Patents by Inventor Hartwin Weber

Hartwin Weber 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: 8013743
    Abstract: Disclosed are markers for a magnetic theft protection system, which markers contain at least one oblong alarm strip made of an amorphous ferromagnetic alloy and at least one activation strip made of a molybdenum-free semi-hard magnetic alloy consisting essentially of NiaMbFeRest, wherein M is one or more of the elements from the group including Cr, W and V, and wherein a and b are weight percentages such that 15% by weight?a?25% by weight, and 2% by weight?b?8% by weight. The activation strip has a coercive force Hc of 10 A/cm to 25 A/cm and a remanence Br of at least 0.9 T.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: September 6, 2011
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Ottmar Roth, Hartwin Weber
  • Patent number: 7942981
    Abstract: A seamless, rotationally symmetrical hollow blank formed by a non-cutting operation from a deformable permanently magnetic alloy is provided, said alloy consisting essentially of 5.0 to 20.0 percent by weight cobalt, 20.0 to 35.0 percent by weight chromium, for the remainder iron and impurities caused by melting and/or by chance. The seamless hollow body is suitable in particular for use in hysteresis clutches, hysteresis brakes, and position measuring devices. Furthermore, non-cutting shaping processes for producing the seamless rotationally symmetrical hollow body are provided, with roller spinning being preferred.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: May 17, 2011
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Ottmar Roth, Hartwin Weber, Lutz Hinrich, Jens Diehl
  • Patent number: 7578893
    Abstract: A material for electrical contacts comprising a martensitic cobalt-nickel-iron alloy with a high strength, a high bendability and a high electrical conductivity, with a cobalt content of 12.0?Co?60.0% by weight, a nickel content of 10.0?Ni?36.0% by weight, remainder iron and an impurity content of less than 0.2 atomic percent, with a martensite temperature Ms of 75° C.?Ms?400° C. in the case of the martensitic variant and ?50° C.?Ms?25° C. in the case of the variant which is naturally hard as a result of cold-forming.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: August 25, 2009
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Hartwin Weber, Waldemar Döring, Matthias Schierling
  • Patent number: 7432815
    Abstract: Disclosed are a marker for a magnetic theft protection system, comprising: (a) at least one oblong alarm strip comprising an amorphous ferromagnetic alloy; and (b) at least one oblong activation strip comprising an alloy consisting essentially of formula NiaMobXcFeRest, wherein X is one or more of the elements from the group including Cr, W and V, and wherein a, b, and c are weight percentages, such that 15% by weight?a?25% by weight, 0% by weight?b?2.8% by weight, 0% by weight?c?8% by weight; and, wherein said activation strip has a coercitive force Hc of 10 A/cm to 25 A/cm and a remanence Br of at least 1.0 T; the activation strip itself, a tag containing the activation strip and/or marker, articles containing the marker or tag, methods for making the activation strip, and methods for making the marker.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: October 7, 2008
    Assignee: VACUUMSCHMELZE GmbH & Co. KG
    Inventors: Ottmar Roth, Hartwin Weber
  • Publication number: 20080160335
    Abstract: A seamless, rotationally symmetrical hollow blank formed by a non-cutting operation from a deformable permanently magnetic alloy is provided, said alloy consisting essentially of 5.0 to 20.0 percent by weight cobalt, 20.0 to 35.0 percent by weight chromium, for the remainder iron and impurities caused by melting and/or by chance. The seamless hollow body is suitable in particular for use in hysteresis clutches, hysteresis brakes, and position measuring devices. Furthermore, non-cutting shaping processes for producing the seamless rotationally symmetrical hollow body are provided, with roller spinning being preferred.
    Type: Application
    Filed: September 19, 2007
    Publication date: July 3, 2008
    Inventors: Ottmar Roth, Hartwin Weber, Lutz Hinrich, Jens Diehl
  • Publication number: 20080088451
    Abstract: Disclosed are markers for a magnetic theft protection system, which markers contain at least one oblong alarm strip made of an amorphous ferromagnetic alloy and at least one activation strip made of a molybdenum-free semi-hard magnetic alloy consisting essentially of NiaMbFeRest, wherein M is one or more of the elements from the group including Cr, W and V, and wherein a and b are weight percentages such that 15% by weight?a?25% by weight, and 2% by weight?b?8% by weight. The activation strip has a coercive force Hc of 10 A/cm to 25 A/cm and a remanence Br of at least 0.
    Type: Application
    Filed: September 7, 2007
    Publication date: April 17, 2008
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Ottmar Roth, Hartwin Weber
  • Publication number: 20080084308
    Abstract: Disclosed are a marker for a magnetic theft protection system, comprising: (a) at least one oblong alarm strip comprising an amorphous ferromagnetic alloy; and (b) at least one oblong activation strip comprising an alloy consisting essentially of formula NiaMobXcFeRest, wherein X is one or more of the elements from the group including Cr, W and V, and wherein a, b, and c are weight percentages, such that 15% by weight?a?25% by weight, 0% by weight?b?2.8% by weight, 0% by weight?c?8% by weight; and, wherein said activation strip has a coercitive force Hc of 10 A/cm to 25 A/cm and a remanence Br of at least 1.0 T; the activation strip itself, a tag containing the activation strip and/or marker, articles containing the marker or tag, methods for making the activation strip, and methods for making the marker.
    Type: Application
    Filed: October 1, 2007
    Publication date: April 10, 2008
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Ottmar Roth, Hartwin Weber
  • Patent number: 7230211
    Abstract: An electric heating element is provided with a durable PTC resistance made at least partially of an iron-based alloy, exhibiting stable characteristics to a temperature of 1500 DEG C. and having a resistance/temperature characteristic curve which substantially increases in a linear manner within a temperature range between an ambient temperature and 1500 DEG C. and can be used for a temperature control. The PCT resistance is provided with an oxidation resistant metallization or is gas-tightly enveloped by a jacket (2, 3, 12), a space between the jacket (2, 3, 12) and the PCT resistance (1,13) being filled with a powder or granules (14) which remove an important gas amount from the space.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: June 12, 2007
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Hartwin Weber, Waldemar Doering
  • Publication number: 20060128496
    Abstract: The invention concerns a golf club head whereof the strike surface zone at least is made of maraging steel essentially consisting of 6.0 to 9.0 wt. % of nickel, 11.0 to 15.0 wt. % of chromium, 0.1 to 0.3 wt. % of titanium, 0.2 to 0.3 wt. % of beryllium, the rest being iron and impurities resulting from production, the temperature of the martensitic phase being Ms?130 ° C. and the ferrite content being adjusted at CFerrit<3%. Said maraging steel typically exhibits tensile strength Rm of about 2800 MPa, yield strength Rp0.2 of about 2600 MPa, Vickers hardness>800 and alternating flexure strength o?bw of about 1550 MPa.
    Type: Application
    Filed: May 17, 2003
    Publication date: June 15, 2006
    Inventors: Hartwin Weber, Waldemar Doring, Dominik Fackelmann
  • Publication number: 20060065653
    Abstract: An electric heating element is provided with a durable PTC resistance made at least partially of an iron-based alloy, exhibiting stable characteristics to a temperature of 1500 DEG C. and having a resistance/temperature characteristic curve which substantially increases in a linear manner within a temperature range between an ambient temperature and 1500 DEG C. and can be used for a temperature control. The PCT resistance is provided with an oxidation resistant metallization or is gas-tightly enveloped by a jacket (2, 3, 12), a space between the jacket (2, 3, 12) and the PCT resistance (1,13) being filled with a powder or granules (14) which remove an important gas amount from the space.
    Type: Application
    Filed: September 26, 2005
    Publication date: March 30, 2006
    Inventors: Hartwin Weber, Waldemar Doering
  • Publication number: 20060045788
    Abstract: A material for electrical contacts comprising a martensitic cobalt-nickel-iron alloy with a high strength, a high bendability and a high electrical conductivity, with a cobalt content of 12.0?Co?60.0% by weight, a nickel content of 10.0?Ni?36.0% by weight, remainder iron and an impurity content of less than 0.2 atomic percent, with a martensite temperature Ms of 75° C.?Ms?400° C. in the case of the martensitic variant and ?50° C.?Ms?25° C. in the case of the variant which is naturally hard as a result of cold-forming.
    Type: Application
    Filed: August 18, 2005
    Publication date: March 2, 2006
    Inventors: Hartwin Weber, Waldemar Doring, Matthias Schierling
  • Publication number: 20050051239
    Abstract: A seamless, rotationally symmetrical hollow blank formed by a non-cutting operation from a deformable permanently magnetic alloy is provided, said alloy consisting essentially of 5.0 to 20.0 percent by weight cobalt, 20.0 to 35.0 percent by weight chromium, for the remainder iron and impurities caused by melting and/or by chance. The seamless hollow body is suitable in particular for use in hysteresis clutches, hysteresis brakes, and position measuring devices. Furthermore, non-cutting shaping processes for producing the seamless rotationally symmetrical hollow body are provided, with roller spinning being preferred.
    Type: Application
    Filed: May 27, 2004
    Publication date: March 10, 2005
    Inventors: Ottmar Roth, Hartwin Weber, Lutz Hinrich, Jens Diehl
  • Patent number: 6803118
    Abstract: A semi-hard magnetic alloy for activation strips in magnetic anti-theft security systems is disclosed that contains 8 to 25 weight % Ni, 1.0 to 4.5 weight % Al, 0.5 to 3 weight % Ti and the balance iron.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: October 12, 2004
    Assignee: Vacuumschmelze GmbH
    Inventors: Hartwin Weber, Gernot Hausch, Ottmar Roth
  • Patent number: 6793745
    Abstract: The invention relates to a high-strength, age-hardenable, corrosion-resistant maraging type spring steel, which is essentially comprised of 6.0 to 9.0 wt. % of Ni, 11.0 to 15.0 wt. % of Cr, 0.1 to 0.3 wt. % of Ti, 0.2 to 0.3 wt. % of Be and of a remainder consisting of Fe, whose martensite temperature Ms≧130° C. and which has a ferrite content cferrite of less than 3%.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: September 21, 2004
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Hartwin Weber, Waldemar Doering, Gernot Hausch
  • Publication number: 20040066297
    Abstract: A semi-hard magnetic alloy for activation strips in magnetic anti-theft security systems is disclosed that contains 8 to 25 weight % Ni, 1.0 to 4.5 weight % Al, 0.5 to 3 weight % Ti and the balance iron.
    Type: Application
    Filed: September 26, 2003
    Publication date: April 8, 2004
    Applicant: Vacuumschmelze GmbH
    Inventors: Hartwin Weber, Gernot Hausch, Ottmar Roth
  • Patent number: 6689490
    Abstract: Display Element for Employment in a Magnetic Anti-theft Security System A semi-hard magnetic alloy for activation strips in magnetic anti-theft security systems is disclosed that contains 8 to 25 weight % Ni, 1.5 to 4.5 weight % Al, 0.5 to 3 weight % Ti and balance iron. The alloy is distinguished over known, employed alloys by excellent magnetic properties and a high resistance to corrosion. Further, the inventive alloy can be excellently cold-worked before the annealing.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: February 10, 2004
    Assignee: Vacuumschmelze GmbH
    Inventors: Hartwin Weber, Gernot Hausch, Ottmar Roth
  • Patent number: 6663981
    Abstract: A marker for use in a magnetic anti-theft security system has an amorphous ferromagnetic alloy alarm strip and at least one activation strip. The semi-hard magnetic alloy for the activation strip contains 8 to 25 weight % Ni, 1.5 to 4.5 weight % Al, 0.5 to 3 weight % Ti and balance of iron. The alloy is distinguished over known, employed alloys by excellent magnetic properties and a high resistance to corrosion. Further, the alloy can be excellently cold-worked before the annealing.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: December 16, 2003
    Assignee: Vacuumschmelze GmbH
    Inventors: Hartwin Weber, Gernot Hausch, Ottmar Roth
  • Publication number: 20030129445
    Abstract: A semi-hard magnetic alloy for activation strips in magnetic anti-theft security systems is disclosed that contains 8 to 25 weight % Ni, 1.5 to 4.5 weight % Al, 0.5 to 3 weight % Ti and balance iron.
    Type: Application
    Filed: February 21, 2003
    Publication date: July 10, 2003
    Inventors: Hartwin Weber, Gernot Hausch, Ottmar Roth
  • Publication number: 20030091458
    Abstract: The invention relates to a high-strength, age-hardenable, corrosion-resistant maraging type spring steel, which is essentially comprised of 6.0 to 9.0 wt. % of Ni, 11.0 to 15.0 wt. % of Cr, 0.1 to 0.3 wt. % of Ti, 0.2 to 0.3 wt. % of Be and of a remainder consisting of Fe, whose martensite temperature Ms≧130° C. and which has a ferrite content cferrite of less than 3%.
    Type: Application
    Filed: September 16, 2002
    Publication date: May 15, 2003
    Inventors: Hartwin Weber, Waldemar Doering, Gernot Hausch
  • Patent number: 5817191
    Abstract: An iron-based, cobalt-containing soft magnetic alloy suitable for use as a core in a magnetic switch or other exciting circuits has a cobalt content of 6 through 30 weight percent, at least one of the elements chromium, molybdenum, vanadium and tungsten in range of 3 through 8 weight percent, and a remainder iron, possibly including inconsequential contaminants. The alloy has a coercive field strength of lower than or equal to 3.2 A/cm, and a saturation flux density of greater than 1.9 Tesla.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: October 6, 1998
    Assignee: Vacuumschmelze GmbH
    Inventors: Kurt Emmerich, Hartwin Weber, Hermann Wegerle