Patents by Inventor Yutaka Niwa
Yutaka Niwa 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).
-
Publication number: 20240270325Abstract: What is provided is an automobile body in which batteries, tires, and liquids containing water and oil are removed from a public road vehicle with superior collision safety, the public road vehicle comprising at least a steel material containing a steel sheet with a tensile strength of 1180 MPa or higher, a non-ferrous metal material, and a resin material, wherein the ratio of a mass mh (kg) of the steel sheet having a tensile strength of 1180 MPa or higher to a mass m (kg) of the automobile body is 9% or higher, and a mass m (kg) of the automobile body and a projected area s (m2) of the automobile body from an upper side satisfy a formula (1) and a formula (2) 6 < s < 11 ( 1 ) m < ( 2 ? 7 ? 2 . 3 ? 7 × s - 8 ? 3 ? 5 ) × 0 ? .98 .Type: ApplicationFiled: May 25, 2022Publication date: August 15, 2024Applicant: NIPPON STEEL CORPORATIONInventors: Masahiro KUBO, Shunji HIWATASHI, Yutaka MIKAZUKI, Koichi SATO, Takahiro AITOH, Kengo TAKEDA, Katsuya NAKANO, Yuri TODA, Shinichiro TABATA, Kodai MURASAWA, Daisuke MAEDA, Kazuo HIKIDA, Kazuhisa KUSUMI, Shingo FUJINAKA, Jun HAGA, Ryo TABATA, Ryoma KATO, Mitsuharu YAMAGATA, Toshiyuki NIWA, Hiromi ASAMA, Junichiro SUZUKI, Yasunori ITO
-
Patent number: 10780775Abstract: A primary metal terminal connects between a fuel pump and a drive circuit through a resin lid. A primary connecting point of the primary metal terminal connected to the drive circuit, is positioned around a drive control IC, and a primary exposed portion of the primary metal terminal, exposed to a receiving space of the resin lid is bent such that the primary exposed portion is resiliently deformable. A secondary metal terminal connects between an external circuit system and the drive circuit through the resin lid. A secondary connecting point of the secondary metal terminal connected to the drive circuit is positioned at a location that is further spaced from the drive control IC in comparison to the primary connecting point, and a secondary exposed portion of the secondary metal terminal exposed to the receiving space has a stiffness higher than a stiffness of the primary exposed portion.Type: GrantFiled: November 21, 2016Date of Patent: September 22, 2020Assignees: DENSO CORPORATION, DENSO KOREA AUTOMOTIVE CORPORATIONInventors: Shingo Fukuoka, Yutaka Niwa, Sanghoon Lee, Hyoyeol Kim
-
Publication number: 20190009671Abstract: A primary metal terminal connects between a fuel pump and a drive circuit through a resin lid. A primary connecting point of the primary metal terminal connected to the drive circuit, is positioned around a drive control IC, and a primary exposed portion of the primary metal terminal, exposed to a receiving space of the resin lid is bent such that the primary exposed portion is resiliently deformable. A secondary metal terminal connects between an external circuit system and the drive circuit through the resin lid. A secondary connecting point of the secondary metal terminal connected to the drive circuit is positioned at a location that is further spaced from the drive control IC in comparison to the primary connecting point, and a secondary exposed portion of the secondary metal terminal exposed to the receiving space has a stiffness higher than a stiffness of the primary exposed portion.Type: ApplicationFiled: November 21, 2016Publication date: January 10, 2019Inventors: Shingo FUKUOKA, Yutaka NIWA, Sanghoon LEE, Hyoyeol KIM
-
Patent number: 10137772Abstract: A total dimension of spacing dimensions of a gap provided by a metal rod on a side opposite to a metal housing in a first assembling structure and a second assembling structure is set to be larger than a difference in a thermal expansion amount between a resin lid main body and the metal housing in a reference radial direction when a temperature exceeds a reference temperature. A total dimension of each of a spacing dimension of a gap provided by the metal rod on a side toward the metal housing and a spacing dimension between a resin protrusion and the metal housing in the first assembling structure and the second assembling structure is set to be larger than a difference in a thermal shrinkage amount between the resin lid main body and the metal housing in the reference radial direction when a temperature falls below the reference temperature.Type: GrantFiled: December 14, 2015Date of Patent: November 27, 2018Assignees: DENSO CORPORATION, DENSO KOREA AUTOMOTIVE CORPORATIONInventors: Yutaka Niwa, Shingo Fukuoka, Sanghoon Lee, Hyoyeol Kim
-
Patent number: 10054088Abstract: A fuel supply device includes a fuel pump, a filter case that houses a fuel filter, and a port member joined to the filter case, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the port member integrally includes a plurality of fuel ports that communicate from inside of the filter case to outside of the filter case.Type: GrantFiled: November 3, 2014Date of Patent: August 21, 2018Assignees: DENSO CORPORATION, KYOSAN DENKI CO., LTD.Inventors: Yutaka Niwa, Hideto Takahashi, Tetsuro Okazono, Hironobu Oki, Akihiro Ishitoya, Akinari Sugiyama
-
Patent number: 10024282Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case includes a case body having a closed bottom shape that forms a housing chamber of the fuel filter, a case cap that covers an aperture of the case body by being joined to the case body, and a residual pressure retention valve that, when the fuel pump is stopped, retains a pressure of the fuel supplied from inside the filter case toward the internal combustion engine, the residual pressure retention valve being disposed at a joint boundary of the case body and the case cap.Type: GrantFiled: November 3, 2014Date of Patent: July 17, 2018Assignees: DENSO CORPORATION, KYOSAN DENKI CO., LTD.Inventors: Yutaka Niwa, Hideto Takahashi, Tetsuro Okazono, Hironobu Oki, Akinari Sugiyama, Akihiro Ishitoya
-
Patent number: 9915234Abstract: A valve structure includes a retention element, a first valve body, and a second valve body. The retention element is mounted to and is retained in a lower portion of a stored object. The stored object includes a pump device that pumps fuel from the fuel tank into the sub tank through a pumping passage that communicates an inside of the sub tank with an outside of the sub tank. The stored object is inserted from an upper portion of the sub tank and housed inside the sub tank. The first valve body is integrally formed with the retention element and extends from the retention element. The first valve body is located at a natural inlet open on the bottom portion of the sub tank. The second valve body is integrally formed with the retention element and extends from the retention element. The second valve body is located on the pumping passage.Type: GrantFiled: November 3, 2014Date of Patent: March 13, 2018Assignee: KYOSAN DENKI CO., LTD.Inventors: Akihiro Ishitoya, Akinari Sugiyama, Yutaka Niwa
-
Publication number: 20170355261Abstract: A total dimension of spacing dimensions of a gap provided by a metal rod on a side opposite to a metal housing in a first assembling structure and a second assembling structure is set to be larger than a difference in a thermal expansion amount between a resin lid main body and the metal housing in a reference radial direction when a temperature exceeds a reference temperature. A total dimension of each of a spacing dimension of a gap provided by the metal rod on a side toward the metal housing and a spacing dimension between a resin protrusion and the metal housing in the first assembling structure and the second assembling structure is set to be larger than a difference in a thermal shrinkage amount between the resin lid main body and the metal housing in the reference radial direction when a temperature falls below the reference temperature.Type: ApplicationFiled: December 14, 2015Publication date: December 14, 2017Inventors: Yutaka NIWA, Shingo FUKUOKA, Sanghoon LEE, Hyoyeol KIM
-
Publication number: 20160265494Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case integrally includes, offset to a specific location of a circumferential direction, a fuel passage that allows fuel to flow downstream from the fuel filter, a discharge passage that discharges flowing fuel in the fuel passage toward the internal combustion engine, and a plurality of opening and closing valves that open and close the fuel passage.Type: ApplicationFiled: November 3, 2014Publication date: September 15, 2016Applicant: DENSO CORPORATIONInventors: Yutaka NIWA, Hideto TAKAHASHI, Tetsuro OKAZONO, Hironobu OKI, Akinari SUGIYAMA, Akihiro ISHITOYA
-
Publication number: 20160252059Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case includes a fuel passage formed downstream of the fuel filter, the fuel passage being in communication with outside of the filter case, and a partition wall that partitions the fuel passage to give the fuel passage a shape which is turned back in an axial direction of the filter case.Type: ApplicationFiled: November 3, 2014Publication date: September 1, 2016Inventors: Yutaka NIWA, Hideto TAKAHASHI, Tetsuro OKAZONO, Hironobu OKI, Akinari SUGIYAMA, Akihiro ISHITOYA
-
Publication number: 20160252060Abstract: A fuel supply device includes a fuel pump, a filter case that houses a fuel filter, and a port member joined to the filter case, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the port member integrally includes a plurality of fuel ports that communicate from inside of the filter case to outside of the filter case.Type: ApplicationFiled: November 3, 2014Publication date: September 1, 2016Applicants: DENSO CORPORATION, KYOSAN DENKI COL, LTD.Inventors: Yutaka NIWA, Hideto TAKAHASHI, Tetsuro OKAZONO, Hironobu OKI, Akihiro ISHITOYA, Akinari SUGIYAMA
-
Publication number: 20160245246Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case includes a case body having a closed bottom shape that forms a housing chamber of the fuel filter, a case cap that covers an aperture of the case body by being joined to the case body, and a residual pressure retention valve that, when the fuel pump is stopped, retains a pressure of the fuel supplied from inside the filter case toward the internal combustion engine, the residual pressure retention valve being disposed at a joint boundary of the case body and the case cap.Type: ApplicationFiled: November 3, 2014Publication date: August 25, 2016Inventors: Yutaka NIWA, Hideto TAKAHASHI, Tetsuro OKAZONO, Hironobu OKI, Akinari SUGIYAMA, Akihiro ISHITOYA
-
Publication number: 20150224873Abstract: A valve structure includes a retention element, a first valve body, and a second valve body. The retention element is mounted to and is retained in a lower portion of a stored object. The stored object includes a pump device that pumps fuel from the fuel tank into the sub tank through a pumping passage that communicates an inside of the sub tank with an outside of the sub tank. The stored object is inserted from an upper portion of the sub tank and housed inside the sub tank. The first valve body is integrally formed with the retention element and extends from the retention element. The first valve body is located at a natural inlet open on the bottom portion of the sub tank. The second valve body is integrally formed with the retention element and extends from the retention element. The second valve body is located on the pumping passage.Type: ApplicationFiled: November 3, 2014Publication date: August 13, 2015Inventors: Akihiro ISHITOYA, Akinari SUGIYAMA, Yutaka NIWA
-
Patent number: 7819637Abstract: A flow-metering valve for metering a flow of liquid has a valve member, a stopper and an electromagnetic driving member. The valve member is reciprocally displaceably arranged between a first position and a second position in the liquid chamber. The stopper is arranged at the second position in the liquid chamber. The electromagnetic driving member generates a magnetic attractive force between the valve member and the stopper to hold the valve member at the second position when the electromagnetic driving member is energized.Type: GrantFiled: December 16, 2005Date of Patent: October 26, 2010Assignee: Denso CorporationInventors: Kaoru Oda, Hiroshi Inoue, Nobuo Ota, Yoshitsugu Inaguma, Yutaka Niwa
-
Publication number: 20060222518Abstract: A flow-metering valve for metering a flow of liquid has a valve member, a stopper and an electromagnetic driving member. The valve m ember is reciprocally displaceably arranged between a first position and a second position in the liquid chamber. The stopper is arranged at the second position in the liquid chamber. The electromagnetic driving member generates a magnetic attractive force between the valve member and the stopper to hold the valve member at the second position when the electromagnetic driving member is energized.Type: ApplicationFiled: December 16, 2005Publication date: October 5, 2006Applicant: DENSO CORPORATIONInventors: Kaoru Oda, Hiroshi Inoue, Nobuo Ota, Yoshitsugu Inaguma, Yutaka Niwa
-
Patent number: 6907857Abstract: A fuel supply and injection system includes a fuel tank, a single electric pump unit, a plurality of fuel injection valves and a piping arrangement. The pump unit is provided in the fuel tank and includes an inlet for taking the fuel in the fuel tank and an outlet for discharging the fuel. The injection valves are secured to an engine main body. Each fuel injection valve includes a nozzle, which is disposed in a corresponding one of combustion chambers and injects the fuel supplied from the pump unit directly into the corresponding one of the combustion chambers. The piping arrangement connects between the electric pump unit and each fuel injection valve. The pump unit is the only pump for supplying the fuel to the fuel injection valves.Type: GrantFiled: November 1, 2002Date of Patent: June 21, 2005Assignee: Denso CorporationInventors: Kimitaka Saito, Yasuhide Tani, Yukio Mori, Shinji Ueda, Yutaka Niwa
-
Patent number: 6857417Abstract: A coating layer made of a lipophobic material is provided in a distal end of a nozzle needle of a fuel injection nozzle. The coating layer is formed by soaking the distal end of the nozzle needle in a liquid state lipophobic material.Type: GrantFiled: June 23, 2003Date of Patent: February 22, 2005Assignee: Denso CorporationInventor: Yutaka Niwa
-
Publication number: 20040000601Abstract: A coating layer made of a lipophobic material is provided in a distal end of a nozzle needle of a fuel injection nozzle. The coating layer is formed by soaking the distal end of the nozzle needle in a liquid state lipophobic material.Type: ApplicationFiled: June 23, 2003Publication date: January 1, 2004Inventor: Yutaka Niwa
-
Publication number: 20030098009Abstract: A fuel supply and injection system includes a fuel tank, a single electric pump unit, a plurality of fuel injection valves and a piping arrangement. The pump unit is provided in the fuel tank and includes an inlet for taking the fuel in the fuel tank and an outlet for discharging the fuel. The injection valves are secured to an engine main body. Each fuel injection valve includes a nozzle, which is disposed in a corresponding one of combustion chambers and injects the fuel supplied from the pump unit directly into the corresponding one of the combustion chambers. The piping arrangement connects between the electric pump unit and each fuel injection valve. The pump unit is the only pump for supplying the fuel to the fuel injection valves.Type: ApplicationFiled: November 1, 2002Publication date: May 29, 2003Inventors: Kimitaka Saito, Yasuhide Tani, Yukio Mori, Shinji Ueda, Yutaka Niwa
-
Patent number: 6163011Abstract: A first member (11) and a second member (12) of metal materials of different kinds are overlapped one upon the other, and the surface of the first member (11) is irradiated with a laser beam to form a melt-solidified portion (2). The melt-solidified portion (2) has a nearly inverted triangular shape in cross section becoming gradually narrow toward the inside from the front surface side of the first member (11), and has a low-hardness layer (21) on the front surface side and a high-hardness layer (22) on the inside. The high-hardness layer (22) has a welded structure in which first layers (23) and second layers (24) having a hardness smaller than that of said first layers (23) are alternatingly laminated in the direction in which the welding proceeds.Type: GrantFiled: December 11, 1998Date of Patent: December 19, 2000Assignee: Denso CorporationInventors: Mamoru Urushizaki, Takashi Ogata, Yoshinori Ohmi, Hideaki Shirai, Yutaka Niwa