Patents by Inventor Masaru Kawai
Masaru Kawai 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).
-
Patent number: 10788003Abstract: It is an object of the present invention to provide a high-pressure fuel supply pump having a pump body capable of improving corrosion resistance and weldability and being manufacturable by forging. Therefore, in the high-pressure fuel supply pump having a metal pump body forming a pressurizing chamber, the pump body is made of a steel material containing 12% to 18% of Cr and 3% to 7% of Ni, and the pump body has a forging surface on a part of the outer peripheral surface.Type: GrantFiled: March 10, 2017Date of Patent: September 29, 2020Assignee: Hitachi Automotive Systems, Ltd.Inventors: Minoru Hashida, Atsushi Hohkita, Masayuki Suganami, Satoshi Usui, Masaru Kawai, Arata Kagiyama
-
Publication number: 20200165998Abstract: Provided are a flow volume control device capable of securing a strength withstanding a high fuel pressure, and a method for manufacturing the flow volume control device. A fuel injection valve 1 includes a movable element 102 and a nozzle holder 101 that is positioned on the outer peripheral side of the movable element 102 and holds the movable element 102 inside in a radial direction. The nozzle holder 101 is molded using precipitation hardening stainless steel as a material. In addition, the manufacturing method includes forging and molding a material by forging using the precipitation hardening stainless steel as the nozzle holder 101, performing solution thermal treatment on the material after the forging and molding step, and performing precipitation hardening thermal treatment on the material after the solution thermal treatment, and finishing and molding the material after the precipitation hardening thermal treatment.Type: ApplicationFiled: July 17, 2018Publication date: May 28, 2020Inventors: Takao MIYAKE, Masaru KAWAI, Masashi SUGAYA, Yasuo NAMAIZAWA
-
Publication number: 20190157179Abstract: It is possible to improve heat dissipation of a semiconductor circuit to be inserted into a case. A case into which a semiconductor circuit is inserted, the case including: a heat dissipating portion having, on an inner side, a contact surface coming in contact with the semiconductor circuit; a thin portion formed to surround the contact surface and formed to be thinner than the heat dissipating portion; and a recess formed between the thin portion and the heat dissipating portion and recessed with respect to the contact surface, in which an inner surface of the recess is arranged between the contact surface and an inner surface of the thin portion in a thickness direction of the case.Type: ApplicationFiled: March 10, 2017Publication date: May 23, 2019Inventors: Shinichi FUJINO, Takashi KUBOKI, Masaru KAWAI
-
Publication number: 20190128229Abstract: It is an object of the present invention to provide a high-pressure fuel supply pump having a pump body capable of improving corrosion resistance and weldability and being manufacturable by forging. Therefore, in the high-pressure fuel supply pump having a metal pump body forming a pressurizing chamber, the pump body is made of a steel material containing 12% to 18% of Cr and 3% to 7% of Ni, and the pump body has a forging surface on a part of the outer peripheral surface.Type: ApplicationFiled: March 10, 2017Publication date: May 2, 2019Inventors: Minoru HASHIDA, Atsushi HOHKITA, Masayuki SUGANAMI, Satoshi USUI, Masaru KAWAI, Arata KAGIYAMA
-
Publication number: 20170260945Abstract: An object of the present invention is to provide a fuel rail which can realize weight reduction while enhancing the strength of a cross-hole portion. A fuel rail for an internal combustion engine according to the present invention includes a cylindrical fuel rail body 1 and an injector mounting portion 2 in which a hole 2d to supply a fuel to an injector is formed, and the injector is mounted. The injector mounting portion 2 is integrally molded in the fuel rail body 1 such that the fuel supply hole 2d crosses a center hole 1a of the fuel rail body 1. plurality of injector mounting portions 2 is included along a longitudinal direction of the fuel rail body 1. A thickness of a root portion of the injector mounting portion 2 is thicker than a thickness of the fuel rail body 1 disposed between two adjacent injector mounting portions 2.Type: ApplicationFiled: July 10, 2015Publication date: September 14, 2017Inventors: Masahiro SOMA, Hiroshi ONO, Masaru KAWAI, Shinya NAKATANI, Keiichi URAKI
-
Publication number: 20170226978Abstract: Provided is a fuel rail that can achieve a reliable seal between a rail main unit and a cup, involving a short welding distance or a reduced amount of a brazing filler metal. In the fuel rail, a rail main unit 2 has a central hole and a rail main unit-side communication hole 10 that provides communication between the central hole and an outside of the rail main unit 2. An injector receiving member 5 has an injector insertion hole 7 into which an injector is inserted. The injector receiving member 5 is mounted in the rail main unit 2 such that the rail main unit-side communication hole 10 and the injector insertion hole 7 communicate with each other. The injector receiving member 5 has an injector receiving member-side communication hole 9 that provides communication between the rail main unit-side communication hole 10 and the injector insertion hole 7.Type: ApplicationFiled: September 4, 2015Publication date: August 10, 2017Inventors: Masahiro SOMA, Hiroshi ONO, Keiichi URAKI, Masaru KAWAI, Shinya NAKATANI
-
Patent number: 7676902Abstract: In order to realize a method of forming a rotor core that improves the productivity and enhances the product accuracy, a forming method of a rotor that is equipped with both permanent-magnet fastener on the inner perimetric end of the magnetic pole claw of the rotor core and tapered surface on the outer perimetric end on one end of the magnetic pole claw in the circumferential direction. By constraining the inner perimetric surface of the magnetic pole claw by a die and applying a forming pressure in the radial direction, the tapered surface on the outer perimetric end of the magnetic pole claw and permanent-magnet fastener on the inner perimetric end can be formed at the same time and a rotor core with high product accuracy and mass-productivity is realized.Type: GrantFiled: April 15, 2004Date of Patent: March 16, 2010Assignee: Hitachi, Ltd.Inventors: Masaru Kawai, Kouji Harada, Masayuki Kobayashi, Shinji Yamazaki
-
Publication number: 20040205955Abstract: In order to realize a method of forming a rotor core that improves the productivity and enhances the product accuracy, a forming method of a rotor that is equipped with both permanent-magnet fastener on the inner perimetric end of the magnetic pole claw of the rotor core and tapered surface on the outer perimetric end on one end of the magnetic pole claw in the circumferential direction. By constraining the inner perimetric surface of the magnetic pole claw by a die and applying a forming pressure in the radial direction, the tapered surface on the outer perimetric end of the magnetic pole claw and permanent-magnet fastener on the inner perimetric end can be formed at the same time and a rotor core with high product accuracy and mass-productivity is realized.Type: ApplicationFiled: April 15, 2004Publication date: October 21, 2004Applicant: Hitachi, Ltd.Inventors: Masaru Kawai, Kouji Harada, Masayuki Kobayashi, Shinji Yamazaki
-
Patent number: 5811025Abstract: Coolant compositions are disclosed which include only a minimum amount of metal corrosion inhibitor. The coolant compositions effectively inhibit: (1) metal corrosion; (2) precipitation of the included metal corrosion inhibitor; (3) oxidative deterioration of the included glycol; (4) lowering of the pH value of coolant fluid; and (5) chemical reaction with hard water components. A coolant composition of the invention includes an alkylbenzoic acid (or acids) or a salt (or salts) thereof, a hydrocarbon triazole and an alkali nitrate in addition to a glycol (or glycols) as a base, water and others. It is characteristic that the coolant compositions of the present invention do not include any aliphatic monobasic acids.Type: GrantFiled: October 10, 1995Date of Patent: September 22, 1998Assignee: CCI Co., Ltd.Inventors: Masaru Kawai, Yuji Miyake, Yasuaki Mori
-
Patent number: 5772865Abstract: An electrolytic conversion solution for metal surface treatment comprises (A) a vanadate or a vanadium salt of an inorganic acid and (B) an organic acid having a reducing ability, and has a pH of not less than 7. The electrolytic conversion solution can be employed in a method for electrolytic conversion treatment which comprises the steps of immersing a subject to be treated in the treating solution and then cathodically electrolyzing the subject in the solution. The electrolytic conversion solution is free of any chromate compound and permits the formation of uniform corrosion-resistant film on the surfaces of various kinds of metallic materials without impairing the working environment and causing any environmental pollution.Type: GrantFiled: September 23, 1996Date of Patent: June 30, 1998Assignee: Dipsol Chemicals Co., Ltd.Inventors: Shigemi Tanaka, Akira Hashimoto, Masaru Kawai, Yukihisa Toyoda
-
Patent number: 5653796Abstract: An admixture for cement comprises phosphorous acid and/or a salt thereof or a waste fluid originated from an electroless nickel-plating process which contains phosphorous acid and/or a salt thereof. The admixture is used as a setting accelerator, a rust proofing agent for reinforcing steel or a frost resistive agent for concrete and mortar as hydraulic cement blends. The admixture not only permits improvement of the resulting concrete in the setting-accelerating effect, but also can maintain the compressive strength at a high level while maintaining the bleeding rate at a low level.Type: GrantFiled: March 29, 1996Date of Patent: August 5, 1997Assignee: Dipsol Chemicals Co., Ltd.Inventors: Masaru Kawai, Shuji Igarashi
-
Patent number: 4125390Abstract: A sealing member not adhesive before melting is applied to a portion of a vacuum article to be sealed while maintaining a communication passage between the inside and outside of the article. After mounting the article in an evacuation tank, the tank is evacuated to evacuate the article through the communication passage. Then the sealing member is heated and melted to seal the article airtightly.Type: GrantFiled: April 22, 1977Date of Patent: November 14, 1978Assignee: Ise Electronics CorporationInventors: Masaru Kawai, Azusa Minamidani