Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 8172962 | Fixed constant velocity universal joint and method for manufacturing outer race thereof A fixed constant velocity universal joint includes an outer race having a spherical inner circumferential surface, the outer race including axially extending ball grooves formed in the spherical inner circumferential surface at regular circumferential intervals, and... | 05/08/2012 |
| 7976651 | Weldable steel of high strength and high toughness, and method of producing members using the same Disclosed are a weldable steel of high strength and high toughness and a method of producing members of machine parts. The steel consists essentially of, by weight %, C: 0.10-0.16%, Si: 0.05-0.50%, Mn: 1.3-2.3%, Cu: up to 0.5%, Ni: up to 0.5%, Cr: up to 0.5%, Mo: up... | 07/12/2011 |
| 7833363 | Method for producing high-strength forged parts having high reduction of area A high-strength forged part is disclosed which comprises a base phase structure, comprising 30% or more of ferrite in terms of a space factor, and a second phase structure, comprising bainite and/or martensite, and retained austenite having an average gain diameter ... | 11/16/2010 |
| 7354487 | Cooled and annealed bainite steel part, and a method of manufacturing it The invention provides a method of fabricating a steel part, the method comprising the steps of: preparing and casting a steel having the following composition in percentage by weight: 0.06%≦C≦0.25%; 0.5%≦Mn≦2%; traces≦Si... | 04/08/2008 |
| 7338138 | Link and producing method of the same A link has link connecting bores (15) and (16) at both ends thereof and a wear rail (13) disposed between the upper portions of the link connecting bores (15) and (16). Portions near the ends of the wear rail (13) are design... | 03/04/2008 |
| 7314532 | High-strength forged parts having high reduction of area and method for producing same A high-strength forged part is disclosed which comprises a base phase structure, comprising 30% or more of ferrite in terms of a space factor, and a second phase structure, comprising bainite and/or martensite, and retained austenite having an average grain diameter... | 01/01/2008 |
| 7090729 | Outer ring member for constant velocity joint and method of manufacturing the member An outer ring member for a constant velocity joint is manufactured. An intermediate preformed product having a cup section with an incomplete shape is formed by pressing a large diameter section without applying a low temperature annealing treatment and a lubricatin... | 08/15/2006 |
| 7083688 | High-strength race and method of producing the same The high-strength race of the present invention comprises using A steel for a high-strength race comprising the following elements in percentage by weight: C: 0.30 to 0.60%, Si: 0.30 to 1.30%, Mn: 0.5 to 1.5%, B: 0.0050% or less, Cr: 0.1 to 0.5%, Mo: 0.1 to 0.5%, Si... | 08/01/2006 |
| 7081174 | Process for producing steel products having improved grain size properties and machinability Disclosed is a production process of a steel product for induction hardening and a steel product for carburizing, having improved grain size properties and machinability. This production process comprises the steps of: providing an ingot or bloom comprising a steel ... | 07/25/2006 |
| 7048810 | Method of manufacturing hot formed high strength steel A method for processing a hot formed, high-tensile-strength steel having an ultimate tensile strength (UTS) of at least about 730 MPa (105 ksi) and excellent toughness to retain essentially all the strength and toughness is provided. This processing is needed for th... | 05/23/2006 |
| 7040080 | Track link production method and track link produced by the same There are proposed a track link production method capable of providing markedly improved wear life with good cost performance and a track link produced by this method. To this end, the track link production method includes a heat treatment process (Steps 4, 5... | 05/09/2006 |
| 7037388 | Steel plate for paint use and manufacturing method thereof A steel plate for paint use which contains C (0.12% or less), Si (1.0% or less), Mn (2.5% or less), P (0.05% or less), S (0.02% or less), and Cr (0.05% or less), Cu (0.05–3.0%), Ni (0.05–6.0%), Ti (0.025–0.15%), and Cu+Ni (0.50% or more), with PCM b... | 05/02/2006 |
| 7022195 | Method of manufacturing inner blade for electric razor An inner cutter for a dry shaver is fabricated from a metal plate to have a plurality of blades each provided with cutting edges. The metal plate includes a plurality of parallel straight slits to leave an array of straight beams each defined between the adjacent on... | 04/04/2006 |
| 7005017 | Steel for mechanical construction, method of hot-shaping of a part from this steel, and part thus obtained The invention relates to a steel for mechanical construction, wherein its composition in percentages by weight is: 0.35%≦C≦1.2%; 0.10%≦Mn≦2.0%; 0.10%≦Si≦3.0%; traces≦Cr≦4.5%; traces≦Mo≦2.0%; traces≦Ni≦4.5%; traces≦V≦0.5%; traces≦Cu≦3.... | 02/28/2006 |
| 6994758 | Steel for mechanical construction, method of hot-shaping of a part from this steel, and part thus obtained The invention relates to a steel for mechanical construction, wherein its composition in percentages by weight is: 0.35%≦C≦2.5%; 0.10%≦Mn≦2.5%; 0.60%≦Si≦3.0%; traces≦Cr≦4.5%; traces≦Mo≦2.0%; traces≦Ni≦4.5%; traces≦V≦0.5%; traces≦Cu≦4%... | 02/07/2006 |
| 6949151 | Method for producing a hardened sheet metal section The invention relates to a method for producing a hardened sheet metal section from a flat blank, wherein the flat blank is provided with collared holes that are collared and with two groove-like indentations which serve to support the sheet metal blank on a conveyo... | 09/27/2005 |
| 6946041 | Material for shadow mask, method for production thereof, shadow mask and image receiving tube A material for shadow mask having the following composition of components: C≦0.0008 wt %, Si≦0.03 wt %, Mn:0.1 to 0.5 wt %, P≦0.02 wt %, S≦0.02 wt %, Al:0.01 to 0.07 wt %, N≦0.0030 wt %, B: an amount satisfying the formula: 5 ppm≦B−11/14×N≦30 ppm, b... | 09/20/2005 |
| 6936119 | Method for producing metallic, non-rotationally symmetrical rings with a constant wall thickness over their circumference The invention is directed to a method and a device for producing metal, non-rotationally symmetric rings with a constant wall thickness along their circumference, particularly cam rings, starting from a hot-rolled pipe from which individual portions are severed, mec... | 08/30/2005 |
| 6878220 | Method of making a hardened sheet metal article In a method of making a hardened sheet metal article, at least one pot-shaped depression is formed in a sheet metal blank. Thereafter, the sheet metal blank is hot formed in a press mold to a sheet metal article, and the sheet metal article is hardened. The press mo... | 04/12/2005 |
| 6841014 | Method for manufacturing a striking plate of a golf club head A method for manufacturing a striking plate of a golf club head includes the steps of soft heat-treating a flat metal blank to increase its malleability, stamping out a striking plate with an integral wall and a bend portion from the flat metal blank, precise machin... | 01/11/2005 |
| 6743311 | Forging method The objective of the present invention is to provide a forging method that improves workability in machining, by turning the metallographical structure of products subject to impact load to a fine ferrite-perlite structure, without adopting the method of quenching a... | 06/01/2004 |
| 6656418 | Steel composition, method for making same and parts produced from said compositions, particularly valves This invention relates to a steel composition comprising, expressed in percentages by weight: 0.25-0.35% C, 24-28% Cr, 10-15% Ni, 3-6% Mn, 1.75-2.50% Nb, 0.50-0.70% N, 0-0.30% Si, provided that C+Nࣙ0.8%, the rest consisting mainly of iron and unavoidabl... | 12/02/2003 |
| 6605166 | Method for manufacturing high strength bolt excellent in resistance to delayed fracture and to relaxation A high-strength bolt having excellent delayed fracture resistance and stress relaxation resistance in addition to a tensile strength of 1200 N/mm2 or higher is disclosed. A steel material for the high-strength bolt includes C: 0.50 to 1.0% by m... | 08/12/2003 |
| 6478900 | Method of forging precipitation hardening type stainless steel An improved method of forging a precipitation hardening type stainless steel. The method comprises the steps of soaking the precipitation hardening type stainless steel at a temperature of austenitizing range, cooling the steel to a temperature in the ran... | 11/12/2002 |
| 6440237 | Process for forming cold formed high-load bearing steel parts A process for forming a roller bearing comprising the steps of providing a cylindrical slug that comprises at least 0.7 weight percent carbon and up to 1.6 weight percent of at least one alloying element. The slug has lateral and side surfaces. A centered... | 08/27/2002 |
| 6348112 | Method for manufacturing a trailer hitch assembly Disclosed is a method of making a trailer hitch assembly for use with automobiles, trucks and other vehicles. The trailer hitch assembly comprises a crossbeam assembly and a pair of side brackets disposed on opposite ends of the crossbeam assembly. The cr... | 02/19/2002 |
| 6221178 | Ultra-fine grain steel and method for producing it The invention provides an ultra-fine grain steel comprising fine ferrite grains as oriented at random and surrounded by large angle grain boundaries. The steel comprises fine ferrite grains having a mean grain size of not larger and 3.0 μm and surrounded... | 04/24/2001 |
| 6162307 | BN-precipitation-strengthened low-carbon-ferritic heat-resistant steel excellent in weldability This invention provides a ferritic heat-resistant steel that can improve HAZ softening resistance, can omit heat-treatment after welding and can reduce the construction cost of a power generation plant. This ferritic heat-resistant steel contains C: 0.01 ... | 12/19/2000 |
| 6123785 | Product and process for producing constant velocity joint having improved cold workability and strength The process for producing a constant velocity joint having improved cold workability, rolling fatigue life, and torsional strength comprises the steps of: rolling or forging an alloy at a heating temperature of Ac3 to 1000° C. with a reduction... | 09/26/2000 |
| 5993571 | Steel for machine structural use and machine parts made from such steel A steel for machine structural use, essentially having the following chemical composition: C: 0.45-0.60 wt %, Si: 0.50-2.00 wt %, Mn: 0.10-0.30 (0.30 not inclusive) wt %, P: 0.01-0.10 wt %, S: 0.01-0.20 wt %, V: 0.08-0.15 wt %, and N: 0.0020-0.0050 (0.0050 not incl... | 11/30/1999 |
| 5900081 | Computerized method for forging, quenching and tempering metal A CNC method for forging, quenching and tempering a metal material is composed of an automatic process of feeding a metal material, which is uniformly heated at a temperature of 1000° C. for about one minute by an induction coil and is subsequently forge... | 05/04/1999 |
| 5820706 | Process for manufacturing a forging Steel chemical composition of which contains, by weight: 0.1%ࣘCࣘ0.4%; 1%ࣘMnࣘ1.8%; 0.15%ࣘSiࣘ1.7%; 0%ࣘNiࣘ1%; 0%ࣘCrࣘ1.2%; 0%ࣘMoࣘ0.3%; 0%ࣘVࣘ0.3%; Cuࣘ0.35%; optionally from 0.005% to 0.06% of aluminum, optionally boron i... | 10/13/1998 |
| 5762725 | Steel for the manufacture of forging having a bainitic structure and process for manufacturing a forging Steel for the manufacture of forgings having a bainitic structure and the mechanical properties of which are: Rp0.2 ࣙ800 MPa, Rm ࣙ1000 MPa, Kcu ࣙ50 J/cm2 its chemical composition comprising, by weight: 0.0... | 06/09/1998 |
| 5716468 | Process for producing high-and low-pressure integral-type turbine rotor A rotor forging composed of Cr--Mo--V type alloy based on iron is normalizing-treated at a temperature of from 1000 to 1150° C., the temperature is maintained at 650°-750° C. on the way of cooling the temperature from the normalizing-treating temperatu... | 02/10/1998 |
| 5660648 | Microalloyed steel for hot forging free of subsequent quenching and tempering, process for producing hot forging, and a hot forging The present invention provides a steel material for a microalloyed part having a high strength in a hot worked state. A microalloyed steel for a high strength hot forging comprising specified amounts of C, Si, Mn, Cr, S, V and N, and Al and/or Ti, having ... | 08/26/1997 |
| 5601667 | Process for producing hot forged steel having excellent fatigue strength, yield strength, and machinability A process for producing a hot forged steel of ferrite+bainite structure type which is characterized by: applying hot forging to a steel product of a composition by weight of C: 0.10-0.35%, Si: 0.15-2.00%, Mn: 0.40-2.00%, S: 0.03-0.10%, Al: 0.0005-0.050%, Ti: 0... | 02/11/1997 |
| 5569338 | Steam turbine rotor shaft thereof and heat resisting steel The present invention relates to a steam turbine comprising a rotor shaft integrating high and low pressure portions provided with blades at the final stage thereof having a length not less than 30 inches, wherein a steam temperature at first stage blades... | 10/29/1996 |
| 5534085 | Low temperature forging process for Fe-Ni-Co low expansion alloys and product thereof A method of treating low-expansion Fe--Ni--Co superalloys is disclosed in which the alloys are forged at a temperature below the recrystallization temperature and then recrystallized without the use of intervening annealing steps. It is necessary that the... | 07/09/1996 |
| 5527400 | Method and apparatus for machining hardened parts apparatus for machining hardened parts A method and apparatus for machining a workpiece from a hardened unmachined part includes the use of non-rotating centers in a turning machine, on which the workpiece is mounted. The shape of the dead centers permits less force to be used in support of th... | 06/18/1996 |
| 5500058 | Method for producing a vehicular endless track link The present invention relates to a method for producing a link of a vehicular endless track. According to this method, low-carbon boron steel is selected as a starting material for producing the link. The present invention involves the steps of forging an... | 03/19/1996 |
