Patents by Inventor Ryota Ohashi
Ryota Ohashi 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: 20240110496Abstract: The present invention provides an ohmic heating-type exhaust gas purification catalyst system. The ohmic heating-type exhaust gas purification catalyst system is configured to perform, based on information of temperature of a catalyst bed input from a temperature detector of an ohmic heating-type exhaust gas purification device, electric current pass control including controls of (1) causing an electric current to pass through a pair of electrodes when the temperature of the catalyst bed is equal to or lower than a first threshold temperature T1 set in a range of 350±25° C., (2) not causing an electric current to pass through the pair of electrodes when the temperature of the catalyst bed exceeds the first threshold temperature T1 and is equal to or lower than a second threshold temperature T2 set in a range of 450±25° C.Type: ApplicationFiled: February 1, 2022Publication date: April 4, 2024Inventors: Ryota Onoe, Junichi Hori, Ryosuke Takasu, Tatsuya Ohashi, Shunsuke Oishi
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Patent number: 10598481Abstract: Around a crankshaft (S) supported by a support device (10), a first shape measuring device (31) to a fourth shape measuring device (34) are disposed, and the crankshaft (S) and the first shape measuring device (31) to the fourth shape measuring device (34) are relatively movable in an axial direction (X direction) of the crankshaft (S). The first shape measuring device (31) and the third shape measuring device (33) are disposed so as to face to one X direction and acquire partial shape information (including the other side surfaces in the X direction of counterweights (S2)) of the crankshaft S, and further, the second shape measuring device (32) and the fourth shape measuring device (34) are disposed so as to face to the other X direction and acquire partial shape information (including one side surfaces in the X direction of the counterweights (S2)) of the crankshaft S. This makes it possible to accurately inspect a shape of the crankshaft (S) in a short time.Type: GrantFiled: March 13, 2017Date of Patent: March 24, 2020Assignee: NIPPON STEEL CORPORATIONInventors: Yoshito Isei, Toshiyuki Oyama, Ryota Ohashi
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Publication number: 20190128663Abstract: Around a crankshaft (S) supported by a support device (10), a first shape measuring device (31) to a fourth shape measuring device (34) are disposed, and the crankshaft (S) and the first shape measuring device (31) to the fourth shape measuring device (34) are relatively movable in an axial direction (X direction) of the crankshaft (S). The first shape measuring device (31) and the third shape measuring device (33) are disposed so as to face to one X direction and acquire partial shape information (including the other side surfaces in the X direction of counterweights (S2)) of the crankshaft S, and further, the second shape measuring device (32) and the fourth shape measuring device (34) are disposed so as to face to the other X direction and acquire partial shape information (including one side surfaces in the X direction of the counterweights (S2)) of the crankshaft S. This makes it possible to accurately inspect a shape of the crankshaft (S) in a short time.Type: ApplicationFiled: March 13, 2017Publication date: May 2, 2019Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yoshito ISEI, Toshiyuki OYAMA, Ryota OHASHI
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Patent number: 10132618Abstract: The present invention provides a method for inspecting a crankshaft, which enables accurate detection of defects which occur partially in the crankshaft, such as underfills and dent flaws, by discriminating these defects from bending and torsion over an entire length of the crankshaft.Type: GrantFiled: May 25, 2016Date of Patent: November 20, 2018Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Yoshito Isei, Toshiyuki Oyama, Ryota Ohashi
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Publication number: 20180172436Abstract: The present invention provides a method for inspecting a crankshaft, which enables accurate detection of defects which occur partially in the crankshaft, such as underfills and dent flaws, by discriminating these defects from bending and torsion over an entire length of the crankshaft.Type: ApplicationFiled: May 25, 2016Publication date: June 21, 2018Inventors: Yoshito ISEI, Toshiyuki OYAMA, Ryota OHASHI
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Patent number: 8479503Abstract: An axle driving apparatus for being mounted on the body frame of a vehicle and for independently rotating drive wheel members. The axle driving apparatus includes a first axle driving unit (18L) having a housing (40) and a single axle (20L), the single axle (20L) defining a proximal end portion rotatbly mounted in the housing (40) and a distal end portion extending outwardly from a first side of the housing (40). An enlarged region is defined by the housing (40), with the enlarged region extending substantially perpendicular to the longitudinal axis of the single axle (20L). A hydraulic stepless speed change assembly (22) is disposed within the enlarged region. The speed change assembly (22) includes a hydraulic pump (52) having an input shaft (21) projecting from the enlarged region and includes a hydraulic motor (55) including an output shaft (74) driving connected to the single axle (20L).Type: GrantFiled: August 5, 2011Date of Patent: July 9, 2013Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Robert Abend, Norihiro Ishii, Ryota Ohashi
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Publication number: 20110284310Abstract: An axle driving apparatus for being mounted on the body frame of a vehicle and for independently rotating drive wheel members. The axle driving apparatus includes a first axle driving unit (18L) having a housing (40) and a single axle (20L), the single axle (20L) defining a proximal end portion rotatbly mounted in the housing (40) and a distal end portion extending outwardly from a first side of the housing (40). An enlarged region is defined by the housing (40), with the enlarged region extending substantially perpendicular to the longitudinal axis of the single axle (20L). A hydraulic stepless speed change assembly (22) is disposed within the enlarged region. The speed change assembly (22) includes a hydraulic pump (52) having an input shaft (21) projecting from the enlarged region and includes a hydraulic motor (55) including an output shaft (74) driving connected to the single axle (20L).Type: ApplicationFiled: August 5, 2011Publication date: November 24, 2011Inventors: Robert ABEND, Norihiro Ishii, Ryota Ohashi
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Patent number: 8056670Abstract: A pump unit applied to a working vehicle includes an input shaft operatively connected to an output shaft of a driving source, first and second hydraulic pump bodies, a pump housing that accommodates the first and second hydraulic pump bodies having respective rotational axis lines parallel to the input shaft, a PTO shaft, and a mounting housing that couples the pump housing with the driving source in a state that the pump housing is free from the vehicle frame. The input shaft is supported by the pump and is parallel to the output shaft of the driving source, and extends outwardly from a surface of the pump housing that faces the driving source and is inserted into the mounting housing. The PTO shaft is supported by the pump housing and is parallel to the input shaft and extends outwardly from a surface of the pump housing that is opposite to the surface that faces the driving source.Type: GrantFiled: August 18, 2009Date of Patent: November 15, 2011Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Ryota Ohashi, Hironori Sumomozawa
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Patent number: 8046992Abstract: An axle driving apparatus for being mounted on the body frame of a vehicle and for independently rotating drive wheel members. The axle driving apparatus includes a first axle driving unit (18L) having a housing (40) and a single axle (20L), the single axle (20L) defining a proximal end portion rotatably mounted in the housing (40) and a distal end portion extending outwardly from a first side of the housing (40). An enlarged region is defined by the housing (40), with the enlarged region extending substantially perpendicular to the longitudinal axis of the single axle (20L). A hydraulic stepless speed change assembly (22) is disposed within the enlarged region. The speed change assembly (22) includes a hydraulic pump (52) having an input shaft (21) projecting from the enlarged region and includes a hydraulic motor (55) including an output shaft (74) drivingly connected to the single axle (20L).Type: GrantFiled: February 3, 2009Date of Patent: November 1, 2011Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Robert Abend, Norihiro Ishii, Ryota Ohashi
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Patent number: 8001777Abstract: An axle driving apparatus in which a hydraulic pump and a hydraulic motor which constitute a hydrostatic transmission are disposed on a center section. In a horizontal portion of the center section are provided a pair of linear oil passages in parallel to each other. A pair of arcuate ports are provided on a pump mounting surface formed on the horizontal portion of the center section. The pair of arcuate ports are substantially perpendicular with respect to the direction in which the oil passages extend. The axis of slanting movement of a movable swash plate of the hydraulic pump extends laterally of the vehicle body on which the axle driving apparatus is provided. The rotating direction of an arm provided on a control shaft for slantingly operating the movable swash plate is coincident with the operating direction of a control rod connected with a speed changing member. Thus, the link mechanism for connecting the speed changing member and the control arm for the movable swash plate is simplified.Type: GrantFiled: April 28, 2009Date of Patent: August 23, 2011Assignee: Kanazaki Kokyukoki Mfg. Co., Ltd.Inventors: Kenichi Takada, Ryota Ohashi, Hironori Sumomozawa, Hiroaki Shimizu
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Patent number: 7971435Abstract: A hydraulic transmission comprises a hydraulic pump and a hydraulic motor, which are mounted onto a center section to be fluidly connected to each other through a closed fluid circuit formed in the center section. A neutral valve is connected to the closed fluid circuit. The neutral valve is fitted into an outward opened end of a vertical slanted oil hole of the closed fluid circuit. Alternatively, the neutral valve is fitted into an outward opened end of a straight oil hole having an opposite outward opened end into which a charge check valve is fitted.Type: GrantFiled: April 13, 2007Date of Patent: July 5, 2011Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Hironori Sumomozawa, Shigenori Sakikawa, Ryota Ohashi
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Patent number: 7971675Abstract: A hydraulic transaxle comprises a transaxle casing for supporting left and right axles, a pair of hydraulic motors disposed in the transaxle casing so as to drive the respective left and right axles, hydraulic ports provided in the transaxle casing so as to fluidly connect the pair of hydraulic motors in parallel to a common hydraulic pump, and a system for restricting or canceling differential rotation of the pair of hydraulic motors.Type: GrantFiled: July 29, 2008Date of Patent: July 5, 2011Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Norihiro Ishii, Koji Irikura, Ryota Ohashi, Shigenori Sakikawa
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Patent number: 7934578Abstract: There is provided a working vehicle having first and second hydraulic pump units operatively driven by a driving source and arranged away to each other in a width direction of the vehicle. In the working vehicle, each of the first and second hydraulic pump units includes a pump body; a port block formed with an oil passage for supplying/discharging an operating fluid to/from said pump body; a pump case connected to the port block so as to define a pump body accommodating space for surrounding the pump body; and a pump shaft for rotatably driving the pump body, the pump shaft having an input end operatively connected to said driving source. A drain port for opening the pump body accommodating space outward and a charge suction port for drawing in an oil from an oil tank in order to supply a charge oil to a hydraulic circuit fluidly connecting with the corresponding hydraulic motor unit are provided respectively in first and second assemblies formed by the corresponding pump case and port block.Type: GrantFiled: March 29, 2010Date of Patent: May 3, 2011Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Ryota Ohashi, Manabu Kawakami, Shigenori Sakikawa, Takeaki Nozaki
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Patent number: 7905711Abstract: There is provided a multiple pump unit including a pump shaft, a first pump, a pump housing, a second pump and a fluid passage block connected to one end surface in an axis line direction of the pump housing. One or both contacting surfaces of the pump housing and the fluid passage block is formed with a concave portion for accommodating the second pump. The pump housing is provided with a suction fluid passage guiding hydraulic fluid to a suction opening of the first pump and a first pump discharge fluid passage having a distal end that forms a first pump discharge port. The fluid passage block is provided with a second pump discharge port having the second pump as a hydraulic source.Type: GrantFiled: July 23, 2007Date of Patent: March 15, 2011Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Yasuhisa Mochizuki, Ryota Ohashi
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Patent number: 7896123Abstract: A vehicle includes a first transaxle incorporating a first hydraulic motor for driving a first axle, a pair of second transaxles incorporating respective second hydraulic motors for driving respective second axles, and a pump housing separated from the first transaxle and the pair of second transaxles. The pump housing incorporates a hydraulic pump. The first hydraulic motor and the pair of second hydraulic motors are fluidly connected in series to the hydraulic pump. The second hydraulic motors are fluidly connected in parallel to the hydraulic pump.Type: GrantFiled: July 10, 2006Date of Patent: March 1, 2011Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Ryota Ohashi, Hideaki Okada
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Publication number: 20100257856Abstract: There is provided a pump unit configured to be capable of transmitting a rotational per from a driving power source which is operatively connected thereto to an actuator through a pair of hydraulic fluid lines. The pump unit includes: an input shaft; a hydraulic pump main body; a PTO shaft; a PTO clutch mechanism; and auxiliary pump main body; a suction line; a discharge line; a charge line; a PTO hydraulic fluid line; a pressure-reducing valve; and a resistance valve. The PTO hydraulic fluid line and the charge line are fluidly connected to the primary side and a secondary side of the pressure-reducing valve, respectively.Type: ApplicationFiled: June 22, 2010Publication date: October 14, 2010Inventors: Masahisa Kawamura, Ryota Ohashi, Hironori Sumomozawa, Takeaki Nozaki
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Patent number: 7788919Abstract: The present invention provides a pump unit including at least one hydraulic pump with inlet and outlet ports, a pump case for accommodating the hydraulic pump having an opening through which the hydraulic pump is insertable, and a lid, called a center section, closing the pump case. The center section forms a pair of inlet/outlet passages communicating an end with the inlet and outlet ports of the hydraulic pump and an end opening through a pump case abutting surface of the center section, and a first charging passage by which hydraulic fluid is fed through the pump case abutting surface of the center section. At least one of the pump case and the center section communicates the first charging passage with the pair of inlet/outlet passages via a first hydraulic fluid feeding valve preventing the reverse flow into said first charging passage.Type: GrantFiled: July 29, 2008Date of Patent: September 7, 2010Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Ryota Ohashi, Hironori Sumomozawa
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Publication number: 20100215517Abstract: There is provided a working vehicle having first and second hydraulic pump units operatively driven by a driving source and arranged away to each other in a width direction of the vehicle. In the working vehicle, each of the first and second hydraulic pump units includes a pump body; a port block formed with an oil passage for supplying/discharging an operating fluid to/from said pump body; a pump case connected to the port block so as to define a pump body accommodating space for surrounding the pump body; and a pump shaft for rotatably driving the pump body, the pump shaft having an input end operatively connected to said driving source. A drain port for opening the pump body accommodating space outward and a charge suction port for drawing in an oil from an oil tank in order to supply a charge oil to a hydraulic circuit fluidly connecting with the corresponding hydraulic motor unit are provided respectively in first and second assemblies formed by the corresponding pump case and port block.Type: ApplicationFiled: March 29, 2010Publication date: August 26, 2010Inventors: Ryota OHASHI, Manabu KAWAKAMI, Shigenori SAKIKAWA, Takeaki NOZAKI
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Patent number: 7775309Abstract: There is provided a pump unit including plurality of hydraulic pump bodies respectively fluidly connected to plurality of hydraulic motor bodies, which are disposed away from the pump unit, so as to form closed circuits, the pump unit including: a housing accommodating the plurality of hydraulic pump bodies so that the plurality of hydraulic pump bodies are operatively driven by a common driving source; a charge pump body operatively driven by the driving source; a suction fluid passage fluidly connected to a suction side of the charge pump body; a discharge fluid passage fluidly connected to a discharge side of the charge pump body; a charge passage for replenishing a part of pressurized fluid in the discharge fluid passage into each of the closed circuits; and a working machine operating fluid passage for supplying a part of the pressurized fluid in the discharge fluid passage toward an external hydraulic actuator.Type: GrantFiled: January 16, 2007Date of Patent: August 17, 2010Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Ryota Ohashi, Hironori Sumomozawa, Nobuhisa Kamikawa, Masahisa Kawamura
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Publication number: 20100199656Abstract: A hydraulic pump unit of variable displacement type is disposed away from a pair of hydraulic motor units which are capable of being independently arranged. The pump unit is fluidly-connected to the pair of hydraulic motor units so as to change the outputs of the pair of hydraulic motor units in both forward and reverse rotation directions. The pump unit includes a hydraulic pump body operatively rotated and driven by a driving source, a pump case surrounding the hydraulic pump body, a capacity adjusting mechanism for changing the capacity of the hydraulic pump body, and an actuator for operating the capacity adjusting mechanism. The actuator is controlled based on a manual operation signal corresponding to a manual operation amount.Type: ApplicationFiled: April 23, 2010Publication date: August 12, 2010Inventor: Ryota OHASHI