Patents by Inventor Yoshitaka Seki
Yoshitaka Seki 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: 20220415601Abstract: An X-ray tube device capable of preventing a holder holding a bearing from suffering damage, and an X-ray CT apparatus including the X-ray tube device are provided. The X-ray tube device includes: a cathode that produces an electron beam; an anode that produces X rays upon irradiation with the electron beam; a rotating portion that supports and rotates the anode; bearings that are placed at a predetermined distance from each other in a direction of a rotation axis of the rotating portion, each of the bearings having an outer ring and an inner ring between which rolling elements are sandwiched; and a holder that holds the outer rings. The holder has an inner wall that is spaced from an edge of the outer ring.Type: ApplicationFiled: June 14, 2022Publication date: December 29, 2022Inventors: Yutaro Tanabe, Kimihiro Nakayama, Ren Sonoda, Yoshitaka Seki
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Patent number: 10460900Abstract: There is provided an X-ray tube device having a configuration for preventing peeled-off solid lubrication films from scattering in an X-ray tube even when the solid lubrication film peels off a rotary bearing. The X-ray tube device includes: an anode (212) that is irradiated with an electron beam, thereby emitting X-rays; a rotary bearing (304) that rotatably supports the anode (212); a solid lubrication film which is formed on a front surface of the rotary bearing (304) and into which a ferromagnet is mixed from the rotary bearing (304); and an attractor (303) which attracts, with a magnetic force, the solid lubrication film that peels off the rotary bearing (304).Type: GrantFiled: October 19, 2015Date of Patent: October 29, 2019Assignee: Hitachi, Ltd.Inventor: Yoshitaka Seki
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Publication number: 20180330910Abstract: There is provided an X-ray tube device having a configuration for preventing peeled-off solid lubrication films from scattering in an X-ray tube even when the solid lubrication film peels off a rotary bearing. The X-ray tube device includes: an anode (212) that is irradiated with an electron beam, thereby emitting X-rays; a rotary bearing (304) that rotatably supports the anode (212); a solid lubrication film which is formed on a front surface of the rotary bearing (304) and into which a ferromagnet is mixed from the rotary bearing (304); and an attractor (303) which attracts, with a magnetic force, the solid lubrication film that peels off the rotary bearing (304).Type: ApplicationFiled: October 19, 2015Publication date: November 15, 2018Applicant: Hitachi, Ltd.Inventor: Yoshitaka SEKI
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Patent number: 10098215Abstract: A learning unit in learning mode generates a cluster from a cluster analysis of data formed from frequency constituent data and state data, obtained from a sensor unit. An abnormality calculation unit computes, as abnormalities, the minimum values among distances to surfaces of the clusters of the data formed from the frequency constituent data and the state data, obtained when in predictive fault indicator sensing mode. A predictive fault indicator determination unit determines a predictive fault indicator of an X-ray tube by comparing the abnormalities with a predetermined threshold.Type: GrantFiled: April 27, 2015Date of Patent: October 9, 2018Assignee: Hitachi, Ltd.Inventors: Takashi Nakahara, Shinya Yuda, Takanori Aono, Tetsu Inahara, Yoshitaka Seki, Kouji Akita, Kiyomi Abe
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Patent number: 9708963Abstract: An exhaust device includes left and right exhaust pipes and mufflers connected to a downstream side of the left and right exhaust pipes. The pair of left and right exhaust pipes respectively includes a merging portion. A catalyst is provided to the merging portion respectively. The pair of left and right exhaust pipes respectively includes, on a downstream side of the catalyst, a branching portion that has one side thereof extending to the muffler and the other side thereof extending to a connecting pipe. An oxygen sensor is provided to one side on a downstream side of the pair of left and right branching portions.Type: GrantFiled: February 23, 2016Date of Patent: July 18, 2017Assignee: HONDA MOTOR CO., LTD.Inventors: Yoshitaka Hayama, Yoshitaka Seki, Hiromi Shibata, Takeru Abe
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Publication number: 20170188443Abstract: A learning unit in learning mode generates a cluster from a cluster analysis of data formed from frequency constituent data and state data, obtained from a sensor unit. An abnormality calculation unit computes, as abnormalities, the minimum values among distances to surfaces of the clusters of the data formed from the frequency constituent data and the state data, obtained when in predictive fault indicator sensing mode. A predictive fault indicator determination unit determines a predictive fault indicator of an X-ray tube by comparing the abnormalities with a predetermined threshold.Type: ApplicationFiled: April 27, 2015Publication date: June 29, 2017Inventors: Takashi NAKAHARA, Shinya YUDA, Takanori AONO, Tetsu INAHARA, Yoshitaka SEKI, Kouji AKITA, Kiyomi ABE
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Publication number: 20160245147Abstract: An exhaust device includes left and right exhaust pipes and mufflers connected to a downstream side of the left and right exhaust pipes. The pair of left and right exhaust pipes respectively includes a merging portion. A catalyst is provided to the merging portion respectively. The pair of left and right exhaust pipes respectively includes, on a downstream side of the catalyst, a branching portion that has one side thereof extending to the muffler and the other side thereof extending to a connecting pipe. An oxygen sensor is provided to one side on a downstream side of the pair of left and right branching portions.Type: ApplicationFiled: February 23, 2016Publication date: August 25, 2016Inventors: Yoshitaka HAYAMA, Yoshitaka SEKI, Hiromi SHIBATA, Takeru ABE
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Patent number: 8942496Abstract: Provided is an image processing apparatus capable of simultaneous reduction in memory capacity and compressibility error. An output image data generating means 11 generates processed image data based on specific reference data and preprocessed image data. Reference data generating means 5 repeatedly executes an identical processing in one term made up of not less than two consecutive frames. When an object frame is a top frame in the term, restored reference data generated by data expanding means 15 is outputted as data expanding means. When the object frame is a second or subsequent frame in the term, simulated specific reference data is generated based on the restored reference data generated by the data expanding means 15 and preprocessed image data of the object frame, and outputted as specific reference data.Type: GrantFiled: November 4, 2011Date of Patent: January 27, 2015Assignee: Sharp Kabushiki KaishaInventors: Yoshitaka Seki, Masayuki Yamaguchi
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Publication number: 20130243345Abstract: Provided is an image processing apparatus capable of simultaneous reduction in memory capacity and compressibility error. An output image data generating means 11 generates processed image data based on specific reference data and preprocessed image data. Reference data generating means 5 repeatedly executes an identical processing in one term made up of not less than two consecutive frames. When an object frame is a top frame in the term, restored reference data generated by data expanding means 15 is outputted as data expanding means. When the object frame is a second or subsequent frame in the term, simulated specific reference data is generated based on the restored reference data generated by the data expanding means 15 and preprocessed image data of the object frame, and outputted as specific reference data.Type: ApplicationFiled: November 4, 2011Publication date: September 19, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Yoshitaka Seki, Masayuki Yamaguchi
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Patent number: 8353227Abstract: A structure for sufficiently spacing a steering handle from a top bridge, thereby greatly improving design flexibility. A relief portion for allowing the deformation of a washer is formed to overlap a second contact surface and adjacent to a first contact surface as viewed in the axial direction of each bolt member. The first contact surface is located so as not to overlap the second contact surface as viewed in the axial direction of each bolt member. Therefore, a bending force acts on the washer to allow the deformation of the washer. That is, the washer can exhibit a spring function to relax the effect of the bending force. As a result, the steering handle can be sufficiently spaced from the top bridge to thereby greatly improve design flexibility.Type: GrantFiled: October 28, 2010Date of Patent: January 15, 2013Assignee: Honda Motor Co., Ltd.Inventors: Kosei Hayashi, Yasuki Ito, Shunichi Nakajima, Yoshitaka Seki, Terunari Saiki, Masataka Nakano
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Patent number: 8280006Abstract: The present invention provides an X-ray tube that improves and stabilizes a withstanding voltage performance and thus ensures the reliability of a product. The present invention is an X-ray tube comprising a cathode for emitting electrons, an anode for emitting an X-ray which an irradiation of the electrons emitted from the cathode causes, and a glass tube for confining the cathode and the anode in a vacuum, wherein an inside surface of the glass tube is covered with a glass thin film having a melting point lower than that of a glass of the glass tube and particles adhered to the glass tube by the glass thin film.Type: GrantFiled: May 21, 2008Date of Patent: October 2, 2012Assignee: Hitachi Medical CorporationInventors: Ryozo Takeuchi, Hiroshi Morita, Yoshitaka Seki, Yoshiaki Tsumuraya
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Patent number: 8006791Abstract: An intake air passage, formed through a motorcycle body frame, reduces changes in pressure within an air routing duct member due to opening and closing of a throttle, and also reduces pipe resonance of the air routing duct member. The air routing duct member extends longitudinally from the intake air passage and directs fresh air to another air passage. The air routing duct member includes openings that communicate with hollow sections provided in a portion of an adjacent support structure, such as an instrumentation support member. When the throttle is opened rapidly, air from the hollow sections is temporarily supplied to the air routing duct member, reducing changes in internal air pressure in the air routing duct member due to throttle operation. Resonance chambers are formed above the air routing duct member, and communicate through communication pipes with a space within the air routing duct member to reduce duct pipe resonance.Type: GrantFiled: December 19, 2006Date of Patent: August 30, 2011Assignee: Honda Motor Co., Ltd.Inventors: Hiroshi Nakagome, Yoshitaka Seki, Akira Sonobata
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Publication number: 20110120257Abstract: A structure for sufficiently spacing a steering handle from a top bridge, thereby greatly improving design flexibility. A relief portion for allowing the deformation of a washer is formed to overlap a second contact surface and adjacent to a first contact surface as viewed in the axial direction of each bolt member. The first contact surface is located so as not to overlap the second contact surface as viewed in the axial direction of each bolt member. Therefore, a bending force acts on the washer to allow the deformation of the washer. That is, the washer can exhibit a spring function to relax the effect of the bending force. As a result, the steering handle can be sufficiently spaced from the top bridge to thereby greatly improve design flexibility.Type: ApplicationFiled: October 28, 2010Publication date: May 26, 2011Inventors: Kosei Hayashi, Yasuki Ito, Shunichi Nakajima, Yoshitaka Seki, Terunari Saiki, Masataka Nakano
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Publication number: 20100239071Abstract: The present invention provides an X-ray tube that improves and stabilizes a withstanding voltage performance and thus ensures the reliability of a product. The present invention is an X-ray tube comprising a cathode for emitting electrons, an anode for emitting an X-ray which an irradiation of the electrons emitted from the cathode causes, and a glass tube for confining the cathode and the anode in a vacuum, wherein an inside surface of the glass tube is covered with a glass thin film having a melting point lower than that of a glass of the glass tube and particles adhered to the glass tube by the glass thin film.Type: ApplicationFiled: May 21, 2008Publication date: September 23, 2010Applicant: HITACHI MEDICAL CORPORATIONInventors: Ryozo Takeuchi, Hiroshi Morita, Yoshitaka Seki, Yoshiaki Tsumuraya
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Patent number: 7726382Abstract: A mold and a die-cast manufacturing method for the die-cast product, in which a main frame which is contiguously formed with a head pipe constitutes a portion of a hollow light-weight-metal-made vehicle-body frame. The mold includes a core for forming an inner space of the hollow vehicle-body frame. The core includes a core body and a plurality of splints mounted on the core body, the splints having approximately elliptical cross-sectional shapes. The long axes direction of ellipses of the splints are set parallel to a mold split surface of the mold. As a result, measurement of the positional accuracy of the splints is facilitated, a clearance between the splint and the mold can decrease by increasing the dimensional accuracy of splint mounting portions of the mold based on sizes of the splints, and the frame can be manufactured with high dimensional accuracy.Type: GrantFiled: November 29, 2006Date of Patent: June 1, 2010Assignee: Honda Motor Co., Ltd.Inventors: Toshimitsu Suzuki, Yoshitaka Seki, Jun Hariu, Shin Watanabe, Koichi Ota, Satoshi Hirayanagi, Takashi Doi, Yoshiyuki Kurayoshi
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Patent number: 7712756Abstract: To arrange a steering damper behind a head pipe in a compact manner while suppressing the influence of the steering damper on an intake duct which penetrates the vicinity of head pipes of a vehicle body frame. A steering damper is arranged between left and right main frames of a vehicle body frame and, at the same time, is arranged above or below an intake duct which penetrates the vicinity of a head pipe of the vehicle body frame.Type: GrantFiled: March 31, 2006Date of Patent: May 11, 2010Assignee: Honda Motor Co., Ltd.Inventors: Yoshitaka Seki, Jun Hariu, Hiroshi Nakagome, Toshihisa Nagashii, Hitoshi Akaoka, Takeshi Wakabayashi
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Patent number: 7490689Abstract: To easily secure a welding length when an opening is formed at a portion in the vicinity of a joint portion between a head pipe portion and a main frame portion. A front opening penetrating through a vehicle body frame across a head pipe portion and a main frame portion. A rib extending across the front opening along a front parting plane of the vehicle body frame. The rib being divided along the front parting plane and the edge portions of the divided rib portions opposing the outer periphery of the main frame portion are integrally joined.Type: GrantFiled: March 29, 2006Date of Patent: February 17, 2009Assignee: Honda Motor Co., Ltd.Inventors: Yoshitaka Seki, Jun Hariu, Hiroshi Nakagome, Toshihisa Nagashii, Hitoshi Akaoka
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Patent number: 7370902Abstract: A cowling structure of a motorcycle having a radiator behind a front wheel, including a cowling which covers a periphery of the radiator from a front side of a handlebar, wherein an opening which extends in the longitudinal direction of the motorcycle is formed in the cowling such that the opening traverses an upper portion of the radiator in a side view, thus allowing air to pass through the opening and thus through the motorcycle in the lateral direction thereof.Type: GrantFiled: June 7, 2006Date of Patent: May 13, 2008Assignee: Honda Motor Co., Ltd.Inventors: Yoshitaka Seki, Yoshiyuki Kurayoshi, Kiyoshi Katagiri
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Patent number: 7331322Abstract: An intake duct structure having an intake path extending forwardly from a cleaner box, penetrating through an area near a head pipe of a vehicle body frame, and opening at a front end portion of a front cowl. During low speed operation of the engine, an intake valve closes a main intake path MR from a front end intake port and opens a sub-intake path SR from a lower portion intake port. On the other hand, during high speed operation of the engine, the intake valve opens the main intake path MR and closes the sub-intake path SR. The lower portion intake port opens forward of a head pipe inside a front cowl and obliquely downwardly toward the rear. With this arrangement, entry of rainwater into the intake path can be minimized during low speed operation of the engine.Type: GrantFiled: March 30, 2006Date of Patent: February 19, 2008Assignee: Honda Motor Co., Ltd.Inventors: Yoshitaka Seki, Hiroshi Nakagome, Toshihisa Nagashii, Hitoshi Akaoka, Jun Hariu
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Publication number: 20070149105Abstract: An intake air passage, formed through a motorcycle body frame, reduces changes in pressure within an air routing duct member due to opening and closing of a throttle, and also reduces pipe resonance of the air routing duct member. The air routing duct member extends longitudinally from the intake air passage and directs fresh air to another air passage. The air routing duct member includes openings that communicate with hollow sections provided in a portion of an adjacent support structure, such as an instrumentation support member. When the throttle is opened rapidly, air from the hollow sections is temporarily supplied to the air routing duct member, reducing changes in internal air pressure in the air routing duct member due to throttle operation. Resonance chambers are formed above the air routing duct member, and communicate through communication pipes with a space within the air routing duct member to reduce duct pipe resonance.Type: ApplicationFiled: December 19, 2006Publication date: June 28, 2007Applicant: Honda Motor Co., Ltd.Inventors: Hiroshi Nakagome, Yoshitaka Seki, Akira Sonobata