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| Number | Title | Issue Date |
| 7431779 | Ultrasonic impact machining of body surfaces to correct defects and strengthen work surfaces Metallic workpieces of diverse shapes having work surfaces which are deformed at the surface and adjacent sub-surface layers by surface impact from ultrasonic transducers employing freely axially moving impacting elements propelled and energized by a transducer osci... | 10/07/2008 |
| 7041181 | Coated steel part with regions of different ductility A hardenable steel workpiece having two regions is first hardened so that both regions are of generally the same low ductility. Then only one of the regions is hot coated so as to increase the ductility of the one region while not heating and changing the ductility ... | 05/09/2006 |
| 6994916 | Friction stir grain refinement of structural members The present invention provides an improved structural assembly constructed of a plurality of structural members secured together. At least one of the plurality of structural members defines a first region characterized by comparatively high operational stress and a ... | 02/07/2006 |
| 6974633 | Structural members having improved resistance to fatigue crack growth An extruded structural member having improved damage tolerance containing a base section (6); a stiffening section having at least one pair of structural stiffeners (10), the structural stiffeners integral with the base section (6) and projectin... | 12/13/2005 |
| 6887590 | Galvannealed metal sheet and method for manufacture of such metal sheet The present invention relates to a method for the manufacture of galvannealed metal sheet, wherein a hot strip is produced from an IF steel containing 0.01 to 0.1 wt. % silicon, wherein the hot strip is coiled at a coiler temperature no lower than 700° C. and no hi... | 05/03/2005 |
| 6881498 | Surface process involving isotropic superfinishing A surface processing method and power transmission component includes refining a surface region of a metal from a first roughness to a second roughness less than the first roughness. A solid lubricous coating or a hard coating is then deposited on the surface region... | 04/19/2005 |
| 6793743 | Vehicle structural beam and method of manufacture A vehicle structural beam, such as a door intrusion beam, which possesses an elongate tubular beam part which at opposite ends is provided with mounting flanges for securement to a vehicle frame. The elongate tubular beam part and the flanges provided at opposite en... | 09/21/2004 |
| 6737175 | Metal dusting resistant copper based alloy surfaces A method for inhibiting metal dusting corrosion of surfaces exposed to supersaturated carbon environments comprising constructing said surfaces of, or coating said surfaces with a copper based alloy. The invention is also directed to a composition resistant to metal... | 05/18/2004 |
| 6677037 | Laser shock peening tape, method and article An ablative tape is applied onto a substrate surface. The ablative tape comprises an ablative medium comprising a polymer and dispersed metallic component. The tape is then irradiated to ablate the ablative medium. An article comprises a substrate and the... | 01/13/2004 |
| 6673167 | Power transmission shaft The power transmission shaft 12 is made by applying induction hardening to carbon steel with hardening ratio in a range from 0.25 to 0.50. For the carbon steel, one containing 0.39 to 0.49% of C, 0.4 to 1.5% of Si, 0.4 to 1.0% of Mn, 0.025% or less S, 0.0... | 01/06/2004 |
| 6670048 | Sintered sprocket A sintered sprocket is provided in which surface pressure resistance can be improved without using a forging processing. An Fe-based sintered alloy which contains C at 0.2 to 0.5% by weight, Mo at 0.2 to 1.0% by weight, and Ni at 0.2 to 1.0% by weight, an... | 12/30/2003 |
| 6660110 | Heat treatment devices and method of operation thereof to produce dual microstructure superalloy disks A heat treatment assembly and heat treatment methods are disclosed for producing different microstructures in the bore and rim portions of nickel-based superalloy disks, particularly suited for gas turbine applications. The heat treatment assembly is capa... | 12/09/2003 |
| 6555247 | Aluminum alloy plate for planographic printing plate An aluminum alloy plate for a planographic printing plate capable of being provided with a satisfactory roughed surface by electrolytic etching. The aluminum alloy plate contains 0.1 to 0.6% of Fe, 0.01 to 0.2% of Si, 5 to 150 ppm of Cu, and balance of Al... | 04/29/2003 |
| 6524404 | B-column for motor vehicle A B-column comprises a component of a car body for a motor vehicle. The B-column constitutes a longitudinal steel profile. The invention provides that the longitudinal profile has a first longitudinal portion comprised of a martensitic material structure ... | 02/25/2003 |
| 6517645 | Valve metal compositions and method Valve metal articles such as wire, sheet or powder having a second metal, preferably in a peripheral margin, prepared by coating the valve metal with a salt solution of the metal additive and heat treating in the presence of an oxygen getter to remove the... | 02/11/2003 |
| 6511559 | Process for producing wear-resistant edge layers in precipitation-hardenable materials A process for producing wear-resistant edge layers in precipitation-hardenable materials wherein a component that was conventionally solution annealed and subsequently subjected to a conventional aging heat treatment is subjected to another short-time ... | 01/28/2003 |
| 6478896 | Differentially heat treated article, and apparatus and process for the manufacture thereof A turbine disk for a gas turbine engine differentially heat treated so as to produce a dual property disk. The process is applicable to superalloy disks, and achieves substantially uniform yet different temperatures in the rim and hub of the disk during h... | 11/12/2002 |
| 6436555 | Zinc-comprising-plated high tension steel sheet The high tension steel sheet includes 0.1 wt % or more of silicon and has a zinc-plating layer thereon. When sputtering analysis is performed in the depth direction from the surface of the high tension steel sheet after the zinc-comprising-plating layer i... | 08/20/2002 |
| 6428910 | Nb-based silicide composite compositions A refractory metal intermetallic composition comprising titanium (Ti), hafnium (Hf), silicon (Si), aluminum (Al), chromium (Cr), germanium (Ge), tin (Sn), iron (Fe), and a balance of niobium (Nb) for use in composite structures having applications in turb... | 08/06/2002 |
| 6398881 | Wear-resistant camshaft and method of producing the same The invention concerns a wear-resistant camshaft and a method of producing the same. Objects in which the application of the invention is possible and useful are all cast-iron parts which are subject to wear as a result of lubricated friction. The wear-re... | 06/04/2002 |
| 6398883 | Friction stir grain refinement of structural members The present invention provides an improved structural assembly constructed of a plurality of structural members secured together. At least one of the plurality of structural members defines a first region characterized by comparatively high operational st... | 06/04/2002 |
| 6355119 | Heat treatment method for producing boundary-layer hardened long products and flat products of unalloyed or low-alloy steel In a heat treatment method for producing boundary layer-hardened long products and flat products of unalloyed or low-alloy steel, the workpiece is cooled for producing a martensitic grain within a boundary layer of the workpiece by repeating several seque... | 03/12/2002 |
| 6337145 | Multilayer material for sliding elements and process for the production thereof A process for the production of sliding elements in which an overlay of lead-tin-copper is applied by electroplating to the prefabricated semi-finished product, and in which a ternary, fluoroborate-free electroplating bath is used without brighteners and ... | 01/08/2002 |
| 6287399 | Metallic article resistant to buckling Disclosed is an elongated metallic article having a curved section therein which has a first part formed on an outside part of the curved section, and a second part formed on an inside part of the curved section. The first part was initially deformed beyo... | 09/11/2001 |
| 6224693 | Method and apparatus for simplified production of heat treatable aluminum alloy castings with artificial self-aging Simplified heat-treatment in making aluminum alloys castings of the type improved by aging, especially for automotive engine cylinder heads and motor blocks. The castings, after solidification and extraction from their molds, each have an end product (wor... | 05/01/2001 |
| 6221515 | Bimetallic strip for a sliding bearing and process for producing said bimetallic strip A bimetallic strip for a sliding bearing having a sliding strip of an aluminum alloy which is adhered to a steel supporting strip and method of manufacture. The composition of the sliding strip is from 3 to 30% of tin; from 1 to 6% of silicon and the rema... | 04/24/2001 |
| 6127044 | Method for producing titanium alloy turbine blades and titanium alloy turbine blades A method for producing titanium alloy turbine blades comprising the steps of (a) forming turbine blades of titanium alloy through hot forging or machining, (b) cooling leading edges on tip portions of the turbine blades including covers thereof formed thr... | 10/03/2000 |
| 6074765 | Grinding rod chemistry and method of heat treatment to enhance wearability A grinding rod chemistry enhances wearability and durability of a steel rod and comprises levels of carbon to achieve a surface hardness in excess of 55 Rockwell C and levels of chromium which achieve significant depth in the formed outer martensite shell... | 06/13/2000 |
| 6063509 | Reinforcing component of which the basic material is austenitic cast iron In a reinforcing component made from austenitic iron which is bonded intermetallically with an engine component made from an aluminium-base alloy, in particular a piston, the aim is to improve the strength of the bond irrespective of the graphite configur... | 05/16/2000 |
| 6059898 | Induction hardening of heat treated gear teeth Induction hardening of heat treated gear teeth which includes the steps of rough and finish cutting the gear teeth, or alternatively cutting the gear teeth to their final configuration utilizing a one cut method, carburizing the gear and in particular, th... | 05/09/2000 |
| 6013140 | Laser hardening of screw forms A harden screw form and methods of making same for use with, for example, positive displacement rotary axial screw pumps are disclosed. The methods include the use of a CNC machine with a laser and a special, newly developed optic for selectively hardenin... | 01/11/2000 |
| 5972135 | Stress relieved grinding rod having hard outer shell A grinding rod having a hardened outer shell of tempered martensite is adapted for use in heavy duty grinding environments. The rod is stress relieved to reduce internal compressive stresses in the tempered martensitic shell to less than 60 ksi and greate... | 10/26/1999 |
| 5902423 | Heat treatment of grinding rod A process for heat treating a steel bar to produce a grinding rod having a softer core of at least 99% pearlite and having a hardness of less than 45 Rockwell C, an outer shell of martensite having a hardness of at least 50 Rockwell C and softer end porti... | 05/11/1999 |
| 5881594 | Method and apparatus for imparting strength to a material using sliding loads A method of enhancing the strength of metals by affecting subsurface zones developed during the application of large sliding loads. Stresses which develop locally within the near surface zone can be many times larger than those predicted from the applied ... | 03/16/1999 |
| 5876523 | Method of producing spheroidal graphite cast iron article A method of producing a spheroidal graphite cast iron article containing at least one pearlite stabilizing element selected from the group consisting of Mn, Cu, Sn, Sb and Pb and having a double layer structure which comprises a surface layer portion and ... | 03/02/1999 |
| 5833777 | Base plate for suspension assembly in a hard disk drive with a hardened flange and soft hub A base plate for a suspension assembly in a hard disk drive wherein the base plate has a hardened flange and soft hub. The base plate is stamped in a progressive die in a sequence of forging and coining operations. The base plate is subsequently fully ann... | 11/10/1998 |
| 5821000 | Composite magnetic member and process for producing the member A composite magnetic member formed of a single material having a ferromagnetic section with high soft magnetism and a non-magnetic or the like section with sufficiently low magnetic (feebly magnetized or non-magnetic) and sufficient low MS temperature and... | 10/13/1998 |
| 5800641 | Method of thermal or thermochemical treatment of precision steel components A method of thermal or thermochemical treatment of precision steel components having different wall thicknesses comprising the steps of a) hardening (8), b) low temperature cooling (9) and c) annealing (10), wherein the precision steel components are subj... | 09/01/1998 |
| 5753053 | Fatigue-resistant hollow articles A hollow article is made by providing and diffusion bonding the opposing parts of an article made of an alpha-beta titanium alloy. Hydrogen is introduced into the surface of an internal cavity before, during, or after diffusion bonding. The article is hea... | 05/19/1998 |
| 5728475 | Method for making parts usable in a fuel environment A piston shoe (10) of an axial piston pump or motor is crimped to an annular piston head (42) and has a flat shoe wear surface (12) that contacts a cam plate (22). A back flange (14) of the shoe (10) also wears against an auxilliary cam plate (24). In ord... | 03/17/1998 |
