Patents by Inventor Shinichi Kurosawa
Shinichi Kurosawa 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: 20240154501Abstract: A motor unit includes a motor and a speed reducer. The motor includes a case including a stator housing, a first motor cover, and a second motor cover. A rotor including a rotor shaft, and a stator including a stator core and a stator coil are provided in the case. An oil filter is provided on an outer surface of the first motor cover. When viewed axially along the rotor shaft, at least a portion of a lower half of the oil filter overlaps with an upper half of the stator core. The speed reducer includes an oil reservoir, and is on a side of the first motor cover. At least one oil pump is provided on an outer surface of the speed reducer.Type: ApplicationFiled: December 18, 2023Publication date: May 9, 2024Inventors: Takuro KAMICHIKA, Shinichi KUROSAWA, Shogo TANINO
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Publication number: 20240120798Abstract: A vehicle driving motor unit for an electric vehicle includes a plurality of motor units each including a motor. The motor includes a rotor including a first oil path, a second motor cover including second and third oil paths connected to an outward oil path, and a cover including a fourth oil path between the first and second oil paths, and a fifth oil path between the first and third oil paths. The second and fourth oil paths communicate with each other via a first gasket. The second and third oil paths include, respectively, open ends connected to an exit end of a first pipe and an inlet end of a second pipe. The third and fifth oil paths communicate with each other via a second gasket.Type: ApplicationFiled: December 18, 2023Publication date: April 11, 2024Inventors: Takuro KAMICHIKA, Shinichi KUROSAWA, Shogo TANINO
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Publication number: 20240120797Abstract: A motor unit includes a motor and a speed reducer. The motor includes a case including a stator housing, a first motor cover, and a second motor cover. Outside the stator housing, a first external pipe includes an outward oil path, a second external pipe includes a return oil path, and the first external pipe and the second external pipe are held by the first motor cover and the second motor cover. A rotor is provided inside the case and held by the first motor cover and the second motor cover. A stator core is provided inside the case and fixed to the stator housing by a shrink fit. The speed reducer includes an oil reservoir which communicates with the return oil path.Type: ApplicationFiled: December 18, 2023Publication date: April 11, 2024Inventors: Takuro KAMICHIKA, Shinichi KUROSAWA, Shogo TANINO
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Patent number: 7296558Abstract: A dual-injector fuel injection engine includes a cylinder block, a cylinder head, an intake port, an intake manifold, a surge tank, an in-cylinder injector, an intake pipe injector, and first and second delivery pipes. The in-cylinder injector is positioned below the intake port, when seen from an axial direction of a crank shaft, and attached to the cylinder head. The intake pipe injector and the second delivery pipe are supported above the intake port, when seen from the axial direction of the crank shaft, by the intake manifold to be close to the intake port.Type: GrantFiled: March 17, 2006Date of Patent: November 20, 2007Assignees: Yamaha Hatsudoki Kabushiki Kaisha, Toyota Jidosha Kabushiki KaishaInventors: Tetsuya Saeki, Shizuo Abe, Tomihisa Tsuchiya, Terutoshi Tomoda, Shinichi Kurosawa, Masaki Katou, Akira Yamaguchi, Yuichi Suzuki
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Publication number: 20060207527Abstract: A dual-injector fuel injection engine includes a cylinder block, a cylinder head, an intake port, an intake manifold, a surge tank, an in-cylinder injector, an intake pipe injector, and first and second delivery pipes. The in-cylinder injector is positioned below the intake port, when seen from an axial direction of a crank shaft, and attached to the cylinder head. The intake pipe injector and the second delivery pipe are supported above the intake port, when seen from the axial direction of the crank shaft, by the intake manifold to be close to the intake port.Type: ApplicationFiled: March 17, 2006Publication date: September 21, 2006Inventors: Tetsuya Saeki, Shizuo Abe, Tomihisa Tsuchiya, Terutoshi Tomoda, Shinichi Kurosawa, Masaki Katou, Akira Yamaguchi, Yuichi Suzuki
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Patent number: 7082916Abstract: A spring seat is formed of an outer spring seat 10k and an inner spring seat 10j formed in a stepped-down shape so as to be positioned lower than the outer spring seat 10k, and a valve spring is formed of an outer spring 37 and an inner spring 36 that is disposed coaxially inside the outer spring 37 and that is larger in spring length than the outer spring 37.Type: GrantFiled: May 8, 2003Date of Patent: August 1, 2006Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Shinichi Kurosawa
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Publication number: 20050172925Abstract: A spring seat is formed of an outer spring seat 10k and an inner spring seat 10j formed in a stepped-down shape so as to be positioned lower than the outer spring seat 10k, and a valve spring is formed of an outer spring 37 and an inner spring 36 that is disposed coaxially inside the outer spring 37 and that is larger in spring length than the outer spring 37.Type: ApplicationFiled: May 8, 2003Publication date: August 11, 2005Inventor: Shinichi Kurosawa
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Patent number: 6708667Abstract: A combustion chamber arrangement for a direct fuel injected internal combustion engine wherein the combustion chamber is formed in part by a recess in the piston head. Fuel is injected into the combustion chamber so as to be introduced on one side of the recess with a spark plug being positioned so that its gap lies diametrically opposite the fuel injector. An arrangement is provided for introducing a swirl to the flow of fuel and the combustion chamber recess is canted so that its lower surface is deeper where the fuel first enters then on the other side so as to improve flame propagation and complete combustion while maintaining a high compression ratio.Type: GrantFiled: March 5, 2001Date of Patent: March 23, 2004Assignee: Yamaha Hatsudoki Kaibushiki KaishaInventors: Yuchi Suzuki, Shinichi Kurosawa, Yuji Kinoshita
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Patent number: 6508226Abstract: An improved combustion chamber configuration for a direct injected internal combustion engine. The cylinder head recess and piston head are configured so as to provide a small clearance volume and accordingly high compression ratios while the shape of the piston head and the arrangement of the cylinder head recess permits a portion of the injected fuel to be directed toward the exhaust valves to cool them and reduce smoke and increase fuel efficiency.Type: GrantFiled: September 21, 2001Date of Patent: January 21, 2003Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Daijirou Tanaka, Shinichi Kurosawa
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Publication number: 20020046728Abstract: An improved combustion chamber configuration for a direct injected internal combustion engine. The cylinder head recess and piston head are configured so as to provide a small clearance volume and accordingly high compression ratios while the shape of the piston head and the arrangement of the cylinder head recess permits a portion of the injected fuel to be directed toward the exhaust valves to cool them and reduce smoke and increase fuel efficiency.Type: ApplicationFiled: September 21, 2001Publication date: April 25, 2002Inventors: Daijiro Tanaka, Shinichi Kurosawa
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Publication number: 20010018904Abstract: A combustion chamber arrangement for a direct fuel injected internal combustion engine wherein the combustion chamber is formed in part by a recess in the piston head. Fuel is injected into the combustion chamber so as to be introduced on one side of the recess with a spark plug being positioned so that its gap lies diametrically opposite the fuel injector. An arrangement is provided for introducing a swirl to the flow of fuel and the combustion chamber recess is canted so that its lower surface is deeper where the fuel first enters then on the other side so as to improve flame propagation and complete combustion while maintaining a high compression ratio.Type: ApplicationFiled: March 5, 2001Publication date: September 6, 2001Inventors: Yuchi Suzuki, Shinichi Kurosawa, Yuji Kinoshita
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Patent number: 6062195Abstract: A combustion chamber and injection strategy for a direct injected internal combustion engine. The combustion chamber is formed with a relatively flat surface across substantially the entire head of the piston to provide a large surface area on which fuel can collect and evaporate. Fuel is injected earlier under lower speed and midrange running than with prior art type of constructions so that the fuel will be longer in the cylinder and have a better chance to vaporize. However, the spray orientation, pattern and timing is such that even though fuel is injected before the exhaust valves are closed at the higher speeds and loads, the fuel will not pass out of the exhaust system.Type: GrantFiled: May 7, 1999Date of Patent: May 16, 2000Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Daijiro Tanaka, Uichitake Uchiyama, Shinichi Kurosawa
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Patent number: 4091545Abstract: For the purpose of utilizing as a sinter raw material a rolling mill sludge with a grease deposit having a high moisture content, which is deposited in a waste water pit of a steel rolling mill, the moisture content of said rolling mill sludge is reduced to from about 1% to 10% by drying said rolling mill sludge at a temperature of from about 120.degree. C to about 200.degree. C, preferably of about 140.degree. C to about 150.degree.Type: GrantFiled: July 8, 1977Date of Patent: May 30, 1978Assignee: Nippon Kokan Kabushiki KaishaInventors: Tetsuo Izawa, Shuji Kajikawa, Koji Satomi, Koichiro Nakano, Shinichi Kurosawa, Keitaro Hirai, Yuichi Tsukada