Patents by Inventor Susumu Okawa
Susumu Okawa 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: 11534851Abstract: Provided is a spatter scattering prevention apparatus that eliminates the necessity to, for example, remove scattered spatters and thus makes it possible to facilitate maintenance work, and also provided is a flash butt welder including the spatter scattering prevention apparatus. The spatter scattering prevention apparatus 1 according to the present invention is characterized by being configured to form a water screen in midair in the vicinity of a welding spot, at which welding is performed, wherein the water screen is for preventing spatters, generated during the welding, from scattering. The spatter scattering prevention apparatus is also characterized by being configured to form the water screen on one side in a lateral direction of the welding spot and form the water screen on the other side, laterally opposite to the one side, of the welding spot.Type: GrantFiled: June 14, 2018Date of Patent: December 27, 2022Assignee: JP STEEL PLANTECH CO.Inventors: Tomohiro Kudo, Hiroshi Fujii, Hiroshi Goto, Susumu Okawa
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Publication number: 20200114457Abstract: Provided is a spatter scattering prevention apparatus that eliminates the necessity to, for example, remove scattered spatters and thus makes it possible to facilitate maintenance work, and also provided is a flash butt welder including the spatter scattering prevention apparatus. The spatter scattering prevention apparatus 1 according to the present invention is characterized by being configured to form a water screen in midair in the vicinity of a welding spot, at which welding is performed, wherein the water screen is for preventing spatters, generated during the welding, from scattering. The spatter scattering prevention apparatus is also characterized by being configured to form the water screen on one side in a lateral direction of the welding spot and form the water screen on the other side, laterally opposite to the one side, of the welding spot.Type: ApplicationFiled: June 14, 2018Publication date: April 16, 2020Applicant: JP STEEL PLANTECH CO.Inventors: Tomohiro KUDO, Hiroshi FUJII, Hiroshi GOTO, Susumu OKAWA
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Patent number: 8395073Abstract: The continuous rolling method and the continuous rolling apparatus provide good product quality and product yield by successively joining pluralities of traveling hot steel pieces by flash welding, and by rolling thus prepared endless steel piece, thus preventing generation of flaws in the rolling step, thereby manufacture steel rods, wires, and the like by the continuous rolling technology. The method has: a heating step for heating billet to a specified temperature; a flash welding step for joining the trailing end of preceding billet with the leading end of succeeding billet while they are traveling using flash welding; a deburring step for removing burrs from the welded part; a trimming step for trimming corners of cross section of the deburred welded part; and a rolling step for rolling the joined billets.Type: GrantFiled: June 8, 2006Date of Patent: March 12, 2013Assignee: JP Steel Plantech Co.Inventor: Susumu Okawa
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Patent number: 7991532Abstract: The present invention provides a novel method for generating braking force in a wheel. In a vehicle having wheels, a wheel control device for controlling the wheels is provided with an actuator for performing an operation to vary a slip angle of the wheels, and a controller for controlling the actuator to increase the braking force of the wheels by increasing the slip angle absolute value of the wheels such that a lateral force is generated in the wheels relative to a ground contact surface of the wheels.Type: GrantFiled: December 27, 2005Date of Patent: August 2, 2011Assignee: Equos Research Co., Ltd.Inventors: Nobuaki Miki, Munehisa Horiguchi, Takafumi Miyake, Susumu Okawa
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Publication number: 20080162009Abstract: The present invention provides a novel method for generating braking force in a wheel. In a vehicle having wheels, a wheel control device for controlling the wheels is provided with an actuator for performing an operation to vary a slip angle of the wheels, and a controller for controlling the actuator to increase the braking force of the wheels by increasing the slip angle absolute value of the wheels such that a lateral force is generated in the wheels relative to a ground contact surface of the wheels.Type: ApplicationFiled: December 27, 2005Publication date: July 3, 2008Applicant: Kabushikikaisha Equos ResearchInventors: Nobuaki Miki, Munehisa Horiguchi, Takafumi Miyake, Susumu Okawa
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Publication number: 20060278615Abstract: The continuous rolling method and the continuous rolling apparatus provide good product quality and product yield by successively joining pluralities of traveling hot steel pieces by flash welding, and by rolling thus prepared endless steel piece, thus preventing generation of flaws in the rolling step, thereby manufacture steel rods, wires, and the like by the continuous rolling technology. The method has: a heating step for heating billet to a specified temperature; a flash welding step for joining the trailing end of preceding billet with the leading end of succeeding billet while they are traveling using flash welding; a deburring step for removing burrs from the welded part; a trimming step for trimming corners of cross section of the deburred welded part; and a rolling step for rolling the joined billets.Type: ApplicationFiled: June 8, 2006Publication date: December 14, 2006Applicant: JP Steel Plantech Co.Inventor: Susumu Okawa
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Patent number: 6648564Abstract: A burr located at an edge of a steel piece is cut by disposing a cutter such that the flank of the cutter is substantially in parallel with the surface of the steel piece and the angle between the cutting edge of the cutter and the edge of the steel piece which the burr intersects is at least 45°. The cutter is relatively moved toward the outside of the steel piece along the lengthwise direction of the burr, or the cutter is disposed with the flank of the cutter substantially in parallel with the surface of the steel piece and the angle between the cutting edge of the cutter and the edge of the steel piece is at least 90°. The burr located at the edge of the steel piece is cut by relatively moving the cutter perpendicularly to the lengthwise direction of the burr.Type: GrantFiled: February 21, 2003Date of Patent: November 18, 2003Assignees: NKK Corporation, JP Steel Plantech Co.Inventors: Koji Yamashita, Hiromasa Hayashi, Susumu Okawa, Koji Okushima
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Publication number: 20030129034Abstract: A burr located at an edge of a steel piece is cut by disposing a cutter such that the flank of the cutter is substantially in parallel with the surface of the steel piece and the angle between the cutting edge of the cutter and the edge of the steel piece which the burr intersects is at least 45°. The cutter is relatively moved toward the outside of the steel piece along the lengthwise direction of the burr, or the cutter is disposed with the flank of the cutter substantially in parallel with the surface of the steel piece and the angle between the cutting edge of the cutter and the edge of the steel piece is at least 90°. The burr located at the edge of the steel piece is cut by relatively moving the cutter perpendicularly to the lengthwise direction of the burr.Type: ApplicationFiled: February 21, 2003Publication date: July 10, 2003Applicant: NKK Corporation, a corporation of JapanInventors: Koji Yamashita, Hiromasa Hayashi, Susumu Okawa, Koji Okushima
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Patent number: 6402441Abstract: In a burr removing method and apparatus of the present invention, a burr located at an edge of a steel piece is cut with a cutter by disposing the cutter such that the flank of the cutter is substantially in parallel with the surface of the steel piece on which the burr exists and the angle between the cutting edge of the cutter and the edge of the steel piece which the burr intersects is at least 45° and piece along the lengthwise direction of the burr; or by disposing the cutter such that the flank of the cutter is substantially in parallel with the surface of the steel piece on which the burr exists and the angle between the cutting edge of the cutter and the edge of the steel piece which the burr intersects is at least 90° and cutting the burr located at the edge of the steel piece by relatively moving the cutter perpendicularly to the lengthwise direction of the burr.Type: GrantFiled: May 24, 2001Date of Patent: June 11, 2002Assignee: NKK CorporationInventors: Koji Yamashita, Hiromasa Hayashi, Susumu Okawa, Koji Okushima
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Publication number: 20020061237Abstract: In a burr removing method and apparatus of the present invention, a burr located at an edge of a steel piece is cut with a cutter by disposing the cutter such that the flank of the cutter is substantially in parallel with the surface of the steel piece on which the burr exists and the angle between the cutting edge of the cutter and the edge of the steel piece which the burr intersects is at least 45° and relatively moving the cutter toward the outside of the steel piece along the lengthwise direction of the burr; or by disposing the cutter such that the flank of the cutter is substantially in parallel with the surface of the steel piece on which the burr exists and the angle between the cutting edge of the cutter and the edge of the steel piece which the burr intersects is at least 90° and cutting the burr located at the edge of the steel piece by relatively moving the cutter perpendicularly to the lengthwise direction of the burr.Type: ApplicationFiled: December 3, 2001Publication date: May 23, 2002Applicant: NKK Corporation, a corporation of JAPANInventors: Koji Yamashita, Hiromasa Hayashi, Susumu Okawa, Koji Okushima
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Patent number: 6386420Abstract: A plurality of materials are rolled in an upstream stand. While the transfer speed of a succeeding material and the front end position thereof are detected, the transfer speed and the rear end position of a preceding material are detected by a measuring roll. The transfer speed of the succeeding material is controlled by adjusting at least the drive speed of the pinch rolls so that the front end of the succeeding material contacts the rear end of the preceding material at a specified position in a travelling welder. The rear end of the preceding material is joined with the front end of the succeeding material by flash-butt welding using the travelling welder to form a continuous material while letting the travelling welder move at a speed synchronous with the transfer speed of the continuous material. The welded portion on the continuous material is ground and/or cut to remove burrs therefrom. After removing the burrs, the continuous material is continuously rolled by a down-stream stand.Type: GrantFiled: May 3, 2001Date of Patent: May 14, 2002Assignee: NKK CorporationInventors: Giichi Matsuo, Susumu Okawa, Koji Okushima
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Patent number: 6296428Abstract: In a burr removing method and apparatus of the present invention, a burr located at an edge of a steel piece is cut with a cutter by disposing the cutter such that the flank of the cutter is substantially in parallel with the surface of the steel piece on which the burr exists and the angle between the cutting edge of the cutter and the edge of the steel piece which the burr intersects is at least 45° and relatively moving the cutter toward the outside of the steel piece along the lengthwise direction of the burr; or by disposing the cutter such that the flank of the cutter is substantially in parallel with the surface of the steel piece on which the burr exists and the angle between the cutting edge of the cutter and the edge of the steel piece which the burr intersects is at least 90° and cutting the burr located at the edge of the steel piece by relatively moving the cutter perpendicularly to the lengthwise direction of the burr.Type: GrantFiled: June 16, 2000Date of Patent: October 2, 2001Assignee: NKK CorporationInventors: Koji Yamashita, Hiromasa Hayashi, Susumu Okawa, Koji Okushima
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Publication number: 20010022921Abstract: In a burr removing method and apparatus of the present invention, a burr located at an edge of a steel piece is cut with a cutter by disposing the cutter such that the flank of the cutter is substantially in parallel with the surface of the steel piece on which the burr exists and the angle between the cutting edge of the cutter and the edge of the steel piece which the burr intersects is at least 45° and relatively moving the cutter toward the outside of the steel piece along the lengthwise direction of the burr; or by disposing the cutter such that the flank of the cutter is substantially in parallel with the surface of the steel piece on which the burr exists and the angle between the cutting edge of the cutter and the edge of the steel piece which the burr intersects is at least 90° and cutting the burr located at the edge of the steel piece by relatively moving the cutter perpendicularly to the lengthwise direction of the burr.Type: ApplicationFiled: May 24, 2001Publication date: September 20, 2001Applicant: NKK CorporationInventors: Koji Yamashita, Hiromasa Hayashi, Susumu Okawa, Koji Okushima
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Publication number: 20010015367Abstract: A plurality of materials are rolled in an upstream stand. While transfer speed of a succeeding material and the front end position thereof are detected, the transfer speed and the rear end position of a preceding material are detected by a measuring roll. The transfer speed of the succeeding material is controlled by adjusting at least the drive speed of the pinch rolls so as the front end of the succeeding material to contact with the rear end of the preceding material at a specified position in a travelling welder. the rear end of the preceding material is joined with the front end of the succeeding material by flash-butt welding using the travelling welder to form a continuous material while letting the travelling welder move at a speed synchronous with the transfer speed of the continuous material. The welded portion on the continuous material is ground and/or cut to remove burr therefrom.Type: ApplicationFiled: May 3, 2001Publication date: August 23, 2001Applicant: NKK CORPORATION - Japanese CorporationInventors: Giichi Matsuo, Susumu Okawa, Koji Okushima
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Patent number: 6273324Abstract: A plurality of materials are rolled in an upstream stand. While the transfer speed of a succeeding material and the front end position thereof are detected, the transfer speed and the rear end position of a preceding material are detected by a measuring roll. The transfer speed of the succeeding material is controlled by adjusting at least the drive speed of the pinch rolls so that the front end of the succeeding material contacts the rear end of the preceding material at a specified position in a travelling welder. The rear end of the preceding material is joined with the front end of the succeeding material by flash-butt welding using the travelling welder to form a continuous material while letting the travelling welder move at a speed synchronous with the transfer speed of the continuous material. The welded portion on the continuous material is ground and/or cut to remove burr therefrom. After removing the burr, the continuous material is continuously rolled by a down-stream stand.Type: GrantFiled: February 23, 2000Date of Patent: August 14, 2001Assignee: NKK CorporationInventors: Giichi Matsuo, Susumu Okawa, Koji Okushima
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Patent number: 6262385Abstract: A flash-butt welder having a stationary head 41 and a moving head 42, a pair of electrodes 45a, 45b, and 46a, 46b coupled to each of the stationary and moving heads, respectively, power source transformers 12 through 16 are located at the stationary head 41 side. Four bus bars 21 through 24 connecting the power source transformers 12 through 16 with the electrodes 45a, 45b, 46a, and 46b are arranged at symmetrical positions surrounding a billet 10. However, the number of bus bars, 22 and 24, which are connected to the electrodes 46a and 46b at the moving head 42 side is half the total number of four bus bars.Type: GrantFiled: March 20, 2000Date of Patent: July 17, 2001Assignee: NKK CorporationInventors: Giichi Matsuo, Susumu Okawa, Hiroshi Fujii
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Patent number: 6116496Abstract: A method of continuous rolling comprises the steps of: forming a continuous billet 20 by joining a rear end of preceding billet 21 with a front end of succeeding billet 21 by flash-butt welding 3; removing burr on welded portions of the continuous billets 20; then rolling the continuous billet 20 in a rolling mill line 6; wherein locally cold portions produced by clamping at welding are reheated after removing the burr using a travelling induction-heating unit 5 running at a speed synchronously with a running speed of the continuous billet 20, which travelling induction-heating unit 5 is provided with induction-heating coils arranged at the same distance with that of the locally cold portions.Type: GrantFiled: June 16, 1997Date of Patent: September 12, 2000Assignee: NKK CorporationInventors: Giichi Matsuo, Susumu Okawa, Hiroshi Fujii
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Patent number: 6107594Abstract: A flash-butt welder having a stationary head 41 and a moving head 42, a pair of electrodes 45a, 45b, and 46a, 46b arranged to each of the stationary and moving heads, respectively, wherein power source transformers 12 through 16 are located at the stationary head 41 side, four bus bars 21 through 24 connecting the power source transformers 12 through 16 with the electrodes 45a, 45, 46a, and 46b are arranged at symmetrical positions surrounding a billet 10, while the bus bars, 22 and 24 as half of the number are connected to the electrodes 46a and 46b at the moving head 42 side.Type: GrantFiled: December 4, 1998Date of Patent: August 22, 2000Assignee: NKK CorporationInventors: Giichi Matsuo, Susumu Okawa, Hiroshi Fujii
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Patent number: 6089441Abstract: A plurality of materials are rolled in an upstream stand. While the transfer speed of a succeeding material and the front end position thereof are detected, the transfer speed and the rear end position of a preceding material are detected by a measuring roll. The transfer speed of the succeeding material is controlled by adjusting at least the drive speed of the pinch rolls so that the front end of the succeeding material contacts the rear end of the preceding material at a specified position in a travelling welder. The rear end of the preceding material is joined with the front end of the succeeding material by flash-butt welding using the travelling welder to form a continuous material while letting the travelling welder move at a speed synchronous with the transfer speed of the continuous material. The welded portion on the continuous material is ground and/or cut to remove burr therefrom. After removing the burr, the continuous material is continuously rolled by a down-stream stand.Type: GrantFiled: June 16, 1997Date of Patent: July 18, 2000Assignee: NKK CorporationInventors: Giichi Matsuo, Susumu Okawa, Koji Okushima
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Patent number: 6041993Abstract: A method for continuous rolling includes flash-butt welding to form a continuous billet by joining a rear end of a preceding billet with a front end of a succeeding billet, removing burrs from a welded portion of the joined part, and continuously rolling the joined continuous billet in a rolling mill group. The flash-butt welding step includes the use of two travelling welders arranged in series and spaced at a distance along the direction of movement of the continuous billet corresponding to the length of the billet being welded. The travelling welders synchronously move with the continuous billet, and separately and simultaneously weld the continuous billet to another billet by flash-butt welding so as to extend the length of the continuous billet.Type: GrantFiled: June 16, 1997Date of Patent: March 28, 2000Assignee: NKK CorporationInventors: Giichi Matsuo, Susumu Okawa, Hiroshi Fujii