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| Number | Title | Issue Date |
| 7153376 | Yttrium modified amorphous alloy An amorphous alloy having a composition consisting essentially of about 45 to about 65 atomic % Zr and/or Hf, about 4 to about 7.5 atomic % Ti and/or Nb, about 5 to about 15 atomic % Al and/or Zn, and the balance comprising a metal selected from the group consisting... | 12/26/2006 |
| 7093568 | Control of autoignition timing in a HCCI engine Method and system embody a valve timing strategy to control the autoignition timing of a four stroke internal combustion engine (10) operated in an HCCI mode at different engine operating conditions such as different engine speed and torque. A particular valv... | 08/22/2006 |
| 6986949 | Fugitive patterns for investment casting A fugitive pattern of an article to be investment cast wherein the pattern includes a plurality of locator embossments disposed in an array to provide a datum reference system by which the pattern can be held and positioned by a manipulator, such as for example a gr... | 01/17/2006 |
| 6916387 | Weld repair of superalloy castings A method of repairing a void on a nickel or cobalt base superalloy investment casting by vibrating the casting for a time before repairing the void, vibrating the casting while filling the void wherein the void is filled by repeatedly making incremental weld deposit... | 07/12/2005 |
| 6911234 | Chemical vapor deposition apparatus and method Chemical vapor deposition apparatus and method are provided with coating gas distribution and exhaust systems that provide more uniform coating gas temperature and coating gas flow distribution among a plurality of distinct coating zones disposed along the length of... | 06/28/2005 |
| 6889743 | Fugitive patterns for investment casting A fugitive pattern of an article to be investment cast wherein the pattern includes a plurality of locator embossments disposed in an array to provide a datum reference system by which the pattern can be held and positioned by a manipulator, such as for example a gr... | 05/10/2005 |
| 6849132 | CVD codeposition of A1 and one or more reactive (gettering) elements to form protective aluminide coating CVD aluminide coatings including a small concentration of a reactive, gettering element for surface active impurities dispersed therein are formed for improved oxidation resistance. The aluminide coatings are formed by CVD codeposition of Al and the gettering elemen... | 02/01/2005 |
| 6845811 | Reinforced shell mold and method A method of making a ceramic shell mold comprises repeatedly coating a fugitive pattern of an article to be cast with a ceramic slurry layer and applying on the ceramic slurry layer a refractory stucco to form a plurality of ceramic slurry layers and stucco layers o... | 01/25/2005 |
| 6808010 | Method for treating ceramic cores A method for treating an unfired, molded ceramic core comprises placing an unfired (green) ceramic core having a thermosetting and/or thermoplastic binder on at least one setter, placing the setter and the green ceramic core thereon on a conveyor, conveying the sett... | 10/26/2004 |
| 6805189 | Die casting Method and apparatus for making a cast product shape using a die casting method wherein a molten metallic material is introduced into a shot sleeve having an end that is closed by a movable closure member. The molten metallic material is forced by movement of a plun... | 10/19/2004 |
| 6805758 | Yttrium modified amorphous alloy An amorphous alloy having a composition consisting essentially of about 45 to about 65 atomic % Zr and/or Hf, about 4 to about 7.5 atomic % Ti and/or Nb, about 5 to about 15 atomic % Al and/or Zn, and the balance comprising a metal selected from the group consisting... | 10/19/2004 |
| 6793966 | Chemical vapor deposition apparatus and method Chemical vapor deposition apparatus and method are provided with external metal halide gas generators that reduce leakage of air into the generators so as to improve efficiency of use of the metal charge residing in each generator. ... | 09/21/2004 |
| 6789604 | Fugitive patterns for investment casting A fugitive pattern of an article to be investment cast wherein the pattern includes a plurality of locator embossments disposed in an array to provide a datum reference system by which the pattern can be held and positioned by a manipulator, such as for example a gr... | 09/14/2004 |
| 6749006 | Method of making investment casting molds A method of forming a ceramic investment shell mold about a fugitive wax pattern of an article comprises coating the pattern with ceramic slurry, applying a ceramic particulate material heated above ambient temperature to the slurry layer, drying the ceramic slurry ... | 06/15/2004 |
| 6719036 | Fugitive patterns for investment casting A fugitive pattern of an article to be investment cast wherein the pattern includes a plurality of locator embossments disposed in an array to provide a datum reference system by which the pattern can be held and positioned by a manipulator, such as for example a gr... | 04/13/2004 |
| 6152456 | Cylinder head gasket In a cylinder head gasket with a gasket plate comprising at least three metallic plate layers superimposed one upon the other and at least one combustion chamber hole, with a beaded plate layer arranged on either side of an inner plate layer, each of the ... | 11/28/2000 |
| 6136451 | Platinum modified aluminide diffusion coating and method A method of improving oxidation resistance of a platinum modified aluminide diffusion coating on a substrate involves electroplating the substrate with a platinum layer from an aqueous hydroxide based electroplating solution and aluminizing the substrate ... | 10/24/2000 |
| 6132520 | Removal of thermal barrier coatings A gas turbine engine component having a thermal barrier coating is immersed in an inorganic hydroxide bath having a high concentration of alkali or alkaline earth hydroxide with the bath at ambient (atmospheric) pressure and elevated temperature for a tim... | 10/17/2000 |
| 6129991 | Aluminide/MCrAlY coating system for superalloys High temperature oxidation resistance of an aluminide diffusion overcoated MCrAlY coating system is substantially improved by CVD over-aluminizing the MCrAlY type overlay coating under CVD conditions that result in reduced concentrations of such tramp imp... | 10/10/2000 |
| 6120624 | Nickel base superalloy preweld heat treatment A preweld heat treatment for precipitation hardenable IN939 nickel base superalloy having a gamma matrix and gamma prime strengthening phase dispersed in the matrix comprises heating the nickel base superalloy at about 2120 degrees F. for a time to soluti... | 09/19/2000 |
| 6109300 | Proportional variable force solenoid control valve and transmission fluid control device A fluid control device for an electronic transmission is provided and includes a transmission spool valve and a proportional variable force solenoid valve disposed in a common housing for controlling the pressure of a fluid supplied to a first end of the ... | 08/29/2000 |
| 6072568 | Thermal barrier coating stress measurement A non-destructive measurement method for determining residual stress proximate an intermediate layer in a multilayer thermal barrier coating system by directing a laser beam through an outer ceramic thermal insulating layer with the laser beam illuminatin... | 06/06/2000 |
| 6070644 | Investment casting using pressure cap sealable on gas permeable investment mold A gas permeable ceramic investment mold is disposed in a casting chamber and filled with melt to be solidified via a mold melt inlet, such as for example a mold pour cup adapted to receive the melt from a melting crucible in the casting chamber. After the... | 06/06/2000 |
| 6029736 | Reinforced quartz cores for directional solidification casting processes A reinforced core for use in metal casting processes, especially directional solidification casting processes, comprises an elongated, thin-walled outer quartz or silica rich tubular member and a carbon base reinforcement disposed in and extending along a... | 02/29/2000 |
| 6019158 | Investment casting using pour cup reservoir with inverted melt feed gate A ceramic investment mold is disposed in a casting chamber and communicates with a pour cup melt reservoir connected to the mold and having a reservoir volume for holding enough melt to fill the mold. The melt pour cup reservoir is communicated to the mol... | 02/01/2000 |
| 6004368 | Melting of reactive metallic materials Method and apparatus for melting reactive metallic materials, such as for example titanium base alloys and other reactive alloys, by selective and sequential induction heating of a plurality of solid alloy charge components segregated in a refractory melt... | 12/21/1999 |
| 5984259 | Proportional variable force solenoid control valve with armature damping Proportional variable force solenoid valve for controlling the pressure of a fluid in a fluid control system comprises a solenoid housing having therein a solenoid coil, an armature movable in response to electrical current applied to the solenoid coil, a... | 11/16/1999 |
| 5977007 | Erbia-bearing core A ceramic core that includes, prior to core sintering, erbia filler material alone or admixed with a second ceramic filler material, such as alumina, and a binder to provide a core that is relatively non-reactive with superalloys used in the manufacture o... | 11/02/1999 |
| 5931214 | Mold heating vacuum casting furnace Mold heating vacuum casting furnace system comprising a mold preheating chamber located above and connected to a vacuum casting chamber via an intermediate isolation valve. A mold elevator is provided in the casting chamber and can be moved into the mold ... | 08/03/1999 |
| 5921526 | Proportional variable force solenoid control valve and transmission fluid control device A proportional variable force solenoid valve for controlling the pressure of a pressurized fluid in a fluid control system in proportion to the current level of an electrical input signal comprises a movable valve for controlling the pressure of pressuriz... | 07/13/1999 |
| 5922628 | Low temperature joining of ceramic composites A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bo... | 07/13/1999 |
| 5915452 | Apparatus for removing cores from castings Apparatus for removing a ceramic core from a casting in a relatively rapid manner wherein the casting and a fluid spray nozzle are disposed in a manner to expose a region of the core to a core dissolving fluid discharge of the nozzle and a core dissolving... | 06/29/1999 |
| 5913354 | Removal of ceramic shell mold material from castings Method for removing ceramic shell mold material from one or more castings in a relatively rapid manner wherein the casting and hot caustic solution spray nozzles are relatively moved to direct hot caustic solution under pressure at the castings to remove ... | 06/22/1999 |
| 5887449 | Dual stage active magnetic regenerator and method A dual stage active magnetic regenerator refrigerator as well as method using the Joule-Brayton thermodynamic cycle includes a high temperature stage refrigerant comprising DyAl2 or (Dy1-x Erx)Al2 where x is sel... | 03/30/1999 |
| 5865909 | Boron modified molybdenum silicide and products A boron-modified molybdenum silicide material having the composition comprising about 80 to about 90 weight % Mo, about 10 to about 20 weight % Si, and about 0.1 to about 2 weight % B and a multiphase microstructure including Mo5 Si3... | 02/02/1999 |
| 5858470 | Small particle plasma spray apparatus, method and coated article A method of coating a surface using a plasma arc torch comprises directing a plasma plume externally from a discharge end of the plasma torch toward the surface, positioning a powder injector proximate the plasma plume to introduce ceramic oxide powder pa... | 01/12/1999 |
| 5858144 | Low temperature joining of ceramic composites A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bo... | 01/12/1999 |
| 5856027 | Thermal barrier coating system with intermediate phase bondcoat A thermal barrier protected nickel based or cobalt based superalloy component for use in a gas turbine engine includes a thermal barrier coating system having a multi-layered structure. The first bondcoat layer of the thermal barrier coating system compri... | 01/05/1999 |
| 5851317 | Composite material reinforced with atomized quasicrystalline particles and method of making same A composite material comprises an aluminum or aluminum alloy matrix having generally spherical, atomized quasicrystalline aluminum-transition metal alloy reinforcement particles disposed in the matrix to improve mechanical properties. A composite article ... | 12/22/1998 |
| 5845667 | Single stage variable force solenoid pressure regulating valve A pressure regulating variable force solenoid fluid control valve for regulating the pressure of a pressurized fluid in a fluid control system in proportion to the current level of an electrical input signal comprises a supply port for receiving pressuriz... | 12/08/1998 |
