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).

  • Publication number: 20220415601
    Abstract: 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: Application
    Filed: June 14, 2022
    Publication date: December 29, 2022
    Inventors: Yutaro Tanabe, Kimihiro Nakayama, Ren Sonoda, Yoshitaka Seki
  • Patent number: 10460900
    Abstract: 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: Grant
    Filed: October 19, 2015
    Date of Patent: October 29, 2019
    Assignee: Hitachi, Ltd.
    Inventor: Yoshitaka Seki
  • Publication number: 20180330910
    Abstract: 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: Application
    Filed: October 19, 2015
    Publication date: November 15, 2018
    Applicant: Hitachi, Ltd.
    Inventor: Yoshitaka SEKI
  • Patent number: 10098215
    Abstract: 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: Grant
    Filed: April 27, 2015
    Date of Patent: October 9, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Nakahara, Shinya Yuda, Takanori Aono, Tetsu Inahara, Yoshitaka Seki, Kouji Akita, Kiyomi Abe
  • Patent number: 9708963
    Abstract: 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: Grant
    Filed: February 23, 2016
    Date of Patent: July 18, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yoshitaka Hayama, Yoshitaka Seki, Hiromi Shibata, Takeru Abe
  • Publication number: 20170188443
    Abstract: 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: Application
    Filed: April 27, 2015
    Publication date: June 29, 2017
    Inventors: Takashi NAKAHARA, Shinya YUDA, Takanori AONO, Tetsu INAHARA, Yoshitaka SEKI, Kouji AKITA, Kiyomi ABE
  • Publication number: 20160245147
    Abstract: 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: Application
    Filed: February 23, 2016
    Publication date: August 25, 2016
    Inventors: Yoshitaka HAYAMA, Yoshitaka SEKI, Hiromi SHIBATA, Takeru ABE
  • Patent number: 8942496
    Abstract: 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: Grant
    Filed: November 4, 2011
    Date of Patent: January 27, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshitaka Seki, Masayuki Yamaguchi
  • Publication number: 20130243345
    Abstract: 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: Application
    Filed: November 4, 2011
    Publication date: September 19, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yoshitaka Seki, Masayuki Yamaguchi
  • Patent number: 8353227
    Abstract: 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: Grant
    Filed: October 28, 2010
    Date of Patent: January 15, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kosei Hayashi, Yasuki Ito, Shunichi Nakajima, Yoshitaka Seki, Terunari Saiki, Masataka Nakano
  • Patent number: 8280006
    Abstract: 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: Grant
    Filed: May 21, 2008
    Date of Patent: October 2, 2012
    Assignee: Hitachi Medical Corporation
    Inventors: Ryozo Takeuchi, Hiroshi Morita, Yoshitaka Seki, Yoshiaki Tsumuraya
  • Patent number: 8006791
    Abstract: 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: Grant
    Filed: December 19, 2006
    Date of Patent: August 30, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hiroshi Nakagome, Yoshitaka Seki, Akira Sonobata
  • Publication number: 20110120257
    Abstract: 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: Application
    Filed: October 28, 2010
    Publication date: May 26, 2011
    Inventors: Kosei Hayashi, Yasuki Ito, Shunichi Nakajima, Yoshitaka Seki, Terunari Saiki, Masataka Nakano
  • Publication number: 20100239071
    Abstract: 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: Application
    Filed: May 21, 2008
    Publication date: September 23, 2010
    Applicant: HITACHI MEDICAL CORPORATION
    Inventors: Ryozo Takeuchi, Hiroshi Morita, Yoshitaka Seki, Yoshiaki Tsumuraya
  • Patent number: 7726382
    Abstract: 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: Grant
    Filed: November 29, 2006
    Date of Patent: June 1, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toshimitsu Suzuki, Yoshitaka Seki, Jun Hariu, Shin Watanabe, Koichi Ota, Satoshi Hirayanagi, Takashi Doi, Yoshiyuki Kurayoshi
  • Patent number: 7712756
    Abstract: 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: Grant
    Filed: March 31, 2006
    Date of Patent: May 11, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yoshitaka Seki, Jun Hariu, Hiroshi Nakagome, Toshihisa Nagashii, Hitoshi Akaoka, Takeshi Wakabayashi
  • Patent number: 7490689
    Abstract: 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: Grant
    Filed: March 29, 2006
    Date of Patent: February 17, 2009
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yoshitaka Seki, Jun Hariu, Hiroshi Nakagome, Toshihisa Nagashii, Hitoshi Akaoka
  • Patent number: 7370902
    Abstract: 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: Grant
    Filed: June 7, 2006
    Date of Patent: May 13, 2008
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yoshitaka Seki, Yoshiyuki Kurayoshi, Kiyoshi Katagiri
  • Patent number: 7331322
    Abstract: 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: Grant
    Filed: March 30, 2006
    Date of Patent: February 19, 2008
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yoshitaka Seki, Hiroshi Nakagome, Toshihisa Nagashii, Hitoshi Akaoka, Jun Hariu
  • Publication number: 20070149105
    Abstract: 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: Application
    Filed: December 19, 2006
    Publication date: June 28, 2007
    Applicant: Honda Motor Co., Ltd.
    Inventors: Hiroshi Nakagome, Yoshitaka Seki, Akira Sonobata