Patents by Inventor Kenjiro Ikeda
Kenjiro Ikeda 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: 11859676Abstract: A method of manufacturing a constituent member of a constant-velocity joint includes: performing plastic working; and performing hardening of a material. The plastic working is performed with a material of the constituent member heated to a predetermined working temperature range. The hardening of the material is performed by utilizing heat applied for heating to the working temperature range in performing the plastic working as heat for the hardening of the material and cooling the material after performing the plastic working.Type: GrantFiled: December 13, 2019Date of Patent: January 2, 2024Assignee: JTEKT CORPORATIONInventors: Motonori Nakao, Yohei Fukumoto, Koji Hamajima, Keiichi Kamata, Kenjiro Ikeda, Shintaro Yoshinaga
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Publication number: 20200200224Abstract: A method of manufacturing a constituent member of a constant-velocity joint includes: performing plastic working; and performing hardening of a material. The plastic working is performed with a material of the constituent member heated to a predetermined working temperature range. The hardening of the material is performed by utilizing heat applied for heating to the working temperature range in performing the plastic working as heat for the hardening of the material and cooling the material after performing the plastic working.Type: ApplicationFiled: December 13, 2019Publication date: June 25, 2020Applicant: JTEKT CORPORATIONInventors: Motonori NAKAO, Yohei Fukumoto, Koji Hamajima, Keiichi Kamata, Kenjiro Ikeda, Shintaro Yoshinaga
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Patent number: 7918949Abstract: Disclosed is a heat-treated oxidizing agent for gas generating compositions which is obtained by mixing ammonium nitrate with an inorganic compound having as an element one or two or more metal atoms selected from the group consisting of Cu, Fe, Ni, Zn, Co, Mn and Ti and subjecting the mixture to heat treatment, and a gas generating composition containing the same. This invention provides a gas generating composition comprising ammonium nitrate, which can be safely produced, does not change in density with phase transition, and has sufficient combustibility.Type: GrantFiled: March 29, 2007Date of Patent: April 5, 2011Assignee: Nippon Kayaku Kabushiki KaishaInventors: Dairi Kubo, Eishi Sato, Kenjiro Ikeda
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Patent number: 7516701Abstract: A gas generator, including an igniter, a gas generating agent ignited by the igniter and generating gas by burning, and a holder and an AC cup forming therein a gas generating agent storage chamber filled with the gas generating agent. A housing formed of the holder and the AC cup is vertically held and fixed by a pair of plate-like members arranged parallel with each other. The gas generator also includes projections forming deformable areas which are deformed in a direction for decreasing the vertical outside dimensions of the gas generator when the housing is fixed by the pair of plate-like members. Thus, when the gas generator is fixed by the pair of plate-like members in the vertical direction, the dispersion of the outside dimensions of the gas generator can be absorbed.Type: GrantFiled: March 29, 2005Date of Patent: April 14, 2009Assignee: Nippon Kayaku Kabushiki KaishaInventors: Kazumasa Kurita, Kenjiro Ikeda, Akihiko Tanaka
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Patent number: 7377545Abstract: A micro gas generator with an automatic ignition function operated before being weakened by heat without impairing the cleanliness of exhaust gas, comprising gas generating agent, a cup body for filling the gas generating agent therein, and a holder formed integrally with squibs and fixedly sealing the squibs in the cup body, wherein an automatic igniting agent layer is put on the inner surface of the cup body.Type: GrantFiled: August 29, 2003Date of Patent: May 27, 2008Assignee: Nippon Kayaku Kabushiki KaishaInventors: Ryoi Kodama, Kazumasa Kurita, Kenjiro Ikeda
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Publication number: 20070186797Abstract: A gas generator, including an igniter, a gas generating agent ignited by the igniter and generating gas by burning, and a holder and an AC cup forming therein a gas generating agent storage chamber filled with the gas generating agent. A housing formed of the holder and the AC cup is vertically held and fixed by a pair of plate-like members arranged parallel with each other. The gas generator also includes projections forming deformable areas which are deformed in a direction for decreasing the vertical outside dimensions of the gas generator when the housing is fixed by the pair of plate-like members. Thus, when the gas generator is fixed by the pair of plate-like members in the vertical direction, the dispersion of the outside dimensions of the gas generator can be absorbed.Type: ApplicationFiled: March 29, 2005Publication date: August 16, 2007Applicant: NIPPON KAYAKU KABUSHIKE KAISHAInventors: Kazumasa Kurita, Kenjiro Ikeda, Akihiko Tanaka
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Publication number: 20070187011Abstract: Disclosed is a heat-treated oxidizing agent for gas generating compositions which is obtained by mixing ammonium nitrate with an inorganic compound having as an element one or two or more metal atoms selected from the group consisting of Cu, Fe, Ni, Zn, Co, Mn and Ti and subjecting the mixture to heat treatment, and a gas generating composition containing the same. This invention provides a gas generating composition comprising ammonium nitrate, which can be safely produced, does not change in density with phase transition, and has sufficient combustibility.Type: ApplicationFiled: March 29, 2007Publication date: August 16, 2007Inventors: Dairi Kubo, Eishi Sato, Kenjiro Ikeda
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Publication number: 20070163457Abstract: Provided is a squib for attaining a normal ignition of gas generants even when an adhesion state of the plug with enhancers is released by vibration or impact and a gas generator having the squib. A squib including a plug 13, two or more electrode pins 14 which pass through the plug 13 and respectively provided with a head 25, a bridge wire 16 connecting spaces between the respective heads 25 on at least two electrode pins 14 among the electrode pins 14, and ignition charge 10 which are ignited by the bridge wire 16 electrified via the electrode pins 14, wherein the plug 13 is a cured composition of thermosetting resins, the electrode pin 14 in which the bridge wire 16 is connected to the head 25 passes through the plug 13, with a predetermined distance A kept between the head 25 and the plug 13, and at least the head 25 and the bridge wire 16 are enclosed by the ignition charge 10, which is a solid, and fixed to the plug 13.Type: ApplicationFiled: April 15, 2005Publication date: July 19, 2007Applicant: NIPPON KAYAKU KABUSHIKI KAISHAInventors: Yasushi Matsumura, Junya Maruyama, Akitoshi Hironaka, Kazumasa Kurita, Kenjiro Ikeda
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Publication number: 20060162607Abstract: A micro gas generator with an automatic ignition function operated before being weakened by heat without impairing the cleanliness of exhaust gas, comprising gas generating agent, a cup body for filling the gas generating agent therein, and a holder formed integrally with squibs and fixedly sealing the squibs in the cup body, wherein an automatic igniting agent layer is put on the inner surface of the cup body.Type: ApplicationFiled: August 29, 2003Publication date: July 27, 2006Inventors: Ryoi Kodama, Kazumasa Kurita, Kenjiro Ikeda
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Patent number: 6958100Abstract: The present invention provides a gas generant composition comprising a nitrogen-containing organic compound, an oxidizing agent and an additive, wherein a calorific value per mol of gas generated by the combustion of the gas generant is not more than 125 KJ. Also, the present invention provides a gas generator using the said gas generant composition of the present invention. In the gas generant composition that burns at a suitable combustion speed for the gas generator, a calorific value per mol of gas generated by the combustion of the gas generant is suppressed to a specific value as noted above, whereby reduction in size and weight of the gas generator is achieved.Type: GrantFiled: October 5, 2001Date of Patent: October 25, 2005Assignee: Nippon Kayaku Kabushiki-KaishaInventors: Eishi Sato, Dairi Kubo, Kenjiro Ikeda
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Patent number: 6918976Abstract: A gas generating composition which contains a nitrogenous organic compound as a fuel component and generates, at a high gasification rate, a clean gas harmless to the human body. The composition of the present invention comprises a nitrogenous organic compound as a fuel component and ammonium perchlorate and the nitrate of an alkaline metal or alkaline earth metal as oxidizing agents, wherein where a quantity of nitrate required solely for forming an oxide of alkaline metal or alkaline earth metal that can stoichiometrically neutralize hydrogen chloride generated from ammonium perchlorate is taken as 1, a quantity of nitrate of said alkaline metal or alkaline earth metal exceeds 0.9.Type: GrantFiled: October 7, 2003Date of Patent: July 19, 2005Assignee: Nippon Kayaku Kabushiki-KaishaInventors: Eishi Sato, Dairi Kubo, Kenjiro Ikeda
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Publication number: 20040232679Abstract: A gas generator (G) comprising a hollow body (3) packed with gas generant (2) for generating gas by burning, and a holder (5) disposed in an inside of the hollow body (3) and equipped with an igniter device (1). A stepped portion (12) is formed in the hollow body (3), and the holder (3) comprises a holder body (16) and a weldable member (6) partly exposed to an outer circumferential portion of the holder and is formed to fit against the stepped portion (12). The weldable member (6) and the hollow body (3) are welded to seal an interior of the hollow body (3).Type: ApplicationFiled: February 9, 2004Publication date: November 25, 2004Inventors: Dairi Kubo, Junya Maruyama, Kenjiro Ikeda
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Patent number: 6796580Abstract: A gas generator for actuating a vehicle occupant restraint device, including a first hollow body with a bottom and sides, gas generants filled densely in the first hollow body, an electric ignitor formed by housing igniting agents in a second hollow body with a bottom and sides, and closing the second hollow body with a plug, and a holder positioning the second hollow body in a center of the first hollow body and fixing the first hollow body while holding the plug of the electric ignitor. Particularly, a ratio of an empty space to a full volume of a space partitioned by an inner surface of the first hollow body, an outer surface of the second hollow body, and the holder is less than 20% by volume.Type: GrantFiled: February 22, 2002Date of Patent: September 28, 2004Assignee: Nippon Kayaku Kabushiki-KaishaInventors: Dairi Kubo, Junya Amano, Koji Nakamura, Kenjiro Ikeda
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Publication number: 20040159381Abstract: Disclosed is a heat-treated oxidizing agent for gas generating compositions which is obtained by mixing ammonium nitrate with an inorganic compound having as an element one or two or more metal atoms selected from the group consisting of Cu, Fe, Ni, Zn, Co, Mn and Ti and subjecting the mixture to heat treatment, and a gas generating composition containing the same. This invention provides a gas generating composition comprising ammonium nitrate, which can be safely produced, does not change in density with phase transition, and has sufficient combustibility.Type: ApplicationFiled: January 2, 2004Publication date: August 19, 2004Inventors: Dairi Kubo, Eishi Sato, Kenjiro Ikeda
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Publication number: 20040159043Abstract: There is provided: an ignition agent composition comprising a base agent containing substantially no lead component, a combustion improver, and an additive, the composition comprising, as a base agent component, one or more materials selected from the group consisting of 5-nitroaminotetrazole and metal 5-nitroaminotetrazolate; and an igniter using the ignition agent composition.Type: ApplicationFiled: December 4, 2003Publication date: August 19, 2004Inventors: Yasushi Matsumura, Kenjiro Ikeda, Shigeru Maeda
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Publication number: 20040134577Abstract: An igniting agent composition substantially free of a lead compound, characterized in that it comprises a metal power and one or more selected from the group consisting of nitrate salt, basic nitrate salt, a metal oxide and a basic carbonate salt; and an igniter using the igniting agent composition. The igniting agent composition shows no delay in ignition time and no reduction in igniting capability, as compared to conventional lead-containing composition.Type: ApplicationFiled: January 2, 2004Publication date: July 15, 2004Inventors: Yasushi Matsumura, Shigeru Maeda, Eishi Sato, Kenjiro Ikeda
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Publication number: 20040069383Abstract: A gas generating composition which contains a nitrogenous organic compound as a fuel component and generates, at a high gasification rate, a clean gas harmless to the human body. The composition of the present invention comprises a nitrogenous organic compound as a fuel component and ammonium perchlorate and the nitrate of an alkaline metal or alkaline earth metal as oxidizing agents, wherein where a quantity of nitrate required solely for forming an oxide of alkaline metal or alkaline earth metal that can stoichiometrically neutralize hydrogen chloride generated from ammonium perchlorate is taken as 1, a quantity of nitrate of said alkaline metal or alkaline earth metal exceeds 0.9.Type: ApplicationFiled: October 7, 2003Publication date: April 15, 2004Applicant: Nippon Kayaku Kabushiki-KaishaInventors: Eishi Sato, Dairi Kubo, Kenjiro Ikeda
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Publication number: 20040000362Abstract: The present invention provides a gas generant composition comprising a nitrogen-containing organic compound, an oxidizing agent and an additive, wherein a calorific value per mol of gas generated by the combustion of the gas generant is not more than 125KJ. Also, the present invention provides a gas generator using the said gas generant composition of the present invention.Type: ApplicationFiled: April 9, 2003Publication date: January 1, 2004Inventors: Eishi Sato, Dairi Kubo, Kenjiro Ikeda
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Patent number: 6562087Abstract: An automatically ignitable enhancer agent composition comprising: (a) 5-aminotetrazole, (b) a metal powder, (c) at least one compound selected from the group consisting of potassium nitrate, sodium nitrate and strontium nitrate, and (d) molybdenum trioxide, and having a heating value of 4500 J/g or more. Further, the above composition which has an ability to generate gases in an amount of 0.5 mol to 2.0 mol per 100 g of the composition is also disclosed.Type: GrantFiled: December 21, 2001Date of Patent: May 13, 2003Assignee: Nippon Kayaku Kabushiki-KaishaInventors: Ryoi Kodama, Kenjiro Ikeda, Yasushi Matsumura, Eishi Sato, Dairi Kubo
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Patent number: D548133Type: GrantFiled: November 9, 2004Date of Patent: August 7, 2007Assignee: Nippon Kayaku Kabushiki KaishaInventors: Kazumasa Kurita, Kenjiro Ikeda, Akihiko Tanaka