Patents by Inventor Yoshinobu Ishikawa

Yoshinobu Ishikawa 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: 6488124
    Abstract: In an elevator, a driving unit is installed at the top of an elevator shaft above a counterweight. Traction sheaves engage with ropes and are rotated by the driving device. These traction sheaves are positioned close to wall surfaces of the elevator shaft, that are adjacent to its wall surface facing the counterweight. The traction sheaves are also positioned outside the horizontally projected plane of a car.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: December 3, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kunio Yasuda, Yoshiaki Fujita, Kosei Kamimura, Ikuo Asami, Yasuyuki Wagatsuma, Kiyoshi Kobayashi, Tadashi Munakata, Shin Murakami, Yoshinobu Ishikawa, Takeshi Miyata, Mitsuo Hayase
  • Patent number: 6447900
    Abstract: The present invention provides a pressure-sensitive adhesive having a storage modulus from 1×105 to 1×106 dyne/cm2 and at a frequency of 1 Hz; and having a gel fraction of 55% or more when the storage modulus is measured at a temperature of 25° C. in dynamic viscoelasticity measurement. Its pressure-sensitive adhesive product can be obtained by the process, for example, for producing the (meth)acrylate emulsion-type pressure-sensitive adhesive which comprises adding the polymerization-initiator(s) at separate multi-steps to the present reaction system in the presence of polymerization-initiator(s) at the time of polymerizing alkyl (meth)acrylate and which comprises using a water-soluble polymerization-initiator at least one time during or after the second step of adding the polymerization-initiator(s).
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: September 10, 2002
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Shoji Ohtani, Yasuhiro Doi, Yoshinobu Ishikawa, Toshitaka Sakuda, Kenichi Shiba
  • Patent number: 6427823
    Abstract: A conveyor apparatus 20 according to the present invention comprises a tread guide rail 4 which is provided on a structure 120, and a plurality to treads 2 which moves along the tread guide rail 4. The plurality of treads 2 are connected by a chain 5 having pin rollers 5a. An eccentrically rotatable eccentric crank shaft 8 is connected to a rotation drive unit 6. The eccentric crank shaft 8 is connected to an oscillating body 10 which oscillates in accordance with the eccentric rotation of the eccentric crank shaft 8. The oscillating body 10 is provided with pin roller rolling teeth 11 having a trochoid tooth profile for giving thrust to the pin rollers 5a in accordance with the oscillation of the oscillating body 10.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: August 6, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshinobu Ishikawa, Yoshio Ogimura, Megumi Ookubo
  • Patent number: 6373675
    Abstract: In a closing magnetic circuit, when a movable contact is in contact with a fixed contact and a switching device is closed, N and S poles of a permanent magnet attract the fixed member in a direction in which the movable contact is pressed against the fixed contact. In an opening magnetic circuit, when the movable contact is separated from the fixed contact and the switching device is open, one of the N and S poles of the permanent magnet attracts the fixed member in a direction in which the movable contact is separated from the fixed contact. An operating electromagnet winding increases and decreases the magnetism in the closing magnetic circuit and opening magnetic circuit. With this configuration, it is possible to realize an operating apparatus for a switching device using a simple mechanism and assure a stable operation by producing a great contact load.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: April 16, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiharu Yamazaki, Kimiya Sato, Mitsutaka Homma, Yoshinobu Ishikawa, Makoto Taniguchi
  • Publication number: 20010020064
    Abstract: The present invention provides a reactive surfactant composition for producing a polymer emulsion having good stability without making the particle diameter coarse. That is, the present invention provides a reactive surfactant composition comprising (a) a reactive surfactant having one reactive group selected from the group of a vinyl group, an allyl group and a group having the formula (1) and one anionic hydrophilic group in the molecule thereof, having a critical micelle concentration (CMC) in the range between 0.007 mol/L and 0.4 mol/L and (b) a reactive surfactant having one reactive group selected therefrom and one anionic hydrophilic group in the molecule thereof, having CMC in the range between 1×10−5 mol/L and less than 0.
    Type: Application
    Filed: February 9, 2001
    Publication date: September 6, 2001
    Inventors: Yoshinobu Ishikawa, Hiroki Sawada, Yasuo Ishii
  • Patent number: 6190767
    Abstract: A pressure-sensitive adhesive prepared by emulsifying dispersing a monomer mixture containing at least 50% by weight, based on the total weight of the monomer mixture, of a long-chain alkyl (meth)acrylate with the alkyl having 9 to 13 carbon atoms in an aqueous surfactant solution to bring the monomer mixture to fine particles having an average diameter of not more than 2.0 &mgr;m and polymerizing the monomer mixture in the presence of a water-soluble polymerization initiator can provide a pressure-sensitive adhesive which possesses excellent moisture resistance, water resistance, weather resistance, and adhesion to a nonpolar adherend, such as a polyolefin plastic, and, at the same time, well-balanced tackiness properties.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: February 20, 2001
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Yoshinobu Ishikawa, Hiroaki Kitayama, Masaki Nomura
  • Patent number: 6141862
    Abstract: An apparatus for disassembling and assembling a gas turbine combustor comprises a hand assembly for holding a combustor component of a gas turbine, an inserting and drawing section which supports the hand assembly and moves the same in parallel to a central axis of the combustor component and a retainer for securing the inserting and drawing section onto a casing which constitutes an outer section of the gas turbine.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: November 7, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi Matsui, Yoshinobu Ishikawa, Tadashi Munakata, Yoshikata Kobayashi, Takeshi Takahara, Yoshihiko Nakada, Yukio Someya
  • Patent number: 6080480
    Abstract: A delayed-tack adhesive composition exhibiting a high tack strength even for adherends made of non-polar materials such as polyethylene and polypropylene, which comprises a (co)polymer prepared by the use of a radical-polymerizable monomer having a straight-chain or branched alkyl group having 9 to 18 carbon atoms and a plasticizer being solid at ordinary temperatures.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: June 27, 2000
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Kenichi Shiba, Yoshinobu Ishikawa, Masaki Nomura
  • Patent number: 6020567
    Abstract: An operation apparatus of a circuit breaker provided with a mobile contact and a fixed contact, the mobile contact is pressed against the fixed contact or drawn apart from the fixed contact, comprising an operation rod fixed to the mobile contact and held to be movable with respect to the fixed contact, a mobile member movably connected to the operation rod, a relative movable range of the mobile member to the operation rod being limited within a predetermined value, a first elastic member for urging the operation rod with respect to the mobile member in a direction in which the mobile contact is pressed against the fixed contact, a fixed member for movably holding the mobile member, a second elastic member for urging the mobile member with respect to the fixed member in a direction in which the mobile contact is drawn apart from the fixed contact, a permanent magnet for driving the mobile member with respect to the fixed member in a direction in which the mobile contact is pressed against the fixed contact,
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: February 1, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshinobu Ishikawa, Hiroshi Ohashi, Yasuharu Kanai, Makoto Taniguchi, Kenji Watanabe, Hidetake Shiire
  • Patent number: 5950805
    Abstract: This invention provides a convey apparatus capable of conveying a convey target without locally applying an excessive force to it. The convey apparatus includes a convey portion and a medium pressure switching unit. The convey portion has a plurality of medium passages for passing a medium therethrough, and at least part of the surface of the convey portion is made of an elastic material. The diameters of the medium passages can be freely increased/decreased. The medium pressure switching unit controls the pressures of a medium supplied to the respective medium passages of the convey portion to increase or decrease the diameters of the medium passages, thereby generating a carrier wave on the surface of the convey portion.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: September 14, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshinobu Ishikawa, Tadashi Munakata
  • Patent number: 5417542
    Abstract: A method and an apparatus for carrying a workpiece for improving efficiency in a workpiece carrying operation. In the apparatus, a moving member having a workpiece holding member is driven with a linear motion in a horizontal plane along a carrier passage, and the workpiece holding member is driven with a revolutional motion in a vertical plane around a revolution axis displaced from a center of the workpiece holding member, while the workpiece holding member maintains an orientation in which a holder holding the workpiece points downwards. The holder of the workplece holding member is controlled to sequentially carry out holding of the workpiece and releasing of the workpiece at lowest positions of the workpiece holding member in the revolutional motion, so as to realize a continuous workpiece carrying operation.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: May 23, 1995
    Assignees: Japan Tobacco, Kabushiki Kaisha Toshiba
    Inventors: Hisao Suzuki, Kazuhiro Tokitsu, Makoto Kasahara, Kiyoe Imai, Kouichi Yumita, Tadashi Munakata, Yoshinobu Ishikawa, Etuo Minamihama, Takatomo Izume, Yasuharu Ujiie, Masamichi Kato
  • Patent number: 5331731
    Abstract: A work mounting apparatus according to the present invention comprises a rotating drum divided into upper and lower drums, a head unit arranged on the outer periphery of the rotating drum or the lower drum, a circular work head attached to the head unit, and a suction nozzle protruding from the outer peripheral surface of the work head toward a workbench. While the lower drum is rotating, the suction nozzle of the work head repeats cycloid motion along the workbench with its posture or orientation kept fixed with respect to the workbench. While repeating the cycloid motion, the nozzle receives a work from a work feeder of the workbench by suction, and mounts the work on a printed board on the workbench. The work mounting apparatus further includes a balance weight for the work head, and a friction brake for applying a frictional force to the turning shaft of the work head, to thereby stabilize the turning motion of the work head.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: July 26, 1994
    Assignees: Japan Tobacco Inc., Kabushiki Kaisha Toshiba
    Inventors: Hisao Suzuki, Kazuhiro Tokitu, Tadashi Munakata, Yoshinobu Ishikawa, Takatomo Izume, Masamichi Kato, Etuo Minamihama
  • Patent number: 5285484
    Abstract: A remote control apparatus for maintaining a tokamak type nuclear fusion reactor comprises a rail having a plurality of arcuated links to be extended in a circumferential direction and a plurality of joints for pivotally connecting the adjacent arcuated links, a vehicle running on the rail extended so as to form a continuous arc with its center substantially coinciding with the center of the torus space, and at least one handling device mounted on the vehicle, for handling the in-vessel components. The remote control apparatus is further provided with a rail housing device for receiving the arcuated links in a folded state when they are not in use, a rail mounting device for sending out said arcuated links in succession into the torus space, extending them so that they form a continuous arc and supporting the arcuated link on the proximal end of the rail, and a rail supporting device for supporting the central portion of the rail extended in the torus space.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: February 8, 1994
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kiyoshi Shibanuma, Shin Murakami, Tadashi Munakata, Yoshinobu Ishikawa
  • Patent number: 5274908
    Abstract: A work or component mounting apparatus according to the present invention comprises a rotating drum arranged above a workbench and divided into upper and lower drums, a head unit detachably mounted to the lower drum of the rotating drum, a circular work head (or, in other words, a component head) attached to the head unit, a suction nozzle protruding from the outer peripheral surface of the work head toward the workbench, and a controller housed in the upper drum of the rotating drum for controlling the turning motion of the work head and the supply of suction pressure to the suction nozzle. While the lower drum is rotating, the suction nozzle of the work head repeats cycloid motion along the workbench with its posture kept fixed with respect to the workbench. While repeating the cycloid motion, the nozzle receives a work from a work feeder of the workbench by suction, and mounts the work on a printed board on the workbench.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: January 4, 1994
    Assignees: Japan Tobacco Inc., Kabushiki Kaisha Toshiba
    Inventors: Hisao Suzuki, Kouichi Yumita, Kazuhiro Tokitu, Tadashi Munakata, Yoshinobu Ishikawa, Etuo Minamihama, Koji Taira, Yasuharu Ujiie
  • Patent number: 5234304
    Abstract: A method and an apparatus for workpiece installation capable of carrying out workpiece installation operation without a stopping of a rotational motion of a rotatable table member. In the apparatus, rotatable drum is continuously rotated while workpiece carrier member, provided along a circumference of the rotatable drum, for carrying a workpiece from a workpiece supply station to a workpiece installation station, which is capable of spinning on the circumference while carrying the workpiece, is controlled such that the workpiece carrier member spins while the rotatable drum rotates so as to move along a prescribed trajectory which is preferably a cycloidal or quasi-cycloidal trajectory, and that the workpiece is picked up by the workpiece carrier member at a prescribed pick-up position on the workpiece supply station and released at a prescribed installation position on the workpiece installation station.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: August 10, 1993
    Assignees: Japan Tobacco Inc., Kabushiki Kaisha Toshiba
    Inventors: Yutaka Okumoto, Kenji Koshiba, Hisao Suzuki, Kazuhiro Tokitsu, Makoto Kasahara, Kaoru Watanabe, Kiyoe Imai, Susumu Simada, Koichi Yumita, Takatomo Izume, Tadashi Munaakata, Yoshinobu Ishikawa, Akira Sawakata, Yasuharu Ujiie
  • Patent number: 5173248
    Abstract: A remote control apparatus for maintaining a tokamak type nuclear fusion reactor comprises a rail having a plurality of arcuated links to be extended in a circumferential direction and a plurality of joints for pivotally connecting the adjacent arcuated links, a vehicle running on the rail extended so as to form a continuous arc with its center substantially coinciding with the center of the torus space, and at least one handling device mounted on the vehicle, for handling the in-vessel components. The remote control apparatus is further provided with a rail housing device for receiving the arcuated links in a folded state when they are not in use, a rail mounting device for sending out said arcuated links in succession into the torus space, extending them so that they form a continuous arc and supporting the arcuated link on the proximal end of the rail, and a rail supporting device for supporting the central portion of the rail extended in the torus space.
    Type: Grant
    Filed: February 12, 1991
    Date of Patent: December 22, 1992
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kiyoshi Shibanuma, Shin Murakami, Tadashi Munakata, Yoshinobu Ishikawa
  • Patent number: 5126392
    Abstract: A shade enhancing agent comprises an aqueous resin emulsion composition obtained by polymerizing a monomer in the presence of a cationic surfactant or a cationic protective colloid, polymerizing a monomer and adding a cationic protective colloid or polymerizing a monomer in the presence of a cationic or nonionic emulsifying dispersant so as to have a cationic group in the molecule, a dry film of said composition having a glass transition point (Tg) in the range between 20.degree. C. and 110.degree. C. and a refractive index of 1.50 or less, said emulsion composition having a zeta potential in the range between +5 and +80 mV at an ion strength of 10.sup.-3 and a pH value of 7.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: June 30, 1992
    Assignee: Kao Corporation
    Inventors: Norihiko Nakashima, Yoshinobu Ishikawa, Akihiro Kondo, Masaki Tumadori
  • Patent number: 5103739
    Abstract: An apparatus for tracking an overhead line includes a carriage, an arm provided relatively movable on the carriage, a hook assembly provided at both end portions of the arm and for slinging the arm over the overhead line, a vertical/rotational motion shaft provided vertically movable and rotatably on the carriage, a wheel supporting arm provided on the top end portion of the vertical/rotational motion shaft swingably, a pair of wheels provided at both ends of the wheel supporting arm with an extension line of the vertical/rotational motion shaft being between the wheels, and a clamp member for clamping the wheels on the overhead line.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: April 14, 1992
    Assignees: The Tokyo Electric Power Co., Inc., Kabushiki Kaisha Toshiba
    Inventors: Jun Sawada, Yoshinobu Ishikawa, Yoshikata Kobayashi, Yasuhiro Matsumoto
  • Patent number: 4343426
    Abstract: An annular tank for storing nuclear reaction material in an annular space formed among seamless upper and lower annular dies disposed elevationally in a predetermined space and inner and outer sheaths extended on the inner and outer peripheral surfaces of the upper and lower dies. The tank avoids thermal strain and deformation by forming the upper and lower dies in a seamless manner to thus enhance the heat dissipating effect together with high working accuracy and strength. The method of fabricating the annular tank is simple by omitting the use of jigs for welding the segments with less loss and high production yield.
    Type: Grant
    Filed: February 13, 1980
    Date of Patent: August 10, 1982
    Assignee: Doryokuro Kaku Nenryo Kaihatsu Jigyodan
    Inventors: Katsuyuki Otsuka, Akio Todokoro, Yoshiharu Takahashi, Kazuhito Hiroe, Yoshinobu Ishikawa