Patents by Inventor Chiaki Matsuyama

Chiaki Matsuyama 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).

  • Patent number: 5247272
    Abstract: A dipole coil for use in a superconducting electromagnet employs two saddle-shaped coils in a diametrically opposed relationship. Each of the saddle-shaped coils includes central linearly extending portions, and curved saddle portions at the ends of the coil, respectively. A trapezoidal curved portion spacer is wedged into place against part of the saddle portion of the coil at the end thereof so as to exert a compressive force on such part which will inhibit displacement of the coil windings when an electromagnetic force acts thereon. In this way, friction at the coil is suppressed so as to prevent quenching. At the other end of the coil, the trapezoidal spacer includes a triangular member and a trapezoidal member spaced from one another so as to define a passageway. Leads of the coil are respectively accommodated in such passageways to prevent an excessive force from acting thereon. In this way, damage to the leads is also prevented.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: September 21, 1993
    Assignees: Ship & Ocean Foundation, Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Chiaki Matsuyama, Hiroaki Morita, Yasuo Kannoto, Hisashi Sekimoto, Youichi Iwamoto
  • Patent number: 5126711
    Abstract: A novel construction of a superconductive coil system, having sufficient coupling strength and stiffness and being easy to assemble, is disclosed. A coil retainer of a stiffened cylindrical shell is divided into two parts for receiving coils and spacers. The inner circumference sides of the adjoining portions of the two parts form a dividing surface consisting of a plane extending longitudinally and are coupled with bolts having their axes directed in the circumferential direction. The outer circumference sides of the same adjoining portions form comb teeth meshed with each other and keyways extending longitudinally along the outer surface of the same comb teeth, and are coupled by keys inserted into the keyways and having their axes directed in the longitudinal direction.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: June 30, 1992
    Assignees: Ship & Ocean Foundation, Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Ryoichi Sasakawa, Yoichi Iwamoto, Yasuo Kannoto, Hisashi Sekimoto, Chiaki Matsuyama, Kazuyoshi Hayakawa, Hiroaki Morita, Masahide Arayasu
  • Patent number: 4797561
    Abstract: A parallel circuit which is composed of a plurality of series circuits connecting photodetectors to reading switches in series is connected to an input terminal of an operational amplifier. Both a feedback switch and a feedback capacitor are connected in parallel to the operational amplifier. The reading switches and the feedback switches are turned on/off alternately, and then an output of the operational amplifier associated with the operation of reading switches turned on is input to one of input terminals of a differential amplifier, and the output of the operational amplifier associated with the operation of the reading switches turned off is input to the other input terminal of the differential amplifier to obtain the reading signal with noise absorbed.
    Type: Grant
    Filed: August 28, 1986
    Date of Patent: January 10, 1989
    Assignee: Kyocera Corporation
    Inventors: Hiromitsu Tajiri, Yasuo Nishiguchi, Chiaki Matsuyama
  • Patent number: 4652767
    Abstract: A reading apparatus including a first group of photo-detection units, the first group of photo-detection units including a first plurality of photo-detection units each including a photo-detector constituted by a photodiode and an electric charge storage capacitor connected in parallel therewith, and an analog switch connected in series with the photo-detector thus constituted, a second group of photo-detection units, the second group of photo-detection units including a second plurality of photo-detection units each also including a photo-detector constituted by a photo-diode and an electric charge storage capacitor connected in parallel therewith, and an analog switch connected in series with the photo-detector thus constituted, the second plurality of photo-detection units being substantially equal in number to the first plurality of photo-detection units, a control system for rendering the switches conductive successively one at at time, a first common line for commonly delivering detecting signals from t
    Type: Grant
    Filed: October 31, 1985
    Date of Patent: March 24, 1987
    Assignee: Kyocera Corporation
    Inventors: Hiromitsu Tajiri, Yasuo Nishiguchi, Chiaki Matsuyama
  • Patent number: 4197623
    Abstract: A factory barge for manufacturing reinforced concrete products comprises a batcher plant mounted at one end of the hull for preparing ready mixed concrete, a reinforced concrete product unloader mounted at the opposite end of the hull, and, between the batcher plant and the unloader, in the order mentioned, concrete placers for receiving the concrete from the batcher plant and placing it into elongated molds held in the fore-and-aft direction, compactors for compacting the concrete in the molds, a curer for curing the concrete compacted in the molds, and a mold remover for removing the molds from the cured concrete products. An equipment for fabricating reinforcement cylinders is mounted on a deck above the deck where the concrete placers are installed, and means for transferring the molds from the concrete placers to the compactors, curer, and mold remover is so disposed as to handle the molds while maintaining them in the fore-and-aft direction.
    Type: Grant
    Filed: April 4, 1978
    Date of Patent: April 15, 1980
    Assignees: Mitsubishi Jukogyo Kabushiki Kaisha, Daido Concrete Co., Ltd., Shimizu Harbor Const. Corp.
    Inventors: Toshimasa Suzuki, Chiaki Matsuyama, Susumu Ogawa, Yoshitaka Itoh, Yasuo Usui