Patents by Inventor Kenji Sakakibara

Kenji Sakakibara 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: 20050198952
    Abstract: In a hydrostatic continuously variable transmission, a hydraulic pump and a hydraulic motor are connected through a hydraulic closed circuit and the capacity of the hydraulic motor is varied to vary the speed continuously. The transmission has a valve spool in a spool hole made in a transmission output shaft which rotatably holds the hydraulic pump and hydraulic motor; and the transmission output shaft incorporates outer branch oil paths which are connected with an outer passage and open to the spool hole, and an inner branch oil path which is connected with an inner passage and open to the spool hole.
    Type: Application
    Filed: March 11, 2005
    Publication date: September 15, 2005
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yoshihiro Yoshida, Kazuhiko Nakamura, Kenji Sakakibara, Yoshihisa Kanno, Toshimasa Mitsubori
  • Patent number: 6937017
    Abstract: The present invention is intended to provide a magnetic pole, a magnet apparatus, and a magnetic resonance imaging apparatus that the magnetic structure of the magnet apparatus for generating a uniform magnetic field is formed in a lower burst mode, and the profitability is increased, and at the same time, the uniformity of the magnetic field is improved. According to the present invention, the magnetic poles arranged opposite to each other across a measuring space have at least one of a plurality of hollows and a single hollow having a shape continuously changing on the section perpendicular to the direction of the magnetic field formed in the measuring space and particularly in order to make the magnetic field uniform, the arrangement of the plurality of hollows and the shape of the single hollow are adjusted. The magnet apparatus and magnetic resonance imaging apparatus of the present invention are structured as mentioned above.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: August 30, 2005
    Assignees: Hitachi, Ltd., Hitachi Medical Corporation
    Inventors: Shigeru Kakugawa, Yoshihide Wadayama, Hirotaka Takeshima, Takeshi Yatsuo, Kenji Sakakibara
  • Publication number: 20050145414
    Abstract: The present invention is characterized in that in a metal-core multilayer printed wiring board (1) which is obtained by forming one or more of at least inner layers of a laminate having a insulating layer and a conductor layer stacked alternately from a metal plate and has the metal plate as a core, the metal plate (13) is disposed below a site on which a heating element (10) is to be mounted, a surface layer over which the heating element (10) is to be mounted is connected to the metal plate (13) of the inner layer via a BVH (12) and a heat radiation layer (14) is formed over the surface layer. The present invention makes it possible to efficiently radiate heat, which has been released from the heating element, to the outside of the printed wiring board without impairing the packaging density of circuits and at the same time, to mount another element on the side opposite to the side on which the heating element exists.
    Type: Application
    Filed: January 28, 2004
    Publication date: July 7, 2005
    Applicants: CMK CORPORATION, ADVICS CO., LTD.
    Inventors: Hiroshi Tohkairin, Kenji Sakakibara, Hideki Kabune
  • Publication number: 20050144940
    Abstract: A hydrostatic continuously variable transmission includes a hydraulic pump and a hydraulic motor, supported by a common support shaft, and hydraulically connectable to each other through a hydraulic circuit including an inside passage and an outside passage. A clutch device includes a valve spool, which is slidably disposed in a hollow internal bore formed in the transmission support shaft. The valve spool is operable to make or interrupt fluid communication between the inside passage and the outside passage, according to the movement thereof. A governor mechanism is mounted to a pump casing of the hydraulic pump, and the governor mechanism generates a governor force corresponding to the rotating speed of a clutch cap, by use of centrifugal force generated by the rotation thereof. The valve spool is effectively moved in the hollow internal bore, using the governor force generated from the governor mechanism, to engage or disengage the clutch.
    Type: Application
    Filed: November 16, 2004
    Publication date: July 7, 2005
    Applicant: Honda Motor Co., Ltd.
    Inventors: Yoshihiro Yoshida, Nobuyuki Yakigaya, Yoshihisa Kanno, Kenji Sakakibara, Yoshiaki Tsukada, Takashi Ozeki, Takehiko Nanri
  • Patent number: 6909348
    Abstract: A magnet device provided with a shield current carrying means in which two sets of magneto-static field generating sources for generating magnetic fields directed towards a first direction are disposed facing each other across a finite region and at least one set of the magneto-static field generating sources are disclosed on at least two almost concentric circles. A first plane includes a first axis, a second axis and a first point. The first point is a point of insertion between the first axis parallel to the first direction and passing almost through the center of the shield current carrying means. The second axis crosses at right angles to the first axis and is spaced almost equal distance from the two sets of the generating sources. The alternately arranged positive and negative current carrying directions of the shield current carrying means are set in the order of increasing value of ?n.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: June 21, 2005
    Assignees: Hitachi, Ltd., Hitachi Medical Corporation
    Inventors: Shigeru Kakugawa, Katsunori Azuma, Tsuyoshi Wakuda, Yoshihide Wadayama, Hirotaka Takeshima, Kenji Sakakibara, Takeshi Yatsuo, Takao Honmei
  • Publication number: 20050033164
    Abstract: An endoscope-like image taking method of the present invention includes a preparation step of providing at least one peculiar index, which can be discriminated from other portions on an MR image, at the tip of a catheter, a first step (S1) of previously inserting a metal guide wire for guiding the catheter into a body cavity of a patient into which the catheter is inserted, a second step (S2) of inserting the catheter into the body cavity along the guide wire, a third step (S3) of executing an MR imaging sequence of a plurality of sliced images intersecting the guide wire, a fourth step (S4) of reconstructing three-dimensional image data based upon the nuclear magnetic resonance signals, which are generated from the patient when the sequence is executed and are received by the guide wire, and determining the tip position and the inserting direction of the catheter by detecting the peculiar index provided at the tip of the catheter based upon the three-dimensional image data, and a fifth step (S5) of reconstru
    Type: Application
    Filed: July 12, 2002
    Publication date: February 10, 2005
    Inventors: Takeshi Yatsuo, Hisako Nagao, Kenji Sakakibara
  • Publication number: 20040221575
    Abstract: A pump and motor distribution valve formed by a hydraulic closed circuit for connection between a pump and a motor. In a hydraulic non-stage transmission CVT including a swash plate plunger type hydraulic pump P and a swash plate plunger type hydraulic motor M connected to each other through a hydraulic closed circuit, a pump swash plate member is driven to rotate. A pump cylinder and a motor cylinder are connected to each other and disposed in a connected state on an output shaft. A motor swash plate, restricted in rotation, is oscillated, and the swash plate angle can be regulated variably. A pump-side spool rotatable as one body with the pump swash plate member and a motor-side spool maintained fixedly are inserted in a valve hole formed in the output shaft to penetrate through the output shaft in the axial direction. A hydraulic closed circuit includes the spools and a plurality of communication oil passages formed in the pump cylinder, the motor cylinder and the output shaft.
    Type: Application
    Filed: March 5, 2004
    Publication date: November 11, 2004
    Inventors: Hideo Okuzaki, Kenji Sakakibara, Yoshihisa Kanno
  • Patent number: 6816051
    Abstract: Effect of vibration of a refrigerator on a superconducting coil is reduced to reduce disturbance in an image. A coolant tank for supplying a coolant to coil containers is provided separately from the coil containers, and the refrigerator is placed in the coolant tank, and a coolant circulation passage connects between the coolant tank and the coil containers.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: November 9, 2004
    Assignees: Hitachi, Ltd., Hitachi Medical Corporation
    Inventors: Hiroyuki Watanabe, Tsutomu Yamamoto, Yoshihide Wadayama, Hirotaka Takeshima, Kenji Sakakibara, Takao Honmei
  • Publication number: 20040205407
    Abstract: A programmable logic controller having a data holding unit for storing operation data for instructing operations and condition data for the operations in accordance with a predetermined sequence, having a variable control unit for generating operation instruction signals from the operation data in accordance with a predetermined sequence, and controlling a system for successive operation when conditions defined by the condition data and conditions input from sensors of the control system match.
    Type: Application
    Filed: February 27, 2004
    Publication date: October 14, 2004
    Inventors: Kenji Sakakibara, Toshihiro Takenaka, Michiyasu Kurihara
  • Publication number: 20040041673
    Abstract: A magnet device provided with a shield current carrying means in which two sets of magneto-static field generating source for generating magnetic fields directed towards a first direction are disposed facing each other across a finite region and at least one set of the magneto-static field generating sources are disclosed on at least two almost concentric circles, wherein, on a first plane including a first axis, a second axis and a first point, the first point being a point of insertion between the first axis parallel to the first direction and passing the almost center of the shield current carrying means and the second axis crossing at right angles the first axis and spaced almost equal distance from the two sets of the generating sources, positive and negative current carrying directions of one set out of two sets of magneto-static field generating sources or those in respective sets are arranged alternately, when an angle formed by a half line at the n-th point position from the first point to extend tow
    Type: Application
    Filed: June 4, 2003
    Publication date: March 4, 2004
    Inventors: Shigeru Kakugawa, Katsunori Azuma, Tsuyoshi Wakuda, Yoshihide Wadayama, Hirotaka Takeshima, Kenji Sakakibara, Takeshi Yatsuo, Takao Honmei
  • Patent number: 6698199
    Abstract: Distributing valves of a swash plate type hydraulic drive transmission can make a cylinder block smaller and reduce the number of processes and the number of parts. Distributing valves alternately switch, corresponding to the axial reciprocating motion of plungers, communication and cutoff between communication passages communicated to oil chambers opening to the inner surface of cylinder holes and low pressure ports and high pressure ports communicated to a low pressure oil passage and a high pressure oil passage opening to the inner surface of the cylinder holes.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: March 2, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Tsutomu Hayashi, Yoshihisa Kanno, Kenji Sakakibara, Nobuyuki Yakigaya
  • Publication number: 20040021538
    Abstract: Effect of vibration of a refrigerator on a superconducting coil is reduced to reduce disturbance in an image.
    Type: Application
    Filed: August 5, 2003
    Publication date: February 5, 2004
    Applicants: Hitachi, Ltd., Hitachi Medical Corporation
    Inventors: Hiroyuki Watanabe, Tsutomu Yamamoto, Yoshihide Wadayama, Hirotaka Takeshima, Kenji Sakakibara, Takao Honmei
  • Patent number: 6667676
    Abstract: Effect of vibration of a refrigerator on a superconducting coil is reduced to reduce disturbance in an image. A coolant tank for supplying a coolant to coil containers is provided separately from the coil containers, and the refrigerator is placed in the coolant tank, and a coolant circulation passage connects between the coolant tank and the coil containers.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: December 23, 2003
    Assignees: Hitachi, Ltd., Hitachi Medical Corporation
    Inventors: Hiroyuki Watanabe, Tsutomu Yamamoto, Yoshihide Wadayama, Hirotaka Takeshima, Kenji Sakakibara, Takao Honmei
  • Patent number: 6664876
    Abstract: Effect of vibration of a refrigerator on a superconducting coil is reduced to reduce disturbance in an image. A coolant tank for supplying a coolant to coil containers is provided separately from the coil containers, and the refrigerator is placed in the coolant tank, and a coolant circulation passage connects between the coolant tank and the coil containers.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: December 16, 2003
    Assignees: Hitachi, Ltd., Hitachi Medical Corporation
    Inventors: Hiroyuki Watanabe, Tsutomu Yamamoto, Yoshihide Wadayama, Hirotaka Takeshima, Kenji Sakakibara, Takao Honmei
  • Publication number: 20030112106
    Abstract: Effect of vibration of a refrigerator on a superconducting coil is reduced to reduce disturbance in an image.
    Type: Application
    Filed: November 12, 2002
    Publication date: June 19, 2003
    Inventors: Hiroyuki Watanabe, Tsutomu Yamamoto, Yoshihide Wadayama, Hirotaka Takeshima, Kenji Sakakibara, Takao Honmei
  • Publication number: 20030048163
    Abstract: Effect of vibration of a refrigerator on a superconducting coil is reduced to reduce disturbance in an image.
    Type: Application
    Filed: June 14, 2002
    Publication date: March 13, 2003
    Inventors: Hiroyuki Watanabe, Tsutomu Yamamoto, Yoshihide Wadayama, Hirotaka Takeshima, Kenji Sakakibara, Takao Honmei
  • Publication number: 20020170289
    Abstract: Distributing valves of a swash plate type hydraulic drive transmission can make a cylinder block smaller and reduce the number of processes and the number of parts. Distributing valves alternately switch, corresponding to the axial reciprocating motion of plungers, communication and cutoff between communication passages communicated to oil chambers opening to the inner surface of cylinder holes and low pressure ports and high pressure ports communicated to a low pressure oil passage and a high pressure oil passage opening to the inner surface of the cylinder holes.
    Type: Application
    Filed: April 2, 2002
    Publication date: November 21, 2002
    Inventors: Tsutomu Hayashi, Yoshihisa Kanno, Kenji Sakakibara, Nobuyuki Yakigaya
  • Patent number: 6122914
    Abstract: It is intended to provide a swash plate type continuously variable transmission capable of automatically affording a lock-up state in which second distributing valves are stopped at their stroke mid-point to cut off motor ports when a motor swash plate stands upright, even without using any special interlocking mechanism. Second distributing valves for bringing motor ports of motor cylinder bores into communication with a high-pressure oil path and a low-pressure oil path selectively in an alternate manner are arranged in parallel with the axis X of a cylinder block; a valve swash plate for reciprocating the second distributing valves is integrally combined with a motor swash plate on the same slant plane; and the motor ports are formed so as to be controlled selectively by the second distributing valves at respective positions 90.degree.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: September 26, 2000
    Assignee: Honda Giken Kogyo Kabhushiki Kaisha
    Inventors: Tsutomu Hayashi, Yoshihiro Nakajima, Hideo Okuzaki, Masako Takahashi, Hiroaki Kayama, Kenji Sakakibara
  • Patent number: 5287159
    Abstract: An image forming apparatus having an image formation processing unit for forming an image of an original according to information carried by light reflected from the original. A plurality of paper feed cassettes are provided to accommodate plural kinds of output papers having different sizes or having longitudinal and transverse feed directions for papers of the same size. A selected one of the output papers is supplied from the selected paper feed cassette to the image formation processing unit, and the image of the original is thereafter formed on the selected output paper. At least two kinds of the output papers can be preliminarily selected, and simultaneously an enlarging or reducing magnification can be selected.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: February 15, 1994
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Kenji Sakakibara
  • Patent number: RE34503
    Abstract: An imaging device wherein a latent image is formed on a photo and pressure sensitive recording sheet by exposing a light thereon and the latent image is then developed by applying a pressure thereon. The degree of pressing is automatically and/or manually controlled so as to obtain a visible image of stable color deepness and of good quality.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: January 11, 1994
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kenji Sakakibara, Michitoshi Akao, Shigeyuki Hayashi, Jun Sakai