Patents by Inventor Kimihiko Mitsuda
Kimihiko Mitsuda 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: 20240125217Abstract: A crude oil extraction pump includes: a production pipe having a tubular shape along an axis extending in a vertical direction; a pump rotor extending in a direction of the axis inside the production pipe; and a pump stator which is provided between the production pipe and the pump rotor to surround the pump rotor, wherein the pump rotor includes a plurality of pump shafts which are sequentially connected in the direction of the axis, an impeller which rotates together with the pump shaft to pump crude oil upward, and a thrust collar which protruding radially outward from the pump shaft, and wherein the pump stator includes a tubular stator body and a thrust pad protruding radially inward from an inner peripheral surface of the stator body and supporting the thrust collar from below to be slidable in the circumferential direction.Type: ApplicationFiled: February 8, 2021Publication date: April 18, 2024Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shuhei Sasaki, Kimihiko Mitsuda
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Patent number: 11873821Abstract: A cylindrical gap is formed between a production pipe and a pump stator, the pump stator has a tubular pump casing that surrounds a plurality of pump bodies, the pump casing is provided with a penetrating portion that penetrates the pump casing in a radial direction and communicates with the gap, and the penetrating portion is formed in a portion of the pump casing that faces a pump body, which is located in an intermediate stage of the plurality of pump bodies, in the radial direction.Type: GrantFiled: February 26, 2020Date of Patent: January 16, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kimihiko Mitsuda, Shuhei Sasaki
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Publication number: 20220205452Abstract: An impeller includes: main vanes which are provided in a front stage section of a hub so as to connect an outer surface of the front stage section and an inner surface of a shroud, and are arranged at intervals in a circumferential direction of the hub, wherein the main vanes generate an oblique flow of crude oil; and splitter vanes which are provided in a rear stage section of the hub so as to be connected to an outer surface of the rear stage section, and are arranged at intervals in the circumferential direction, wherein the splitter vanes generate an axial flow of the crude oil.Type: ApplicationFiled: February 28, 2020Publication date: June 30, 2022Inventors: Kimihiko MITSUDA, Yuki NAKAMURA
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Publication number: 20220170476Abstract: A cylindrical gap is formed between a production pipe and a pump stator, the pump stator has a tubular pump casing that surrounds a plurality of pump bodies, the pump casing is provided with a penetrating portion that penetrates the pump casing in a radial direction and communicates with the gap, and the penetrating portion is formed in a portion of the pump casing that faces a pump body, which is located in an intermediate stage of the plurality of pump bodies, in the radial direction.Type: ApplicationFiled: February 26, 2020Publication date: June 2, 2022Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kimihiko Mitsuda, Shuhei Sasaki
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Publication number: 20220120281Abstract: The pump includes a ring-shaped first inclined surface formed in a portion of a production pipe located above a motor stator and inclined in a direction toward a central axis of the production pipe with respect to a direction from an upper end to a lower end of the production pipe, and a ring-shaped second inclined surface that is formed outside a lower end portion of a pump stator constituting an inner element and comes into surface contact with the first inclined surface.Type: ApplicationFiled: February 26, 2020Publication date: April 21, 2022Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kimihiko Mitsuda, Shuhei Sasaki
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Patent number: 8997734Abstract: The concentrating heat receiver (10) is provided with a casing (41) which has an opening portion (15) into which sunrays are made incident, a heat receiving portion (42) which is accommodated inside the casing (41) so that a working fluid flows therethrough and receive heat from sunrays made incident from the opening portion, thereby raising the temperature of the working fluid, and hanging members (61, 62) in which the upper end sides thereof are coupled to an upper angle (14) and the other end sides thereof are loosely inserted into through holes (44a, 44b) of the casing (41), thereby supporting in a hanging manner the heat receiving portion (42) inside the casing (41).Type: GrantFiled: December 13, 2011Date of Patent: April 7, 2015Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Kimihiko Mitsuda, Yasuharu Yamamoto, Toshiyuki Osada, Masashi Tagawa, Kazuta Kobayashi
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Publication number: 20120160232Abstract: The concentrating heat receiver (10) is provided with a casing (41) which has an opening portion (15) into which sunrays are made incident, a heat receiving portion (42) which is accommodated inside the casing (41) so that a working fluid flows therethrough and receive heat from sunrays made incident from the opening portion, thereby raising the temperature of the working fluid, and hanging members (61, 62) in which the upper end sides thereof are coupled to an upper angle (14) and the other end sides thereof are loosely inserted into through holes (44a, 44b) of the casing (41), thereby supporting in a hanging manner the heat receiving portion (42) inside the casing (41).Type: ApplicationFiled: December 13, 2011Publication date: June 28, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kimihiko MITSUDA, Yasuharu YAMAMOTO, Toshiyuki OSADA, Masashi TAGAWA, Kazuta KOBAYASHI
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Publication number: 20100284796Abstract: In a pump, a main shaft (16) is rotatably supported by ball bearings (14, 15) in a casing (13) having a suction opening (11) and a discharge opening (12), an impeller (1) is connected to an end of the main shaft (16), and a canned motor (18) rotatably drives the impeller (17) through the main shaft (16). A front shroud (44) is provided at the front side in the axial center direction of the impeller (17), and a rear shroud (45) is provided at the rear side in the axial center direction. A predetermined gap (47) facing the axial direction is formed between the casing (13) and the front shroud (44), and sealing units (48, 49) facing the radial direction are provided between the casing (13) and the front shroud (44). This allows for extended life of the pump.Type: ApplicationFiled: January 16, 2009Publication date: November 11, 2010Applicant: MITSUBISIHI HEAVY INDUSTRIES, LTDInventors: Kimihiko Mitsuda, Yasuharu Yamamoto
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Patent number: 7785082Abstract: A rotating shaft is supported by journal bearings that can support without contacting the rotating shaft itself. Then, one end of both shaft end portions of the rotating shaft has a main impeller installed and the other end is provided with a sub impeller. By utilizing a force being generated by rotation of the main impeller, liquid being pumped (fluid being pumped) is sucked in through a suction port and discharged through a discharge port. On the other hand, by utilizing a force being generated by rotation of the sub impeller, fluid is transported to the journal bearings, thereby having the journal bearings support the rotating shaft.Type: GrantFiled: September 9, 2005Date of Patent: August 31, 2010Assignee: Mitsubishi Heavy Industries, LtdInventors: Kimihiko Mitsuda, Yasuharu Yamamoto, Toshiyuki Osada, Zenichi Yoshida
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Patent number: 7300263Abstract: In a pump conveying a supercritical fluid or a liquid are provided stator slots and motor mold members which are charged between the stator slots, so as to have a stator can of a motor driving the pump from the outside thereof. Additionally, by providing a main shaft of a motor driving the pump and bearings supporting the main shaft with clearance-fitting and by tightening inner rings of the bearings to the main shaft in an axial direction, the bearings are fixed to the main shaft.Type: GrantFiled: April 15, 2005Date of Patent: November 27, 2007Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Kimihiko Mitsuda, Yasuharu Yamamoto, Toshiyuki Osada, Masashi Tagawa, Masatake Maekawa
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Publication number: 20060057003Abstract: A rotating shaft is supported by journal bearings that can support without contacting the rotating shaft itself Then, one end of both shaft end portions of the rotating shaft has a main impeller installed and the other end is provided with a sub impeller. By utilizing a force being generated by rotation of the main impeller, liquid being pumped (fluid being pumped) is sucked in through a suction port and discharged through a discharge port. On the other hand, by utilizing a force being generated by rotation of the sub impeller, fluid is transported to the journal bearings, thereby having the journal bearings support the rotating shaft.Type: ApplicationFiled: September 9, 2005Publication date: March 16, 2006Inventors: Kimihiko Mitsuda, Yasuharu Yamamoto, Toshiyuki Osada, Zenichi Yoshida
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Publication number: 20050238510Abstract: In a pump conveying a supercritical fluid or a liquid are provided stator slots and motor mold members which are charged between the stator slots, so as to have a stator can of a motor driving the pump from the outside thereof. Additionally, by providing a main shaft of a motor driving the pump and bearings supporting the main shaft with clearance-fitting and by tightening inner rings of the bearings to the main shaft in an axial direction, the bearings are fixed to the main shaft.Type: ApplicationFiled: April 15, 2005Publication date: October 27, 2005Inventors: Kimihiko Mitsuda, Yasuharu Yamamoto, Toshiyuki Osada, Masashi Tagawa, Masatake Maekawa