Patents by Inventor Fredrik Sandberg
Fredrik Sandberg 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).
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Patent number: 11293083Abstract: A steel alloy intended for cutting applications and hot working tools, comprising, in weight percent (wt. %), C: 0.40-1.2 wt. %, Si: 0.30-2.0 wt. %, Mn: max 1.0 wt. %, Cr: 3.0-6.0 wt. %, Mo: 0-4.0 wt. %, W: 0-8.0 wt. %, wherein (Mo+W/2)?3.5 wt. %, Nb: 0-4.0 wt. %, V: 0-4.0 wt. %, wherein 1.0 wt. %?(Nb+V)?4.0 wt. %, Co: 25-40 wt. %, S: max 0.30 wt. %, N: max 0.30 wt. %, the balance being Fe and unavoidable impurities.Type: GrantFiled: March 15, 2017Date of Patent: April 5, 2022Assignee: Erasteel SASInventors: Fredrik Sandberg, Delphine Rébois, Stefan Sundin
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Patent number: 10919088Abstract: A method of controlling an electromagnetic stirrer arranged around a submerged entry nozzle (SEN) of a tundish provided with a stopper rod to control throughput of the tundish, the SEN being configured to provide tapping of molten metal from the tundish and the electromagnetic stirrer being configured to generate a rotating magnetic field in the SEN, wherein the method includes controlling the electromagnetic stirrer to operate only when a gas flow rate through the stopper rod is in a first range of 1.5 NL/min to 20 NL/min.Type: GrantFiled: January 23, 2018Date of Patent: February 16, 2021Assignees: ABB Schweiz AG, ArcelorMittalInventors: Bengt Rydholm, Fredrik Sandberg, Hongliang Yang, Jan-Erik Eriksson, Jean-Marie Galpin, Bruno Langlet, Jean-Luc Curé, Nicolas Triolet, Thierry Lecoester
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Publication number: 20210010116Abstract: The present invention relates to a steel composition comprising, in percentages by weight of the total composition: Carbon: 0.06-0.20 preferably 0.08-0.18; Chromium: 2.5-5.0, preferably 3.0-4.5; Molybdenum: 4.0-6.0; Tungsten: 0.01-3.0; Vanadium: 1.0-3.0, preferably 1.5-2.5; Nickel: 2.0-4.0; Cobalt: 9.0-12.5, preferably 9.5-11.0; Iron: remainder as well as the inevitable impurities, optionally further comprising one or more of the following elements: Niobium: ?2.0; Nitrogen: ?0.50, preferably ?0.20; Silicon: ?0.70, preferably 0.05-0.50; Manganese: ?0.70, preferably 0.05-0.50; Aluminum: ?0.15, preferably ?0.10; the combined niobium+vanadium content being in the range 1.0-3.5; and the carbon+nitrogen content being in the range 0.06-0.50. It further relates to method of manufacture thereof, the steel blank obtained and a mechanical device or an injection system comprising same.Type: ApplicationFiled: March 14, 2019Publication date: January 14, 2021Inventors: Jacques BELLUS, Atman BENBAHMED, Johanna ANDRE, Fredrik SANDBERG
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Patent number: 10875090Abstract: An assembly for a metal-making process, having: a tundish, a submerged entry nozzle (SEN) configured to provide tapping of molten metal from the tundish, and an electromagnetic stirrer arranged around the SEN, the electromagnetic stirrer having a closed and integral SEN-enclosing portion provided with coils for generating a rotating electromagnetic field in the SEN, the SEN-enclosing portion providing a circumferentially closed and integral annular passage through which the SEN extends, wherein the electromagnetic stirrer is immovably mounted relative to the tundish and relative to the SEN.Type: GrantFiled: November 23, 2017Date of Patent: December 29, 2020Assignees: ABB Schweiz AG, ArcelorMittalInventors: Jan-Erik Eriksson, Jean-Marie Galpin, Bengt Rydholm, Hongliang Yang, Jean-Luc Curé, Nicolas Triolet, Bruno Langlet, Fredrik Sandberg
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Patent number: 10865457Abstract: The present invention relates to a steel composition carburizable and/or nitritable, comprising, in percentages by weight of the total composition: Carbon: 0.05-0.40, preferably 0.10-0.30; Chromium: 2.50-5.00, preferably 3.00-4.50; Molybdenum: 4.00-6.00; Tungsten: 0.01-1.80, preferably 0.02-1.50; Vanadium: 1.00-3.00, preferably 1.50-2.50; Nickel: 2.00-4.00; Cobalt: 2.00-8.00, preferably 3.00-7.00; Iron: balance as well as the inevitable impurities, optionally further comprising one or more of the following elements: Niobium: ?2.00; Nitrogen: ?0.50, preferably ?0.20; Silicon: ?0.70, preferably 0.05-0.50; Manganese: ?0.70, preferably 0.05-0.50; Aluminum: ?0.15, preferably ?0.10; the combined niobium+vanadium content being in the range 1.00-3.50; and the carbon+nitrogen content being in the range 0.05-0.50. It further relates to the method of production thereof, the steel blank obtained and a mechanical device comprising the latter.Type: GrantFiled: June 16, 2017Date of Patent: December 15, 2020Assignee: AUBERT & DUVALInventors: Jacques Bellus, Atman Benbahmed, Johanna Andre, Fredrik Sandberg
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Publication number: 20200188994Abstract: A method of controlling an electromagnetic stirrer arranged around a submerged entry nozzle (SEN) of a tundish provided with a stopper rod to control throughput of the tundish, the SEN being configured to provide tapping of molten metal from the tundish and the electromagnetic stirrer being configured to generate a rotating magnetic field in the SEN, wherein the method includes controlling the electromagnetic stirrer to operate only when a gas flow rate through the stopper rod is in a first range of 1.5 NL/min to 20 NL/min.Type: ApplicationFiled: January 23, 2018Publication date: June 18, 2020Inventors: Bengt Rydholm, Fredrik Sandberg, Hongliang Yang, Jan-Erik Eriksson, Jean-Marie Galpin, Bruno Langlet, Jean-Luc Curé, Nicolas Triolet, Thierry Lecoester
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Publication number: 20190338383Abstract: The present invention relates to a steel composition carburizable and/or nitritable, comprising, in percentages by weight of the total composition: Carbon: 0.05-0.40, preferably 0.10-0.30; Chromium: 2.50-5.00, preferably 3.00-4.50; Molybdenum: 4.00-6.00; Tungsten: 0.01-1.80, preferably 0.02-1.50; Vanadium: 1.00-3.00, preferably 1.50-2.50; Nickel: 2.00-4.00; Cobalt: 2.00-8.00, preferably 3.00-7.00; Iron: balance as well as the inevitable impurities, optionally further comprising one or more of the following elements: Niobium: ?2.00; Nitrogen: ?0.50, preferably ?0.20; Silicon: ?0.70, preferably 0.05-0.50; Manganese: ?0.70, preferably 0.05-0.50; Aluminum: ?0.15, preferably ?0.10; the combined niobium+vanadium content being in the range 1.00-3.50; and the carbon+nitrogen content being in the range 0.05-0.50. It further relates to the method of production thereof, the steel blank obtained and a mechanical device comprising the latter.Type: ApplicationFiled: June 16, 2017Publication date: November 7, 2019Inventors: Jacques BELLUS, Atman BENBAHMED, Johanna ANDRE, Fredrik SANDBERG
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Patent number: 10450644Abstract: A carburisable steel alloy suitable for bearing components comprising, in percent by weight: C 0.05-0.5 wt. % Cr 2.5-5.0 wt. %, Mo 4-6 wt. %, W 2-4.5 wt. %, V 1-3 wt. %, Ni 2-4 wt. %, Co 2-8 wt. %, optionally one or more of the following elements: Nb 0-2 wt. % N 0-0.5 wt. % Si 0-0.7 wt. %, Mn 0-0.7 wt. %, Al 0-0.1 5 wt. %, wherein the combined amount of Nb+V is within the range 1-3.5 wt. %, the combined amount of C+N is within the range 0.05-0.5 wt. %, the balance being Fe and unavoidable impurities.Type: GrantFiled: November 28, 2014Date of Patent: October 22, 2019Assignees: ERASTEEL, AUBERT & DUVALInventors: Johanna André, Fredrik Sandberg, M. Atman Benbahmed, Jacques Bellus
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Publication number: 20190314892Abstract: An assembly for a metal-making process, having: a tundish, a submerged entry nozzle(SEN) configured to provide tapping of molten metal from the tundish, and an electromagnetic stirrer arranged around the SEN, the electromagnetic stirrer having a closed and integral SEN-enclosing portion provided with coils for generating a rotating electromagnetic field in the SEN, the SEN-enclosing portion providing a circumferentially closed and integral annular passage through which the SEN extends, wherein the electromagnetic stirrer is immovably mounted relative to the tundish and relative to the SEN.Type: ApplicationFiled: November 23, 2017Publication date: October 17, 2019Inventors: Jan-Erik Eriksson, Jean-Marie Galpin, Bengt Rydholm, Hongliang Yang, Jean-Luc Curé, Nicolas Triolet, Bruno Langlet, Fredrik Sandberg
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Publication number: 20190078184Abstract: A steel alloy intended for cutting applications and hot working tools, comprising, in weight percent (wt. %), C: 0.40-1.2 wt. %, Si: 0.30-2.0 wt. %, Mn: max 1.0 wt. %, Cr: 3.0-6.0 wt. %, Mo: 0-4.0 wt. %, W: 0-8.0 wt. %, wherein (Mo+W/2)?3.5 wt. %, Nb: 0-4.0 wt. %, V: 0-4.0 wt. %, wherein 1.0 wt. %?(Nb+V)?4.0 wt. %, Co: 25-40 wt. %, S: max 0.30 wt. %, N: max 0.30 wt. %, the balance being Fe and unavoidable impurities.Type: ApplicationFiled: March 15, 2017Publication date: March 14, 2019Inventors: Fredrik SANDBERG, Delphine RÉBOIS, Stefan SUNDIN
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Patent number: 9989152Abstract: A wiper-seal assembly for a cylinder with a cylinder wall and with a relative movable rod/piston rod with a piston wall is arranged for mounting in a ring-shaped groove in a cylinder wall or a rod/piston rod wall in front of a sealing or a steering. The wiper-seal assembly includes a ring-shaped wiper with one or more wiper sealing lip portions against the opposite relatively moving cylinder wall or the rod/piston rod wall. The wiper is further arranged for fluid transport from a gap between the cylinder wall and the rod/piston rod wall outside the ring shaped groove through pressure releasing flow conduits and further to the gap between the cylinder wall and the piston rod wall outside and at the opposite side of the ring shaped groove, and where the wiper-seal assembly further includes one or more filters.Type: GrantFiled: July 4, 2014Date of Patent: June 5, 2018Assignee: SEAL ENGINEERING ASInventors: Julian Putkowski, Hans Fredrik Sandberg
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Publication number: 20170159820Abstract: A wiper-seal assembly for a cylinder with a cylinder wall and with a relative movable rod/piston rod with a piston wall is arranged for mounting in a ring-shaped groove in a cylinder wall or a rod/piston rod wall in front of a sealing or a steering. The wiper-seal assembly includes a ring-shaped wiper with one or more wiper sealing lip portions against the opposite relatively moving cylinder wall or the rod/piston rod wall. The wiper is further arranged for fluid transport from a gap between the cylinder wall and the rod/piston rod wall outside the ring shaped groove through pressure releasing flow conduits and further to the gap between the cylinder wall and the piston rod wall outside and at the opposite side of the ring shaped groove, and where the wiper-seal assembly further includes one or more filters.Type: ApplicationFiled: July 4, 2014Publication date: June 8, 2017Applicant: SEAL ENGINEERING ASInventors: Julian PUTKOWSKI, Hans Fredrik SANDBERG
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Publication number: 20170159819Abstract: A pressure released wiper assembly, for a cylinder with a rotating and/or reciprocal relatively moving rod or piston, configured to be freely placed and captured in a circular groove in a cylinder wall of the cylinder, includes a ring-shaped filter holder with a V- or U-shaped cross section with a V- or U-shaped opening in an axial direction, the V- or U-shaped opening facing towards a potential contaminated side of the wiper assembly; and one or more filters.Type: ApplicationFiled: February 6, 2017Publication date: June 8, 2017Applicant: SEAL ENGINEERING ASInventors: Julian PUTKOWSKI, Hans Fredrik SANDBERG
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Patent number: 9599226Abstract: A pressure released wiper assembly is arranged to fit into a ring-shaped groove in a cylinder or at a piston rod. The pressure released wiper with a V- or U-shaped cross section includes an opening in the axial direction to a potential contaminated side of the wiper assembly, a ring shaped base portion, a ring disk shaped rear portion, a lip portion, one or more through openings from the opening through the rear portion to a gap formed between the cylinder wall and the rod or piston outside the ring-shaped groove, and one or more filters covering at least the one or more through openings to the potential contaminated side of the wiper assembly in the filter holder.Type: GrantFiled: June 4, 2014Date of Patent: March 21, 2017Assignee: SEAL ENGINEERING ASInventors: Julian Putkowski, Hans Fredrik Sandberg
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Publication number: 20160298225Abstract: A carburisable steel alloy suitable for bearing components comprising, in percent by weight: C 0.05-0.5 wt. % Cr 2.5-5.0 wt. %, Mo 4-6 wt. %, W 2-4.5 wt. %, V 1 -3 wt. %, Ni 2-4 wt. %, Co 2-8 wt. %, optionally one or more of the following elements: Nb 0-2 wt. % N 0-0.5 wt. % Si 0-0.7 wt. %, Mn 0-0.7 wt. %, Al 0-0.1 5 wt. %, wherein the combined amount of Nb+V is within the range 1 -3.5 wt. %, the combined amount of C+N is within the range 0.05-0.5 wt. %, the balance being Fe and unavoidable impurities.Type: ApplicationFiled: November 28, 2014Publication date: October 13, 2016Inventors: Johanna Olofsson, Fredrik Sandberg, M. Atman Benbahmed, Jacques Bellus
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Publication number: 20160116065Abstract: A pressure released wiper assembly is arranged to fit into a ring-shaped groove in a cylinder or at a piston rod. The pressure released wiper with a V- or U-shaped cross section includes an opening in the axial direction to a potential contaminated side of the wiper assembly, a ring shaped base portion, a ring disk shaped rear portion, a lip portion, one or more through openings from the opening through the rear portion to a gap formed between the cylinder wall and the rod or piston outside the ring-shaped groove, and one or more filters covering at least the one or more through openings to the potential contaminated side of the wiper assembly in the filter holder.Type: ApplicationFiled: June 4, 2014Publication date: April 28, 2016Applicant: SEAL ENGINEERING ASInventors: Julian PUTKOWSKI, Hans Fredrik SANDBERG