Patents by Inventor Kiyotaka Sakai

Kiyotaka Sakai 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: 20090236168
    Abstract: A motorcycle includes a swing arm, a rear wheel mounted on a leading end of the swing arm, a drive shaft disposed in the swing arm, and a final gear transmission mechanism interposed between the drive shaft and the rear wheel. The final gear transmission mechanism includes a gear case mounted on the leading end of the swing arm for supporting a rear axle; a first end bearing and a second end bearing for supporting a first end and a second end of the rear axle, respectively, a ring gear mounted on the rear axle for transmitting the rotary drive force of an engine to the rear axle; a holding portion for holding the first end of the rear axle in the axial direction of the rear axle; and a fastening member for fastening the second end bearing to the second end of the rear axle.
    Type: Application
    Filed: February 18, 2009
    Publication date: September 24, 2009
    Applicant: Honda Motor Co., Ltd.
    Inventors: Taisuke Nimura, Kiyotaka Sakai, Kenji Kofuji, Yoshinobu Shiomi, Hidetoshi Toyoda, Yasuhiro Higashi
  • Patent number: 7457570
    Abstract: It is an object of the present invention to provide a process unit and an image forming apparatus in which generation of loss of image density due to flying off of developer and the edge effect occurring as a side-effect under developing conditions aimed at improving development performance can be reduced, even when a DC bias development system is adopted, and which can suppress developing density unevenness caused by impact occurring on contact of the teeth of gears in the drive system.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: November 25, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Tadashi Kasai, Hideki Kimura, Tsuyoshi Imanura, Katsumi Masuda, Hideo Yoshizawa, Kiyotaka Sakai
  • Patent number: 7348490
    Abstract: A double wire cord is used in an electro-acoustic converter, such as earphones and headphones, and has a long first cord and a long second cord. For example, the first cord is substantially circular in cross section and has a large diameter, the second cord is also substantially circular in cross section and has a small diameter, and the second cord can be removably housed in the first cord. The second cord is fitted into the fitting groove of the first code and thus housed in the first cord by pressing the side surface of the second cord against the fitting groove of the first cord, so that one wire cord can be easily provided. Therefore, it is convenient at the time of use and storage.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: March 25, 2008
    Assignee: SDK Company
    Inventor: Kiyotaka Sakai
  • Publication number: 20070277995
    Abstract: A double wire cord is used in an electro-acoustic converter, such as earphones and headphones, and has a long first cord and a long second cord. For example, the first cord is substantially circular in cross section and has a large diameter, the second cord is also substantially circular in cross section and has a small diameter, and the second cord can be removably housed in the first cord. The second cord is fitted into the fitting groove of the first code and thus housed in the first cord by pressing the side surface of the second cord against the fitting groove of the first cord, so that one wire cord can be easily provided. Therefore, it is convenient at the time of use and storage.
    Type: Application
    Filed: December 6, 2006
    Publication date: December 6, 2007
    Applicant: SDK Company Limited
    Inventor: Kiyotaka Sakai
  • Patent number: 7272342
    Abstract: An image forming apparatus includes an image forming mechanism and an image bearing member. The image forming mechanism is configured to form an image. The image bearing mechanism is detachably provided to the image forming apparatus. The image bearing mechanism includes an image bearing member configured to bear the image formed by the image forming mechanism, and a through shaft configured to support the image bearing member.
    Type: Grant
    Filed: August 14, 2006
    Date of Patent: September 18, 2007
    Assignee: Ricoh Co., Ltd.
    Inventors: Hiroyuki Nagashima, Kazuyuki Sugihara, Katsumi Masuda, Hideki Kimura, Kiyotaka Sakai, Kazuhisa Sudo, Tsuyoshi Imamura
  • Patent number: 7267350
    Abstract: A steering damper includes a steering damper body installed in a steering system of a vehicle, and having a fluid path therein, and a pressure control valve for controlling a damping force in the steering system, and provided in the fluid path, wherein the pressure control valve controls the damping force so that an increasing rate of the damping force with respect to a steering angular velocity when the steering angular velocity is large is lower than that when the steering angular velocity is small.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: September 11, 2007
    Assignees: Honda Motor Co., Ltd, Kayaba Industry Co., Ltd.
    Inventors: Shinichi Yamada, Takeshi Wakabayashi, Takehiko Nanri, Kiyotaka Sakai
  • Patent number: 7228093
    Abstract: An image forming method and apparatus includes a development device in which two rotary shafts enclosed in respective separate chambers for spirally circulating the developer between the two chambers to supply the developer to a development roller. The development device is provided with an extended circulation enclosure having a fill opening communicating with the two chambers.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: June 5, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Kiyotaka Sakai, Hideo Yoshizawa, Katsumi Masuda, Hideki Kimura, Tsuyoshi Imamura
  • Publication number: 20070104516
    Abstract: A developer bearing member on which grooves slanting in a thrust direction of the developer bearing member cross other grooves reversely slanting relative to the thrust direction, wherein each of the grooves and the reversely slanting grooves is slanting at an angle of greater than 0° and not greater than 40°. Any two adjacent intersections of the grooves and the reversely slanting grooves in the thrust (or peripheral) direction are preferably on different levels in the peripheral (or thrust) direction. The distance between two adjacent intersections in the thrust direction is preferably from 1.3 mm to 4.8 mm. The distance between two adjacent intersections in the thrust direction is preferably from 0.38 Vd/Vi (mm) to 1.1 Vd/Vi (mm). The deviation in depth of grooves present on a 36° arc surface portion of the member is not greater than 15% of the gap between the image bearing member and the developer bearing member.
    Type: Application
    Filed: October 30, 2006
    Publication date: May 10, 2007
    Inventors: Shunji KATOH, Katsumi Masuda, Hideo Yoshizawa, Yoshio Hattori, Hideki Kimura, Kiyotaka Sakai, Kenji Nakajima, Keiichi Yoshida, Akira Azami, Yuji Suzuki
  • Patent number: 7212773
    Abstract: An image forming apparatus whereby it is possible to prevent unevenness in developing density caused by misalignment between the central axes of a driven side rotational coupling section for rotating a developer carrier and a drive side rotational coupling section for transmitting rotational drive force to the driven side rotational coupling section. The driven side rotational coupling section is fixed and the position thereof can be corrected slightly, by engaging the driven side rotational coupling section with a drive side rotational coupling section. A transmission gear is provided which meshes with the driven side rotational coupling section and transmits rotational drive force used to move the surface of the developer carrier. By means of an axle provided on at least one end of the transmission gear engaging with a positioning member on the main body of the image forming apparatus, the developer carrier is positioned in the main body of the image forming apparatus.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: May 1, 2007
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazuhisa Sudo, Kazuyuki Sugihara, Hideo Yoshizawa, Katsumi Masuda, Hideki Kimura, Kiyotaka Sakai, Tsuyoshi Imamura
  • Publication number: 20060275053
    Abstract: An image forming apparatus includes an image forming mechanism and an image bearing member. The image forming mechanism is configured to form an image. The image bearing mechanism is detachably provided to the image forming apparatus. The image bearing mechanism includes an image bearing member configured to bear the image formed by the image forming mechanism, and a through shaft configured to support the image bearing member.
    Type: Application
    Filed: August 14, 2006
    Publication date: December 7, 2006
    Inventors: Hiroyuki Nagashima, Kazuyuki Sugihara, Katsumi Masuda, Hideki Kimura, Kiyotaka Sakai, Kazuhisa Sudo, Tsuyoshi Imamura
  • Publication number: 20060204553
    Abstract: A feed supplement comprising at least one selected from lactic acid bacterium belonging to Lactobacillus gasseri, a crushed product of the lactic acid bacterium, culture of the lactic acid bacterium, residue of the culture of the lactic acid bacterium and a treated product thereof (a concentrate, a pasted product, a dried product, a liquid product, a diluted product, a sterilized product, etc.) and a feed composition comprising the feed supplement.
    Type: Application
    Filed: April 8, 2004
    Publication date: September 14, 2006
    Inventors: Yoshihito Hagawa, Yasunori Kagawa, Kiyotaka Sakai, Takenori Orihashi, Yukimasa Kishimura, Michio Kanbe
  • Patent number: 7043182
    Abstract: A developing device includes a developer carrier and a developer regulating member including a developer regulating part opposing a surface of the developer carrier to regulate the developer carried and conveyed by the developer carrier. The developer regulating member is formed from a single metallic member and includes a space that faces an inner surface of the metallic member. The space extends in a direction perpendicular to a moving direction of the surface of the developer carrier. The developing device can include a cooling device that cools the developer regulating member from an inner surface side of the metallic member facing the space.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: May 9, 2006
    Assignee: Ricoh Company, Ltd.
    Inventors: Kiyotaka Sakai, Kazuyuki Sugihara, Junichi Terai, Kazuhisa Sudo, Katsumi Masuda, Hiroyuki Nagashima, Hideki Kimura
  • Patent number: 7021433
    Abstract: A steering damper in a motorcycle includes a vane partitioning a chamber in a damper housing into two oil chambers, wherein hydraulic fluid flows between the two chambers to generate attenuating force. The steering damper also includes a damper shaft connected to the vane and supporting the vane for rocking motion with respect to the housing, and a hydraulic pressure control valve. The housing is attached to a head pipe, and the damper shaft is attached to a steering system. When the head pipe is to be attached to the housing, the housing is extended rearwardly behind a top bridge, and a linear solenoid for driving and controlling the hydraulic pressure control valve is attached to the housing and disposed below the extension thereof.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: April 4, 2006
    Assignee: Honda Motor Co., Ltd.
    Inventors: Shinichi Yamada, Kiyotaka Sakai, Takehiko Nanri, Takeshi Wakabayashi
  • Publication number: 20060029435
    Abstract: It is an object of the present invention to provide a process unit and an image forming apparatus in which generation of loss of image density due to flying off of developer and the edge effect occurring as a side-effect under developing conditions aimed at improving development performance can be reduced, even when a DC bias development system is adopted, and which can suppress developing density unevenness caused by impact occurring on contact of the teeth of gears in the drive system.
    Type: Application
    Filed: August 5, 2005
    Publication date: February 9, 2006
    Inventors: Tadashi Kasai, Hideki Kimura, Tsuyoshi Imanura, Katsumi Masuda, Hideo Yoshizawa, Kiyotaka Sakai
  • Publication number: 20050281589
    Abstract: An image forming method and apparatus includes a development device in which two rotary shafts enclosed in respective separate chambers for spirally circulating the developer between the two chambers to supply the developer to a development roller. The development device is provided with an extended circulation enclosure having a fill opening communicating with the two chambers.
    Type: Application
    Filed: June 16, 2005
    Publication date: December 22, 2005
    Inventors: Kiyotaka Sakai, Hideo Yoshizawa, Katsumi Masuda, Hideki Kimura, Tsuyoshi Imamura
  • Publication number: 20050111882
    Abstract: An image forming apparatus whereby it is possible to prevent unevenness in developing density caused by misalignment between the central axes of a driven side rotational coupling section for rotating a developer carrier and a drive side rotational coupling section for transmitting rotational drive force to the driven side rotational coupling section. The driven side rotational coupling section is fixed and the position thereof can be corrected slightly, by engaging the driven side rotational coupling section with a drive side rotational coupling section. A transmission gear is provided which meshes with the driven side rotational coupling section and transmits rotational drive force used to move the surface of the developer carrier. By means of an axle provided on at least one end of the transmission gear engaging with a positioning member on the main body of the image forming apparatus, the developer carrier is positioned in the main body of the image forming apparatus.
    Type: Application
    Filed: September 20, 2004
    Publication date: May 26, 2005
    Inventors: Kazuhisa Sudo, Kazuyuki Sugihara, Hideo Yoshizawa, Katsumi Masuda, Hideki Kimura, Kiyotaka Sakai, Tsuyoshi Imamura
  • Publication number: 20050031374
    Abstract: An image forming apparatus includes an image forming mechanism and an image bearing member. The image forming mechanism is configured to form an image. The image bearing mechanism is detachably provided to the image forming apparatus. The image bearing mechanism includes an image bearing member configured to bear the image formed by the image forming mechanism, and a through shaft configured to support the image bearing member.
    Type: Application
    Filed: June 30, 2004
    Publication date: February 10, 2005
    Inventors: Hiroyuki Nagashima, Kazuyuki Sugihara, Katsumi Masuda, Hideki Kimura, Kiyotaka Sakai, Kazuhisa Sudo, Tsuyoshi Imamura
  • Publication number: 20040239069
    Abstract: A steering damper includes a steering damper body installed in a steering system of a vehicle, and having a fluid path therein, and a pressure control valve for controlling a damping force in the steering system, and provided in the fluid path, wherein the pressure control valve controls the damping force so that an increasing rate of the damping force with respect to a steering angular velocity when the steering angular velocity is large is lower than that when the steering angular velocity is small.
    Type: Application
    Filed: May 25, 2004
    Publication date: December 2, 2004
    Applicants: HONDA MOTOR CO., LTD., KAYABA INDUSTRY CO., LTD
    Inventors: Shinichi Yamada, Takeshi Wakabayashi, Takehiro Nanri, Kiyotaka Sakai
  • Publication number: 20040200680
    Abstract: A steering damper in a motorcycle includes a vane partitioning a chamber in a damper housing into two oil chambers, wherein hydraulic fluid flows between the two chambers to generate attenuating force. The steering damper also includes a damper shaft connected to the vane and supporting the vane for rocking motion with respect to the housing, and a hydraulic pressure control valve. The housing is attached to a head pipe, and the damper shaft is attached to a steering system. When the head pipe is to be attached to the housing, the housing is extended rearwardly behind a top bridge, and a linear solenoid for driving and controlling the hydraulic pressure control valve is attached to the housing and disposed below the extension thereof.
    Type: Application
    Filed: March 9, 2004
    Publication date: October 14, 2004
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Shinichi Yamada, Kiyotaka Sakai, Takehiko Nanri, Takeshi Wakabayashi
  • Publication number: 20040114971
    Abstract: A developing device includes a developer carrier and a developer regulating member including a developer regulating part opposing a surface of the developer carrier to regulate the developer carried and conveyed by the developer carrier. The developer regulating member is formed from a single metallic member and includes a space that faces an inner surface of the metallic member. The space extends in a direction perpendicular to a moving direction of the surface of the developer carrier. The developing device can include a cooling device that cools the developer regulating member from an inner surface side of the metallic member facing the space.
    Type: Application
    Filed: September 22, 2003
    Publication date: June 17, 2004
    Inventors: Kiyotaka Sakai, Kazuyuki Sugihara, Junichi Terai, Kazuhisa Sudo, Katsumi Masuda, Hiroyuki Nagashima, Hideki Kimura