Patents by Inventor Yukihiro Yoshikawa
Yukihiro Yoshikawa 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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Publication number: 20200182216Abstract: An outboard motor having an idling stop function, which includes a starter motor configured to start up an engine, a capacitor configured to serve as a power source of the starter motor, a restarting circuit that includes a restart switch configured to activate the starter motor by electric power supplied from the capacitor in conjunction with a shift lever directly operated by a ship operator at a time of restarting after idling stop, a changeover switch configured to switch to an idling stop mode that enables the restarting circuit, and an engine control device configured to control shifting to the idling stop in the idling stop mode. The capacitor is disposed in an engine compartment of the outboard motor.Type: ApplicationFiled: December 3, 2019Publication date: June 11, 2020Applicant: SUZUKI MOTOR CORPORATIONInventor: Yukihiro YOSHIKAWA
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Patent number: 9663213Abstract: The authentication unit stores information for causing the outboard motor control unit to permit an engine start in order to enable setting of an unlock state in which the engine start is permitted without authentication of ID information of an electronic key and a child lock state in which the engine start is permitted by performing a predetermined release operation without necessity of authenticating the ID information of the electric key.Type: GrantFiled: January 14, 2016Date of Patent: May 30, 2017Assignee: SUZUKI MOTOR CORPORATIONInventor: Yukihiro Yoshikawa
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Patent number: 9599085Abstract: A fuel injection device injects fuel per each cylinder in an engine having a plurality of cylinders #1 and #2. At a time of engine actuation, start timings of fuel injections are shifted per each cylinder and times within one rotation of a crankshaft is set as the injection start timings for all cylinders. At least the initial fuel injection is performed before cylinder discrimination.Type: GrantFiled: April 2, 2013Date of Patent: March 21, 2017Assignee: SUZUKI MOTOR CORPORATIONInventor: Yukihiro Yoshikawa
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Patent number: 9422907Abstract: A start control device (20) for an outboard motor (40) has: a determination unit (64) determining whether or not an emergency switch (31) is on when a first switch is operated by a boat operator; a start instruction unit (65) instructing a start of the outboard motor (40) when the determination unit (64) determines that the emergency switch (31) is not on; and a stop instruction unit (66) instructing a stop of a supply of electric power to the outboard motor (40) when the determination unit (64) determines that the emergency switch (31) is on. It is possible to make a state where the electric power is supplied to the outboard motor (40) shift to a state where the supply of electric power to the outboard motor (40) is stopped without starting the outboard motor (40).Type: GrantFiled: August 14, 2013Date of Patent: August 23, 2016Assignee: SUZUKI MOTOR CORPORATIONInventor: Yukihiro Yoshikawa
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Publication number: 20160207604Abstract: The authentication unit stores information for causing the outboard motor control unit to permit an engine start in order to enable setting of an unlock state in which the engine start is permitted without authentication of ID information of an electronic key and a child lock state in which the engine start is permitted by performing a predetermined release operation without necessity of authenticating the ID information of the electric key.Type: ApplicationFiled: January 14, 2016Publication date: July 21, 2016Applicant: SUZUKI MOTOR CORPORATIONInventor: Yukihiro Yoshikawa
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Publication number: 20150300306Abstract: A start control device (20) for an outboard motor (40) has: a determination unit (64) determining whether or not an emergency switch (31) is on when a first switch is operated by a boat operator; a start instruction unit (65) instructing a start of the outboard motor (40) when the determination unit (64) determines that the emergency switch (31) is not on; and a stop instruction unit (66) instructing a stop of a supply of electric power to the outboard motor (40) when the determination unit (64) determines that the emergency switch (31) is on. It is possible to make a state where the electric power is supplied to the outboard rotor (40) shift to a state where the supply of electric power to the outboard motor (40) is stopped without starting the outboard motor (40).Type: ApplicationFiled: August 14, 2013Publication date: October 22, 2015Applicant: SUZUKI MOTOR CORPORATIONInventor: Yukihiro YOSHIKAWA
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Patent number: 8684776Abstract: A single switch unit having a pair of switches is provided in the vicinity of a throttle grip which is provided in a distal end of a tiller handle. The single switch unit is provided with a function of performing the operation for changing a tilt angle of an outboard motor body with respect to a hull and a function of performing the operation for adjusting a rotational speed of an engine of the outboard motor at the time of trolling operation. Upon simultaneous pressing of a pair of the switches, these two functions of the switch unit are switched.Type: GrantFiled: July 5, 2012Date of Patent: April 1, 2014Assignee: Suzuki Motor CorporationInventors: Yukihiro Yoshikawa, Kotaro Kobayashi
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Publication number: 20130255632Abstract: A fuel injection device injects fuel per each cylinder in an engine having a plurality of cylinders #1 and #2. At a time of engine actuation, start timings of fuel injections are shifted per each cylinder and times within one rotation of a crankshaft is set as the injection start timings for all cylinders. At least the initial fuel injection is performed before cylinder discrimination.Type: ApplicationFiled: April 2, 2013Publication date: October 3, 2013Applicant: SUZUKI MOTOR CORPORATIONInventor: Yukihiro YOSHIKAWA
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Publication number: 20130012080Abstract: A single switch unit having a pair of switches is provided in the vicinity of a throttle grip which is provided in a distal end of a tiller handle. The single switch unit is provided with a function of performing the operation for changing a tilt angle of an outboard motor body with respect to a hull and a function of performing the operation for adjusting a rotational speed of an engine of the outboard motor at the time of trolling operation. Upon simultaneous pressing of a pair of the switches, these two functions of the switch unit are switched.Type: ApplicationFiled: July 5, 2012Publication date: January 10, 2013Applicant: Suzuki Motor CorporationInventors: Yukihiro Yoshikawa, Kotaro Kobayashi
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Patent number: 7673485Abstract: Hot press forming of a steel material is made possible by coating the surface of the steel material with a plated layer of zinc or a zinc alloy and forming thereon a barrier layer which prevents the vaporization of zinc even when heated to 700-1000° C. Corrosion resistance can also be guaranteed without requiring post treatment, and hot press forming of high tensile steel sheet and stainless steel sheet is made possible. The barrier layer is formed by forming an upper plated layer, by surface oxidation, by contact with an oxidizing agent, by contact with Zn and an oxidizing agent, by anodic electrolysis, by cathodic electrolysis, or by coating with a ZnO sol.Type: GrantFiled: July 22, 2005Date of Patent: March 9, 2010Assignee: Sumitomo Metal Industries, Ltd.Inventors: Kazuhito Imai, Tamotsu Toki, Yukihiro Yoshikawa, Masaru Takahashi, Toshinobu Nishibata, Nobusato Kojima
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Patent number: 7399535Abstract: A hot press-formed article having improved corrosion resistance and coating adhesion when coated is obtained by hot press forming of a zinc-based plated steel material. It has a zinc-based plating layer comprising an iron-zinc solid solution phase and atop it a zinc oxide layer. The average thickness of the zinc oxide layer which is the outermost layer is at most 2 ?m. A hot press-formed article having a good appearance and excellent corrosion resistance, coating adhesion, post-coating corrosion resistance, and weldability has a layer (2) consisting essentially of an iron-zinc solid solution phase atop a base material steel sheet (1). It also has a zinc oxide layer (3) with an average thickness of at most 5 ?m as an uppermost layer, but it does not have a substantial amount of an iron-zinc intermetallic compound phase. The total amount of Al contained in the iron-zinc solid solution layer (2) and the zinc oxide layer (3) is at most 0.Type: GrantFiled: October 21, 2005Date of Patent: July 15, 2008Assignees: Sumitomo Metal Industries, Ltd., Toyota Jodosha Kabushiki Kaisha, Toyoda Iron Works Co., Ltd.Inventors: Yukihiro Yoshikawa, Kazuhito Imai, Kunihiro Fukui, Tamotsu Toki, Shuntaro Sudo, Akira Obayashi, Masanobu Ichikawa
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Publication number: 20060121305Abstract: A hot press-formed article having improved corrosion resistance and coating adhesion when coated is obtained by hot press forming of a zinc-based plated steel material. It has a zinc-based plating layer comprising an iron-zinc solid solution phase and atop it a zinc oxide layer. The average thickness of the zinc oxide layer which is the outermost layer is at most 2 ?m. A hot press-formed article having a good appearance and excellent corrosion resistance, coating adhesion, post-coating corrosion resistance, and weldability has a layer (2) consisting essentially of an iron-zinc solid solution phase atop a base material steel sheet (1). It also has a zinc oxide layer (3) with an average thickness of at most 5 ?m as an uppermost layer, but it does not have a substantial amount of an iron-zinc intermetallic compound phase. The total amount of Al contained in the iron-zinc solid solution layer (2) and the zinc oxide layer (3) is at most 0.Type: ApplicationFiled: October 21, 2005Publication date: June 8, 2006Inventors: Yukihiro Yoshikawa, Kazuhito Imai, Kunihiro Fukui, Tamotsu Toki, Shuntaro Sudo, Akira Obayashi, Masanobu Ichikawa
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Publication number: 20050252262Abstract: Hot press forming of a steel material is made possible by coating the surface of the steel material with a plated layer of zinc or a zinc alloy and forming thereon a barrier layer which prevents the vaporization of zinc even when heated to 700-1000° C. Corrosion resistance can also be guaranteed without requiring post treatment, and hot press forming of high tensile steel sheet and stainless steel sheet is made possible. The barrier layer is formed by forming an upper plated layer, by surface oxidation, by contact with an oxidizing agent, by contact with Zn and an oxidizing agent, by anodic electrolysis, by cathodic electrolysis, or by coating with a ZnO sol.Type: ApplicationFiled: July 22, 2005Publication date: November 17, 2005Inventors: Kazuhito Imai, Tamotsu Toki, Yukihiro Yoshikawa, Masaru Takahashi, Toshinobu Nishibata, Nobusato Kojima
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Publication number: 20040166360Abstract: Hot press forming of a steel material is made possible by coating the surface of the steel material with a plated layer of zinc or a zinc alloy and forming thereon a barrier layer which prevents the vaporization of zinc even when heated to 700-1000° C. Corrosion resistance can also be guaranteed without requiring post treatment, and hot press forming of high tensile steel sheet and stainless steel sheet is made possible. The barrier layer is formed by forming an upper plated layer, by surface oxidation, by contact with an oxidizing agent, by contact with Zn and an oxidizing agent, by anodic electrolysis, by cathodic electrolysis, or by coating with a ZnO sol.Type: ApplicationFiled: December 10, 2003Publication date: August 26, 2004Inventors: Kazuhito Imai, Tamotsu Toki, Yukihiro Yoshikawa, Masaru Takahashi, Toshinobu Nishibata, Nobusato Kojima
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Patent number: 6644276Abstract: A CDI ignition coil unit integrally formed of an exciter coil, pickup coil and control unit is arranged over the upper side of the engine case, at a position on the cylinder head side in proximity to the periphery of the flywheel while an ignition cord is provided to connect a spark plug located at the cylinder head to the CDI ignition coil unit.Type: GrantFiled: September 14, 2001Date of Patent: November 11, 2003Assignee: Suzuki Motor CorporationInventor: Yukihiro Yoshikawa
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Publication number: 20020038648Abstract: A CDI ignition coil unit integrally formed of an exciter coil, pickup coil and control unit is arranged over the upper side of the engine case, at a position on the cylinder head side in proximity to the periphery of the flywheel while an ignition cord is provided to connect a spark plug located at the cylinder head to the CDI ignition coil unit.Type: ApplicationFiled: September 14, 2001Publication date: April 4, 2002Inventor: Yukihiro Yoshikawa
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Patent number: 6336435Abstract: An outboard motor includes an engine disposed above an engine holder in a mounted usable state of the outboard motor, and the engine comprises a crankcase in which a crankshaft extends vertically perpendicularly, a cylinder block disposed rear side of the crankcase, and a cylinder head disposed rear side of the cylinder block. A starter motor mounted to a front surface of the crank case and an oil filter is further mounted to the crank case at a portion below the starter motor.Type: GrantFiled: May 26, 2000Date of Patent: January 8, 2002Assignee: Suzuki Kabushiki KaishaInventors: Yukihiro Yoshikawa, Takeshi Toyama, Kazuo Mineno
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Patent number: 6336434Abstract: An engine unit of an outboard motor comprises an engine body, a crank case in which a crankshaft is vertically perpendicularly arranged in a usable mounted state of the outboard motor, a cylinder block which is disposed to a rear side of the crank case and in which cylinders are arranged, a cylinder head disposed to a rear side of the cylinder block, a magnet device mounted to a top end portion of the crankshaft projecting upward and comprising a stator and a flywheel to which a rotor is integrally formed. In the engine unit, the crankshaft is supported by a bearing boss disposed to a mating portion of the cylinder block and the crank case through a bearing means and an oil seal is disposed between the bearing boss and the bearing means, and the magnet device is mounted to the engine body through the stator through a mounting portion. A diameter of the mounting portion of the stator is to be larger than an outer diameter of the oil seal.Type: GrantFiled: May 18, 2000Date of Patent: January 8, 2002Assignee: Suzuki Kabushiki KaishaInventors: Nobuyuki Shomura, Yukihiro Yoshikawa, Kazuo Mineno, Takeshi Toyama
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Patent number: 6334420Abstract: An outboard motor comprises an engine holder, an engine disposed above the engine holder in a mounted usable state of the outboard motor, the engine being an in-line multi-cylinder type and comprising a crankcase in which a crankshaft extends vertically perpendicularly, a cylinder block disposed rear side of the crankcase, and a cylinder head disposed rear side of the cylinder block, an oil pan disposed below the engine holder, an electrical equipment, and an electrical equipment holder having an electrical equipment holding portion for holding the electrical equipments. The electrical equipment holder is mounted to the engine through a fixing portion, and the electrical equipment holding portion and the fixing portion are integrally formed of an elastic material.Type: GrantFiled: May 30, 2000Date of Patent: January 1, 2002Assignee: Suzuki Kabushiki KaishaInventors: Yukihiro Yoshikawa, Nobuyuki Shomura
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Patent number: 6334419Abstract: An outboard motor generally comprises an engine holder, an engine disposed above the engine holder, an oil pan disposed below the engine holder, and an engine cover covering the engine holder, the engine and the oil pan so as to define a space between the engine and the engine cover. The engine includes a crankcase in which a crankshaft extends vertically perpendicularly in a usable state of the outboard motor, a cylinder block disposed rear side of the crankcase, a cylinder head disposed rear side of the cylinder block, an intake unit disposed to one surface side of the engine, an exhaust unit disposed to another one surface side thereof and arranged so as to project outward from the another one surface side of the engine as an exhaust projection portion, and an electrical equipment part.Type: GrantFiled: May 12, 2000Date of Patent: January 1, 2002Assignee: Suzuki Kabushiki KaishaInventors: Nobuyuki Shomura, Yukihiro Yoshikawa, Kazuo Mineno, Naoki Kawasaki