Quotables
"The radio craze will die out in time."
Thomas Edison ; 1922
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7828917 | Rail manufacturing method A rail manufacturing method is provided, in which a billet is hot-rolled into a rail form and the rail is cooled to ambient temperature. The foot part of the rail can be mechanically restrained to improve the straightness of the rail during at least the period of co... | 11/09/2010 |
| 7416622 | Method and system for thermal treatment of rails In order to obtain a fine-lamellar perlite structure in the edge region of the heads of rails (1), especially hot-rolled rails for carriageways or railways, by specific thermal treatment during cooling from the rolling heat without the formation of bainite, p... | 08/26/2008 |
| 7288159 | High impact and wear resistant steel An improved steel railroad rail, and methods for producing same, having a high-carbon content in a range from more than 0.9 to 1.1 wt % is provided that has increased wear resistance and increased fracture toughness over conventional steel rail. The high-carbon rail... | 10/30/2007 |
| 7217329 | Carbon-titanium steel rail An improved steel railroad rail, and methods for producing same, having a carbon content in a range from 0.7 to 0.95 wt % and titanium in the range of 0.005 to 0.105 wt % is provided that has increased wear resistance and increased fracture toughness over convention... | 05/15/2007 |
| 7181844 | Method for increasing structural strength of spokes of a bicycle or a motorcycle A method for increasing structural strength of spokes of a bicycle or a motorcycle, which adopts a mechanically processing measure to increase the structural strength of the bending section of the spoke. The spoke is many times compressed to process and harden the b... | 02/27/2007 |
| 7143499 | Method and installation for producing metal strips and sheets The invention relates to a method for producing metal strips and sheets involving the following method steps: pouring a strand, which is provided in the form (1) of thin slabs and which is comprised of carbon steel or special steel, into a casting machine ( | 12/05/2006 |
| 7080539 | Forged knurled socket housing and method of manufacture A method for manufacturing a cartridge-type housing for a ball and socket joint in a vehicular suspension system comprises the steps of inserting a housing blank into a forging tool die, expanding the housing blank within the forging tool die using a forging tool pu... | 07/25/2006 |
| 7032809 | Seam-welded metal pipe and method of making the same without seam anneal An apparatus and method for making a seam-welded steel pipe free of untempered martensite without seam anneal. The method includes selecting a steel containing a carbon concentration below a predetermined level, for example, 0.14% or 0.12% by weight. The method also... | 04/25/2006 |
| 6978546 | Method for producing ring members involving use of a rotatably driven mandrel A method for producing ring members, such as rings for rolling bearings, through use of a rolling operation involves warming a ring blank, positioning the warmed ring blank over a mandrel which is rotatable about a first axis, and positioning a forming roll rotatabl... | 12/27/2005 |
| 6315844 | Method for producing high-strength track element and track element thus obtained The invention relates to a high-strength steel track element, and process of making the steel track element by rolling and heat treating. The steel comprises: 0.3-0.6% C, 0.8-1.5% Si, 0.7-1.0% Mn, 0.9-1.4% Cr, 0.6-1.0% Mo, balance iron and smelting-relate... | 11/13/2001 |
| 6224694 | Method for heat-treating profiled rolling stock Method for heat-treating profiled rolling stock, including track and railroad rails, having a profiled surface and increased heat removal from portions of the profiled surface during cooling in the gamma range of an iron based alloy material. The method i... | 05/01/2001 |
| 5830286 | Steel rail having excellent wear resistance and internal breakage resistance, and method of producing the same This invention provides a steel rail having wear resistance and internal breakage resistance required for a heavy load railway, containing, in terms of percent by weight, more than 0.85 to 1.20% of C, 0.10 to 1.00% of Si, 0.40 to 1.50% of Mn, 0.0005 to 0.... | 11/03/1998 |
| 5759299 | Rail having excellent resistance to rolling fatigue damage and rail having excellent toughness and wear resistance and method of manufacturing the same A high-abrasion bainite rail excellent in resistance to rolling fatigue and failure, consisting essentially of 0.15 to 0.55 wt. % of C, 0.05 to 1.0 wt. % of Si, 0.1 to 2.5 wt. % of Mn, 0.03 wt. % or less of P, 0.03 wt. % or less of S, 0.1 to 3.0 wt. % of ... | 06/02/1998 |
| 5711914 | Rail steel The properties of conventional steels for rails, check rails and railroad rolling components can be improved by small amounts of tellurium. This applies particularly to the wear resistance and the mechanical properties in the transverse direction and at o... | 01/27/1998 |
| 5658400 | Rails of pearlitic steel with high wear resistance and toughness and their manufacturing methods High-carbon pearlitic steel rails have high strength, wear resistance, ductility and toughness are manufactured by applying special rolling to produce fine-grained pearlite blocks in steels containing 0.60 to 1.20% carbon, 0.10 to 1.20 % silicon, 0.40 to ... | 08/19/1997 |
| 5538566 | Warm forming high strength steel parts High strength steel parts and method of making are disclosed by providing a blank of high-strength steel material having a tensile strength of at least about 120,000 psi and a yield strength of at least about 90,000 psi and warm forming the blank to provi... | 07/23/1996 |
| 5482576 | Railway-track elements and method of manufacturing them A railway-track element is disclosed not only for normal track but also for rail points. The track element is formed of vacuum-treated steel containing at least 0.53 to 0.62% C, 0.65 to 1.1% Mn, 0.8 to 1.3% Cr, 0.05 to 0.11% Mo, 0.05 to 0.11% V and ࣘ0.0... | 01/09/1996 |
| 5382307 | Process for manufacturing high-strength bainitic steel rails with excellent rolling-contact fatigue resistance A process for manufacturing high-strength bainitic steel rails with an excellent rolling-contact fatigue resistance comprising the steps of hot rolling steel containing 0.15% to 0.45% carbon, 0.15% to 2.00% silicon, 0.30% to 2.00% manganese, 0.50% to 3.00... | 01/17/1995 |
| 5328531 | Process for the manufacture of components in treated steel Process for the manufacture of components from untreated steel, comprising a series of heat treatment and forming operations, characterised by heating the steel to a temperature above the transition point (austenizing), isothermal quenching in a fluidized... | 07/12/1994 |
| 5250126 | Method for manufacturing a rail for use in a linear motion rolling contact guide unit A method for manufacturing a rail for use in a linear motion rolling contact guide unit is provided. A rail intermediate product having a top surface, a pair of side surfaces, each formed with a guide groove portion, and a bottom surface is provided by dr... | 10/05/1993 |
| 4933024 | Method for manufacturing a high strength rail with good toughness A method for manufacturing a high strength rail with good toughness, comprises cooling a rail to Ar3 transformation point or less after hot rolling; heating said cooled rail at a temperature of an austenite temperature zone ranging from Ac... | 06/12/1990 |
| 4895605 | Method for the manufacture of hardened railroad rails An improved method for the manufacture of hardened railroad rails comprises the steps of forming a railroad rail from an alloy steel of a preselected chemical composition, force cooling the rail from a preselected cooling start temperature above about the... | 01/23/1990 |
| 4668308 | Method and apparatus for manufacturing rails At the exit from the hot rolling mill the rail temperature is reduced to a value not less than that at which the pearlite transformation begins in the rail head. From this temperature the continuously advancing rail is subjected to rapid cooling in a rapi... | 05/26/1987 |
| 4659398 | Method for reducing internal stresses of roller straightened rails The present invention relates to a process for reducing internal stresses of roller straightened rails. After the straightening operation the rail web portion is heated for a short time to temperatures ranging between 200°-700° C., preferably between 35... | 04/21/1987 |
| 4575397 | Rail having high resistance to wear in its head and high resistance to rupture in its foot The invention relates to a rail having high resistance to wear in its head and high resistance to rupture in its foot. It is the characteristic feature of the invention that after rolling followed by heat treatment the rail has a fine pearlitic structure ... | 03/11/1986 |
| 4486243 | Method of manufacturing rails At the outlet of a hot rolling mill the temperature of a hot rolled rail is reduced to a value not lower than that at which the pearlitic transformation begins in the rail head. The continuously moving rail is then rapidly cooled to below 650° C. so that... | 12/04/1984 |
| 4375995 | Method for manufacturing high strength rail of excellent weldability A method for manufacturing high strength rail having excellent weldability comprises subjecting a steel rail of specific composition to specific heat treatment conditions at the surface layer portion of the head thereof, to impart high strength to the rai... | 03/08/1983 |
| 4201602 | Rail hardening machine and method A technique for heat treating the upper surface of the head of an in situ rail is disclosed. A car carrying an induction heater followed by an air quencher and then an air and water quencher is passed along the track. In this way the upper surface of the ... | 05/06/1980 |
