Patents by Inventor Ryutaro Abe
Ryutaro Abe 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: 11945235Abstract: There is provided a printing apparatus which includes the following: A printhead including a plurality of nozzles that discharge ink to a print medium. A first detection unit that detects a distance between the printhead and a platen. An adjustment unit that adjusts the distance between the printhead and the platen. An acquisition unit that acquires difference information concerning a difference of a distance between the platen and each of the nozzle on an upstream side and the nozzle on a downstream side in a conveyance direction of the print medium. The adjustment unit adjusts the distance based on a detection result of the first detection unit and the difference information acquired by the acquisition unit.Type: GrantFiled: December 5, 2022Date of Patent: April 2, 2024Assignee: Canon Kabushiki KaishaInventors: Tomohito Abe, Daigo Kuronuma, Ryutaro Takahashi, Naoaki Wada, Noriyuki Aoki, Ryohei Maruyama, Masakazu Nagashima, Toshiaki Yamaguchi
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Patent number: 10000830Abstract: The present invention is to provide a method for manufacturing a martensite-based precipitation strengthening stainless steel, which effectively enables crystal grains to become finer by improving a solution treatment method. The method for manufacturing a martensite-based precipitation strengthening stainless steel containing 0.01 to 0.05 mass % of C, 0.2 mass % or less of Si, 0.4 mass % or less of Mn, 7.5 to 11.0 mass % of Ni, 10.5 to 14.5 mass % of Cr, 1.75 to 2.50 mass % of Mo, 0.9 to 2.0 mass % of Al, less than 0.2 mass % of Ti, and Fe and impurities as a remainder, which is provided by the present invention, includes performing a solid solution treatment at 845 to 895° C. once or more.Type: GrantFiled: September 28, 2015Date of Patent: June 19, 2018Assignee: HITACHI METALS, LTD.Inventors: Ryutaro Abe, Tomonori Ueno, Eiji Shimohira, Gang Han
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Patent number: 9828657Abstract: There is provided an Ni-base super alloy which is used for airplane engines and gas turbines for power generation and has favorable mechanical properties at high temperature. The Ni-base super alloy contains 0.001 to 0.1 mass % of C, 1.0 to 4.0 mass % of Al, 2.0 to 4.5 mass % of Ti, 12.0 to 18.0 mass % of Cr, 11.1 to 18.0 mass % of Co, 1.2 to 12.0 mass % of Fe, 1.5 to 6.5 mass % of Mo, 0.5 to 6.0 mass % of W, 0.1 to 3.0 mass % of Nb, 0.001 to 0.05 mass % of B, 0.001 to 0.1 mass % of Zr, and Ni and impurities as a remainder.Type: GrantFiled: September 28, 2015Date of Patent: November 28, 2017Assignee: HITACHI METALS, LTD.Inventors: Ryutaro Abe, Takehiro Ohno, Shinichi Kobayashi, Tomonori Ueno, Chuya Aoki
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Publication number: 20170275743Abstract: The present invention is to provide a method for manufacturing a martensite-based precipitation strengthening stainless steel, which effectively enables crystal grains to become finer by improving a solution treatment method. The method for manufacturing a martensite-based precipitation strengthening stainless steel containing 0.01 to 0.05 mass % of C, 0.2 mass % or less of Si, 0.4 mass % or less of Mn, 7.5 to 11.0 mass % of Ni, 10.5 to 14.5 mass % of Cr, 1.75 to 2.50 mass % of Mo, 0.9 to 2.0 mass % of Al, less than 0.2 mass % of Ti, and Fe and impurities as a remainder, which is provided by the present invention, includes performing a solid solution treatment at 845 to 895° C. once or more.Type: ApplicationFiled: September 28, 2015Publication date: September 28, 2017Inventors: Ryutaro ABE, Tomonori UENO, Eiji SHIMOHIRA, Gang HAN
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Publication number: 20170275736Abstract: There is provided an Ni-base super alloy which is used for airplane engines and gas turbines for power generation and has favorable mechanical properties at high temperature. The Ni-base super alloy contains 0.001 to 0.1 mass % of C, 1.0 to 4.0 mass % of Al, 2.0 to 4.5 mass % of Ti, 12.0 to 18.0 mass % of Cr, 11.1 to 18.0 mass % of Co, 1.2 to 12.0 mass % of Fe, 1.5 to 6.5 mass % of Mo, 0.5 to 6.0 mass % of W, 0.1 to 3.0 mass % of Nb, 0.001 to 0.05 mass % of B, 0.001 to 0.1 mass % of Zr, and Ni and impurities as a remainder.Type: ApplicationFiled: September 28, 2015Publication date: September 28, 2017Inventors: Ryutaro ABE, Takehiro OHNO, Shinichi KOBAYASHI, Tomonori UENO, Chuya AOKI
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Patent number: 5201878Abstract: A vane pump includes a pump housing formed with a cylindrical inner space, intake ports and exhaust ports, a rotating shaft rotatably supported by the pump housing, a rotor received in the cylindrical inner space to be rotated by the rotating shaft, a cam ring disposed in the cylindrical inner space, a plurality of vanes held by the rotor to define plural pump chambers between the rotor and cam ring. Fluid sucked from the intake ports is pressurized and discharged to the exhaust ports. The vane pump is further provided with first and second pressure chambers and a throttle passage connecting the first and second pressure chambers. Pressurized fluid discharged from one of the exhaust ports is led to one of the two pressure chambers and pressurized fluid discharged form the other of the exhaust ports is led to the other of the pressure chambers while pressurized fluid is taken out from the second pressure chamber to be supplied to a fluid device.Type: GrantFiled: October 8, 1991Date of Patent: April 13, 1993Assignee: Toyoda Koki Kabushiki KaishaInventors: Ryutaro Abe, Yoshiyuki Takeuchi, Michihiro Kitamura
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Patent number: 4964983Abstract: A reservoir used in an automotive power steering system is provided with a first filter disposed within a reservoir body at a location between an inlet and an outlet thereof. The reservoir is further provided with a first guide member for forcing the oil flowed into through the inlet to flow toward the first filter by changing the flow direction of the oil and a second guide member for forcing the oil passed through the first filter to flow toward the outlet by changing the flow direction of the oil. The first guide member is provided with an opening, and a second filter whose mesh is finer than that of the first filter is attached to the opening so as to allow the oil to flow from the inlet to the inside space above the first filter through the second filter. On the other hand, the second guide member is formed with a second opening for allowing the oil passed through the first filter to flow toward the outlet through the second opening.Type: GrantFiled: November 13, 1989Date of Patent: October 23, 1990Assignee: Toyoda Koki Kabushiki KaishaInventors: Ryutaro Abe, Yoshiyuki Takeuchi, Kouichi Shibata
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Patent number: 4917139Abstract: There is disclosed a flow control apparatus for a power steering device in which an operating fluid discharged from a pump is delivered to a power steering device through a restricted passage, and the fluid flow is adjusted by a spool valve movable in response to the pressure difference across the restricted passage. The spool valve contains a first relief valve operating at a first setting pressure in response to the fluid pressure transmitted from a passage located at the downstream side of the restricted passage through a connecting passage. The spool valve also contains a second relief valve operating at a second setting pressure higher than the first setting pressure, but lower than a allowable maximum load pressure, in response to the fluid pressure directly transmitted from a chamber located at the upstream side of the restricted passage. During operations under normal temperature conditions, the first relief valve operates when the load pressure reaches the first setting pressure.Type: GrantFiled: June 20, 1989Date of Patent: April 17, 1990Assignee: Toyoda Koki Kabushiki KaishaInventors: Tadataka Narumi, Ryutaro Abe, Susumu Honaga, Yoshiyuki Toyama
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Patent number: 4347047Abstract: A vane type hydraulic pump for use in a power steering apparatus comprising a pump housing receiving therein a non-rotatable cam ring and first and second non-rotatable but axially slidable side plates. A pump rotor rotatable integrally with a drive shaft is received in an internal cam bore of the cam ring and, when rotated, delivers pressurized fluid to a discharge port connected to the power steering apparatus. The first and second side plates define at a contact portion therebetween a radial low pressure cavity, which is fluidically communicated with an axial low pressure hole receiving working fluid from a pump reservoir and bypassed fluid from a flow volume control valve. A branch member is provided on one of the side plates to smoothly branch the fluid flow flowing in the low pressure hole in the axial direction into the flow flowing along the low pressure cavity in the radial direction.Type: GrantFiled: August 14, 1980Date of Patent: August 31, 1982Assignees: Toyoda Koki Kabushiki Kaisha, Toyota Jidosha Kogyo Kabushiki KaishaInventors: Shookichi Shiozawa, Tomomi Nakayama, Kyosuke Haga, Ryutaro Abe, Yoshiyuki Takeuchi
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Patent number: 4220072Abstract: A power steering apparatus comprises a main valve member rotating in response to the action of a fluid pressure motor supplementing manual steering torque and a flap valve member rotating in response to the manual steering torque and mounted within the main valve member. The main valve member and the flap valve member are operable to control flow of fluid under pressure supplied into and discharged from the fluid pressure motor. A plunger member is slidably received in the flap valve member and is provided with an anti-vibration member. A passage communicating with a fluid supply port is provided for applying fluid under pressure to the plunger member to urge the anti-vibration member against the main valve member.Type: GrantFiled: August 15, 1978Date of Patent: September 2, 1980Assignees: Toyoda Koki Kabushiki Kaisha, Toyota Jidosha Kogyo Kabushiki KaishaInventors: Akio Numazawa, Minoru Kawabata, Ryutaro Abe, Mikio Suzuki, Yoshiharu Inaguma