Patents by Inventor Wilhelm Heller
Wilhelm Heller has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 5711914Abstract: 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 oxygen contents of less than 0.0015% and sulfur contents up to 0.007%.Type: GrantFiled: November 18, 1994Date of Patent: January 27, 1998Assignee: NMH Stahwerke GmbHInventor: Wilhelm Heller
-
Patent number: 5482576Abstract: 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 .ltoreq.0.02% P, the balance being iron plus the usual production-related impurities. The track element is in the form of a rail made of rolled pearlitic steel. If the track element is to be used for points, the starting material is a length of rolled rail with a martensitic structure produced by heat treatment at least in the rail head area.Type: GrantFiled: July 8, 1994Date of Patent: January 9, 1996Assignee: BWG Butzbacher Weichenbau, GmbHInventors: Wilhelm Heller, Gerhard Ratz
-
Patent number: 4714500Abstract: The present invention relates to a method for thermal treatment of pearlitic rail steel. For increasing strength and wear resistance steels with the claimed composition are produced with a fine lamellar pearlite structure by heat treatment. During the first cycle the rail head portion is heated in a sufficient depth of up to 50 mm by means of a burner or an inductive system to an austenitization temperature of about 950.degree. to 1050.degree. C. Thereafter the heated head portion is cooled by means of compressed air in such a way that in a first step by blowing a large amount of air the temperature of the rail head portion is cooled within 10 to 20 s to 650.degree. to 600.degree. C. before the area of the pearlitic transformation. In a second step with throttled blowing compared to the first step in the area of the pearlitic transformation the rail head portion is cooled within 2 to 4 minutes to about 400.degree. C. until finishing the pearlitic transformation.Type: GrantFiled: December 2, 1985Date of Patent: December 22, 1987Assignee: Krupp Stahl AGInventors: Wilhelm Heller, Jurgen Flugge, Gerhard Ratz
-
Patent number: 4659398Abstract: 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.degree.-700.degree. C., preferably between 350.degree.-500.degree. C., and after reaching the desired temperatures the rail is cooled by air to room temperature. For the purpose of heating the rail is continuously conveyed in front of the heating apparatus.The inventive process permits to reduce internal stresses in the rail head and base portions to a value of less than 50 N/mm.sup.2 thus ensuring increased rupture strength of the rail.Type: GrantFiled: January 14, 1986Date of Patent: April 21, 1987Assignee: Krupp Stahl AktiengesellschaftInventors: Wilhelm Heller, Lutz Weber, Reinhard Schweitzer, Jurgen Flugge
-
Patent number: 4575397Abstract: 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 in the head and a martensitic annealed grain structure in the foot. The invention also includes preferred methods of heat treatment for the rail.Type: GrantFiled: October 1, 1984Date of Patent: March 11, 1986Assignee: Krupp Stahl AktiengesellschaftInventor: Wilhelm Heller
-
Patent number: 4230488Abstract: Abrasion resistant rails or rail wheels formed from a steel alloy having between 0.02 to 0.35 percent by weight of lead or bismuth, and a process for the production of the same comprising alloying 0.02 to 0.35 percent by weight of lead or bismuth with a rail or rail wheel steel.Type: GrantFiled: June 30, 1978Date of Patent: October 28, 1980Assignee: Fried. Krupp Huttenwerke AGInventors: Wilhelm Heller, Walter Knoor, Reinhard Schweitzer
-
Patent number: 4203546Abstract: An oscillation dampening system composed of masses, in which a spring and dampeners are clamped together and coupled to a railroad track to prevent the formation of ripples on the track. The system is tuned to the characteristic frequency of the railroad track and is coupled thereto to reduce the maximum amplitude of oscillation at the characteristic frequency and to shift the occurrence of other amplitudes of oscillation to frequencies away from the characteristic frequency and to reduce the amplitudes of oscillation at the shifted frequency. The maximum of the shifted amplitudes of oscillation is reduced by ten percent from the maximum at the characteristic frequency.Type: GrantFiled: December 20, 1977Date of Patent: May 20, 1980Assignee: Fried. Krupp Huttenwerke AGInventors: Erwin Raquet, Gerhard Tacke, Wilhelm Heller
-
Patent number: 4082577Abstract: A process for the heat treatment of a steel rail which is at a temperature which is in the austenite range which comprises quenching at least the head portion of said rail in water maintained at a temperature of at least 80.degree. C until the temperature of said rail is such that said rail has completed the pearlite transformation and recovering a rail whose steel composition is characterized by such a fine pearlitic structure that it cannot be resolved by a light microscope but is not bainitic in structure.Type: GrantFiled: August 14, 1975Date of Patent: April 4, 1978Assignee: Fried. Krupp Huttenwerke AGInventor: Wilhelm Heller
-
Patent number: 4042273Abstract: A rail wheel comprising a wheel rim, wheel disc and a wheel hub wherein at least the wheel rim consists essentially of a steel having the following composition:0.04 to 0.12 weight percent carbon0.20 to 0.70 weight percent silicon3.5 to 5.0 weight percent mangangese0.005 to 0.025 weight percent nitrogen0.002 to 0.4 weight percent niobium = vanadium,The balance being iron with the usual impurities; a process for forming such rail wheel.Type: GrantFiled: May 20, 1975Date of Patent: August 16, 1977Assignee: Fried. Krupp Huttenwerke AGInventors: Wilhelm Heller, Walter Knorr
-
Patent number: 4008078Abstract: A low-carbon rail steel having a tensile strength of at least 900 N/mm.sup.2 and a yield point of at least 650 N/mm.sup.2 conmprising:0.07 to 0.12% carbon0.20 to 0.50% silicon4.00 to 5.00% manganese0.04 to 0.12% niobium0.007 to 0.012% nitrogen0.005 to 0.025% metallic aluminum,The balance being iron with the usual low impurities; a steel rail having the composition of such steel and a method for producing the steel rail.Type: GrantFiled: March 31, 1975Date of Patent: February 15, 1977Assignee: Fried. Krupp HuttenwerkeInventors: Jurgen Flugge, Wilhelm Heller