the gap in the absence of hydrostatic pressure in the hydrostatically supported bearing.

Abstract: A hermetic rotary compressor assembly having a housing, a cylinder block and a bearing assembly within the housing. The cylinder block and the bearing assembly define a cylindrical cavity which has a roller piston disposed therein. The rotary compressor assembly includes a motor drivingly coupled to the roller piston and the cylinder block has a vane slot extending completely axially through and extending radially from an outside perimeter surface of the cylinder block to the cylindrical cavity. At least a portion of the vane slot is defined by a pair of substantially parallel sidewalls and a vane is disposed in and guided by the vane slot and is urged against said roller piston. The cylinder block is fixed in a state of circumferentially oriented stress.

Abstract: A method for forging a one-piece or two piece flange-type ball valve, including forging the left and right primary elements, the process including the direct forging of the water inlet seat and the ball valve seat for a one-piece flange-type ball valve, the forging of the water inlet seat, the ball valve seat, the position limiter seat and the water outlet seat. The fabrication of all the center through-holes and ball valve chamber are carried out in a single process without requiring the machining of the interior sections. Friction welding methods are used to weld the water inlet seat to the ball valve seat and the position limiter seat to the water outlet seat as if they were fabricated entirely by forging. The friction welding beads built-up along the mated welding surfaces inside the center through-hole and exterior are then removed to achieve a smooth finish and enable the valve to have a seamless appearance as though constructed of a single unit of material.

Abstract: A semiconductive roller has an electrically conductive shaft, a roller provided on the shaft formed of silicone rubber with carbon contained therein. The silicone rubber is also added olefin oil and zinc oxide. A method is used for manufacturing a semiconductive roller formed of an electrically conductive shaft. The method includes carrying out a first vulcanization where the semiconductive roller is shaped into a roller and carrying out a second vulcanization where the semiconductive roller is heated at 200° C. for substantially four hours.

Abstract: A multilayer engine bearing (26) includes a steel backing (36) having a liner (38) of bearing metal of either copper-lead or aluminum alloys formed on the backing (36) and a thin layer (44) of either copper or nickel plated on the liner (38) to define a base lining member (40) of the bearing (26). A multilayer overplate (46) is formed on the base lining member (40) and includes an underlayer (48) of a lead-tin-copper alloy having a thickness of about 10 &mgr;m and an overlayer (50) of tin having a thickness of about 5 &mgr;m. The multilayer overplate (46) exhibits exceptional fatigue resistance under high dynamic loading conditions and retains good conformability and embedibility characteristics.

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 roll, in particular a variable-crown roll, including a frame beam, an axle journal arranged at each end of the frame beam and a revolving roll mantle mounted by bearings on support of the axle journals. A glide shoe is arranged on the frame beam to act on the roll mantle in order to produce a loading pressure in a nip defined between the roll and a back-up roll. A hose filled with fluid is situated between the glide shoe and the frame beam in order to equalize the loading pressure transferred through the glide shoe in the longitudinal direction of the roll.

Abstract: A system for fabricating muntin bars from sheet material. Sheet material in the form of thin ribbon stock is fed to a first forming station including a punching mechanism that punches the ribbon stock at a precisely predetermined location. The ribbon stock is delivered from the first forming station to a second forming station in the form of a rolling mill. The stock passes through a succession of forming rolls to produce a tube having a desired cross-sectional shape. The tube is delivered from the second forming station to a third forming station including a severing apparatus that severs the tube at a precisely predetermined location to produce a muntin bar. After severing, the muntin bar is engaged by a conveyor and moved to a desired location.

Abstract: A process for manufacturing a low-carbon steel pressure vessel, which may be used as an inflator housing (18), comprises providing a cylindrical billet of low-carbon steel which comprises by weight about 0.07% to about 0.15% carbon, about 1% to about 2% manganese, less than about 0.02% phosphorous, less than about 0.015% sulfur, about 0.5% to about 2.10% chromium, about 0.2% to about 1.0% nickel, about 0.2% to about 0.7% molybdenum, less than about 0.65% copper, less than about 0.25% residual elements, and the balance of the composition iron. A tube is formed with a cylindrical wall by axially piercing the cylindrical billet, while the cylindrical billet is heated is at a temperature of about 1000° C. to about 1300° C. The thickness of the cylindrical wall is then reduced to a first thickness by a first cold drawing of the tube. The tube is annealed after the first cold drawing. The thickness of the cylindrical wall is further reduced to a second thickness by a second cold drawing.

Abstract: A method for refurbishing turbine engine vanes in which the airfoils are removed and replaced. The original configuration of the vanes can be modified from a single casting or welded pair to a multi-piece component assembly comprising individual airfoil segments attached to the inner and outer platforms. The component assembly allows replacement of airfoils and/or platforms with improved castings in the form of improved alloys, improved physical geometry, or both. Modifications can be made in the vane class area without the need to modify the airfoil contour by brazing or other contour alteration processes. According to the method, the platforms are separated from the airfoils, the openings in the platforms are sealed, new airfoil sockets are cut into the platforms, and the vane is reassembled.

Abstract: A flexible connector apparatus for decoupling vibrations, for example, along the components of an internal combustion engine exhaust system. The flexible connector apparatus is provided for connecting first and second components in the exhaust system, and includes a bellows for accommodating relative movement between the first and second components. The flexible connector apparatus includes an attachment construction which enables weldless, gasketless connection of the bellows to at least one of the first and second components. The flexible connector apparatus may include a liner tube structure having inlet and outlet liner tubes. An alternative construction incorporates a multi-ply bellows in the absence of a liner structure.

Abstract: A machine includes a casing disposed in a housing for receiving one or more tubes and a number of fins engaged around the tubes. A frame is slidably received in the housing, and one or more rods are secured to the frame and moved to engage into and to expand the tubes to engage with the fins when the rods are moved toward the tubes. A bracket and a seat have one or more pipes slidably received in the barrels for slidably receiving the rods and for preventing the rods from being bent. The rods each includes a mold piece for further expanding the tubes.

Abstract: A method for the manufacture of a poppet valve made of a .gamma.-TiAl base alloy for internal combustion engines. In this method, the .gamma.-TiAl blank is first subjected to primary forming, for example, by extrusion, in such a manner that thereafter it has approximately the diameter of a valve head and the material properties required for the valve head. The secondary forming is then carried out by extrusion using a die designed in such a manner that the diameter of the inlet opening corresponds approximately to that of the blank after primary forming, and a cylindrical section corresponding to this diameter, followed by a transition in the form of a narrowing which corresponds approximately to the valve cone to the outlet opening. The outlet opening has at least approximately the same diameter as the diameter of the valve shaft. The extrusion process is terminated when the desired thickness of the valve head has been attained.

Abstract: A belt providing continuous lining up of plastics components held in a plastics web whereby components successively presented to an assembly position are then separated and utilized, having at least one guide element provided on each component whereby the component is located and positioned at the assembly position prior to separation of the component.

Abstract: A method and apparatus for forming a hardboard picture puzzle having multiple puzzle pieces without the use of a "start hole" and with the use of a die for cutting the picture puzzle about its perimeter and using a band saw to cut individual pieces forming said picture puzzle.