Patents by Inventor Kazuo Onishi

Kazuo Onishi 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: 20040242709
    Abstract: A polymeric actuator of simple structure, capable of being easily miniaturized, showing quick response and capable of generating large displacement. The polymeric actuator includes an ion-exchange resin product and metal electrodes. The ion-exchange resin product contains an alkylammonium. The metal electrodes are formed on the surface of the ion-exchange resin product and are insulated from each other. The polymeric actuator operates as an actuator by applying a potential difference between the metal electrodes when the ion-exchange resin product is in water-containing state to allow the ion-exchange resin product to undergo bending or deformation.
    Type: Application
    Filed: June 14, 2004
    Publication date: December 2, 2004
    Inventors: Keisuke Oguro, Kinji Asaka, Tatsuhiro Okada, Kazuo Onishi, Shingo Sewa
  • Patent number: 6762210
    Abstract: A process for producing a polymeric actuator including an ion-exchange resin product and metal electrodes which are formed on the surface of the ion-exchange resin product is provided. The process involves repeatedly conducting the following steps (i) to (iii) to form the metal electrodes ranging from the surface of the ion-exchange resin product to the inside thereof: (i) a step of allowing the ion-exchange resin product to adsorb a metal complex (adsorption step), (ii) a step of reducing the metal complex adsorbed on the ion-exchange resin product by a reducing agent to deposit a metal on the surface of the ion-exchange resin product (deposition step), and (iii) a step of washing the ion-exchange resin product having the deposited metal (washing step). Through the above steps, a polymeric actuator having simple structure, capable of being easily miniaturized, showing quick response and capable of generating large displacement can be obtained.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: July 13, 2004
    Assignees: Eamex Corporation, National Institute of Advanced Science and Technology
    Inventors: Keisuke Oguro, Kinji Asaka, Tatsuhiro Okada, Kazuo Onishi, Shingo Sewa
  • Publication number: 20030006549
    Abstract: When a film is rewound, light is applied from light-emitting units to the film, and light that has passed through the film is detected by light-detecting units to detect a plurality of inclined defects in the film based on a change in the intensity of the light transmitted through the film. Slits oriented in the direction of the inclined defects are disposed in front of the light-emitting units and the light-detecting units. Detected signals outputted from the light-detecting units are transmitted to a processing device and processed thereby. The processing device processes the signals by approximating a maximum value array of extremal values of the signals in respective reference lengths of the film, with two functions in zones, and identifying a boundary between the zones as a position where a defect disappears.
    Type: Application
    Filed: June 21, 2002
    Publication date: January 9, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Kazuo Onishi, Hiroyuki Nishida
  • Publication number: 20020134952
    Abstract: Illuminating light emitted from a light source is led via a condenser lens, an optical fiber, a half-silvered mirror, and a condenser lens to a reflector. The reflector reflects the illuminating light to a CCD device through a telecentric optical system which comprises the condenser lens, the half-silvered mirror, and an aperture member. The illuminating light applied to the CCD device is greatly reduced in amount as it passes through a light-transmissive sheet-like body twice. The light-transmissive sheet-like body itself or an edge thereof can be detected with high accuracy even if the light-transmissive sheet-like body has a high transmittance.
    Type: Application
    Filed: February 1, 2002
    Publication date: September 26, 2002
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yoshiyuki Ishii, Kazuo Onishi
  • Patent number: 5441489
    Abstract: A catheter consists of a torque transmitting portion which has rigidity sufficient for torque transmission and a flexible portion made of a material having a glass transition temperature for giving rigidity before insertion and flexibility after insertion. The torque transmitting portion maintains torque transmitting ability before, during and after insertion. The flexible portion maintains appropriate rigidity before and during insertion, which enables easy insertion, and gains flexibility after insertion by the body heat, which avoids hurting of the vulnerable insertion walls. Further, the torque transmitting portion may have a structure wherein a reinforcement of a coil or a braid of linear metal wires, specifically flat rectangular wires, is attached thereto to afford torque transmitting ability. Catheters having various functions and structures can be easily manufactured by extrusion-molding, or the like.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: August 15, 1995
    Assignees: Mitsubishi Cable Industries, Ltd., Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Atsushi Utsumi, Yukio Morita, Tamotsu Kaide, Kazuo Onishi, Shunichi Hayashi
  • Patent number: 5258160
    Abstract: A process and apparatus for producing an elongated body changing in elastic modulus longitudinally thereof with use of polymers without resulting in variations in the outside and inside diameters of the body even when the polymers are different in extrusion characteristics or swelling characteristics. The apparatus may include a feeder 1 for extruding a first polymer in a molten state and a feeder 2 for extruding a second polymer, which is different from the first polymer in elastic modulus and similarly in a molten state. The feeders alternately discharge the respective polymers, which are continuously fed to a long-land die 5 along with a lubricant supplied from a lubricant applicator 4. The polymers are formed into the desired shape and cooled in the die 5, and thereafter extruded.
    Type: Grant
    Filed: August 11, 1992
    Date of Patent: November 2, 1993
    Assignee: Mitsubishi Cable Industries, Ltd.
    Inventors: Atsushi Utsumi, Masaaki Ohtsuji, Motohiko Yamasaki, Tamotsu Kaide, Kazuo Onishi
  • Patent number: 4039871
    Abstract: A cooling device for use in a low inertia electric motor, in which there are provided a plurality of main passages for cooling air, around the outer circumferential surface of a cylindrical armature which surface is surrounded by magnetic pole pieces with gaps left therebetween. The main passages extend in the axial direction of the armature, so that cooling air is introduced under pressure from the ends of the aforesaid main passages on one side and then discharged from the other ends of the main passages, so as to cool the outer circumferential surface of the armature. At least half of those main passages are of such an arrangement that the cross sectional areas of the main passages are gradually varied from inlets of the main passages towards the outlets thereof, respectively so that a circumferential flow of air through said gaps is created.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: August 2, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Seizi Yamashita, Kazuo Onishi
  • Patent number: 4014277
    Abstract: A control apparatus for sewing machine with automatic needle stopping means comprises a motor for supplying a driving force to a sewing machine, a speed control device for controlling the rotational speed of the motor by controlling a driving thyristor connected to the motor, a position detector unit for detecting the position of a sewing machine needle, a braking unit for applying a braking force to the motor to stop the motor and the sewing machine at a predetermined position, and a pedal manipulated by an operator for manipulating the sewing machine. The speed control device comprises a speed command means including a speed detector means resetable by an output signal from the position detector unit for detecting the motor speed, and a counter means having inputs setable by electrical signals generated in response to the manipulation of the pedal, a given sewing cycle being performed by output signals of the counter means.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: March 29, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Shigeki Morinaga, Kazuo Onishi
  • Patent number: 3988654
    Abstract: A miniature brushless motor in which driving coils and magnetically responsive elements such as Hall elements are disposed around a permanent magnet rotor. An output appears from the successive Hall elements detecting the rotating position of the permanent magnet rotor so as to control the current supplied to the driving coils. In the brushless motor, the portion of the permanent magnet rotor opposed to the Hall elements is magnetized through an angle which is selected to be smaller than the angle through which the rotor portion opposed to the driving coils is magnetized.
    Type: Grant
    Filed: December 17, 1974
    Date of Patent: October 26, 1976
    Assignee: Hitachi, Ltd.
    Inventors: Tadashi Takahashi, Kazuo Onishi, Mituru Sato, Junshiro Inamura
  • Patent number: 3969661
    Abstract: A motor control apparatus is disclosed which comprises a speed control device for operating at a command speed a DC motor connected to a DC power supply, a dynamic braking device for braking the motor upon the issuance of a deceleration command, and a low-speed detector for generating a detection signal when the magnitude of the braking current of the motor is reduced below a set level. When the low-speed detector is energized, the speed control device is regulated thereby to run the motor at a predetermined low speed.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: July 13, 1976
    Assignee: Hitachi, Ltd.
    Inventors: Shigeki Morinaga, Kazuo Onishi, Tadashi Takahashi
  • Patent number: 3955273
    Abstract: A flat armature is manufactured by forming a given number of coils over a separatable winding frame, fixing their relative positions by putting adhesive tapes across the coils on the frame, removing the coils from the frame, arranging a group of coils on a plane so that it will form a ring configuration, equipping the coils with a commutator, and moulding the coils equipped with the commutator with resin.
    Type: Grant
    Filed: January 31, 1975
    Date of Patent: May 11, 1976
    Assignee: Hitachi, Ltd.
    Inventors: Shigeki Morinaga, Kazuo Onishi, Toshimi Abukawa, Syoichi Kawamata
  • Patent number: 3942083
    Abstract: A brushless motor with a permanent magnet as a rotor is disclosed in which the rotational position of the rotor is detected by Hall elements thereby to control a transistor, which in turn is used to control the current flowing in the stator winding.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: March 2, 1976
    Assignee: Hitachi, Ltd.
    Inventors: Tadashi Takahashi, Kazuo Onishi