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: 5711914
    Abstract: 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: Grant
    Filed: November 18, 1994
    Date of Patent: January 27, 1998
    Assignee: NMH Stahwerke GmbH
    Inventor: Wilhelm Heller
  • Patent number: 5482576
    Abstract: 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: Grant
    Filed: July 8, 1994
    Date of Patent: January 9, 1996
    Assignee: BWG Butzbacher Weichenbau, GmbH
    Inventors: Wilhelm Heller, Gerhard Ratz
  • Patent number: 4714500
    Abstract: 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: Grant
    Filed: December 2, 1985
    Date of Patent: December 22, 1987
    Assignee: Krupp Stahl AG
    Inventors: Wilhelm Heller, Jurgen Flugge, Gerhard Ratz
  • Patent number: 4659398
    Abstract: 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: Grant
    Filed: January 14, 1986
    Date of Patent: April 21, 1987
    Assignee: Krupp Stahl Aktiengesellschaft
    Inventors: Wilhelm Heller, Lutz Weber, Reinhard Schweitzer, Jurgen Flugge
  • Patent number: 4575397
    Abstract: 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: Grant
    Filed: October 1, 1984
    Date of Patent: March 11, 1986
    Assignee: Krupp Stahl Aktiengesellschaft
    Inventor: Wilhelm Heller
  • Patent number: 4230488
    Abstract: 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: Grant
    Filed: June 30, 1978
    Date of Patent: October 28, 1980
    Assignee: Fried. Krupp Huttenwerke AG
    Inventors: Wilhelm Heller, Walter Knoor, Reinhard Schweitzer
  • Patent number: 4203546
    Abstract: 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: Grant
    Filed: December 20, 1977
    Date of Patent: May 20, 1980
    Assignee: Fried. Krupp Huttenwerke AG
    Inventors: Erwin Raquet, Gerhard Tacke, Wilhelm Heller
  • Patent number: 4082577
    Abstract: 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: Grant
    Filed: August 14, 1975
    Date of Patent: April 4, 1978
    Assignee: Fried. Krupp Huttenwerke AG
    Inventor: Wilhelm Heller
  • Patent number: 4042273
    Abstract: 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: Grant
    Filed: May 20, 1975
    Date of Patent: August 16, 1977
    Assignee: Fried. Krupp Huttenwerke AG
    Inventors: Wilhelm Heller, Walter Knorr
  • Patent number: 4008078
    Abstract: 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: Grant
    Filed: March 31, 1975
    Date of Patent: February 15, 1977
    Assignee: Fried. Krupp Huttenwerke
    Inventors: Jurgen Flugge, Wilhelm Heller