Patents by Inventor Toshio Sakamoto

Toshio Sakamoto 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: 6039695
    Abstract: An ultrasound probe coupler for electrically and rotationally coupling an ultrasound probe with a probe control unit of an ultrasound examination system. The probe coupler essentially includes a tail end connector provided at the tail end of a flexible cord to be connected to the probe control unit. The tail end connector is provided with a stationary ring which is fixedly connected to a tail end portion of the flexible cord, and a rotational coupler having a series of rotary rings, including at least one electrode ring, for coupling the flexible shaft with a rotational drive means and an electrode on the part of the probe control unit. The rotational coupler further includes a rotation transmission member detachably connected to one of the rotating electrode rings and projected radially outward of the inner periphery of the stationary ring for engagement with a rotational drive member on the part of the probe control unit.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: March 21, 2000
    Assignee: Fuji Photo Optical Co., Ltd.
    Inventors: Toshio Sakamoto, Toshizumi Tanaka, Hiromu Itoi, Masatoshi Yoshihara
  • Patent number: 6017311
    Abstract: An ultrasound probe of the type having, successively from its head to tail end, an ultrasound scanner head assembly accommodating an ultrasound transducer element rotatably within an end cap, an elongated flexible cord having a flexible transmission shaft of tightly wound metal wire coils within an outer sheathing tube, and a tail end connector.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: January 25, 2000
    Assignee: Fuji Photo Optical Co., Ltd.
    Inventor: Toshio Sakamoto
  • Patent number: 6004273
    Abstract: An ultrasound transmission medium feed device particularly for an endoscopically inserting ultrasound probe adapted to be introduced into a body cavity through and under the guidance of one of biopsy channels provided on an endoscope.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: December 21, 1999
    Assignee: Fuji Photo Optical Co., Ltd.
    Inventors: Toshio Sakamoto, Toshizumi Tanaka, Hiromu Itoi, Masatoshi Yoshihara
  • Patent number: 5971929
    Abstract: A stopper mechanism for an endoscopically insertable ultrasound probe which is designed to be introduced into a body cavity through a biopsy channel provided internally of an insertion instrument of an endoscope and which is of the type having a bulky ultrasound scanner head at the distal end of an elongated thin flexible cord and being placed in the endoscopic biopsy channel except the bulky scanner head when in use. A stopper protuberance is projected radially outward from a connecting neck portion of the ultrasound probe immediately on the proximal side of the scanner head where the flexible cord of the ultrasound probe is connected to a connecting member axially extended from the ultrasound scanner head.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: October 26, 1999
    Assignee: Fuji Photo Optical Co., Ltd.
    Inventors: Toshio Sakamoto, Toshizumi Tanaka, Hiromu Itoi, Masatoshi Yoshihara
  • Patent number: 5938614
    Abstract: A probe head joint construction for an endoscopically ultrasound probe to be introduced into a body cavity through a biopsy channel provided internally of an endoscopic insertion instrument, the ultrasound probe having a bulky ultrasound scanner head at the distal end of an elongated thin flexible cord having a cable sheathed in a soft flexible outer tube for placement in said endoscopic biopsy channel, and the ultrasound scanner head having an ultrasound transducer element housed in an end cap of a larger diameter than the endoscopic biopsy channel.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: August 17, 1999
    Assignee: Fuji Photo Optical Co., Ltd.
    Inventor: Toshio Sakamoto
  • Patent number: 5643969
    Abstract: A process for preparing an expandable resin composition comprising the following steps:(a) admixing, at a temperature in the range of about 120 to about 130 degrees C., the following components:(i) 100 parts by weight of a high pressure, low density homopolymer of ethylene;(ii) about 30 to about 200 parts by weight of a high density polyethylene having a melting point higher than the above mixing temperature;(iii) about 2 to about 50 parts by weight of polypropylene having a DSC melting point of not less than about 140 degrees C.; and(iv) about 0.1 to about 2 parts by weight of a silane coupling agent; and(b) admixing, at a temperature in the range of about 120 to about 130 degrees C., 100 parts by weight of the mixture produced in step (a) with 0.5 to 3 parts by weight of one or more chemical blowing agents having a decomposition temperature higher than the above mixing temperature.
    Type: Grant
    Filed: July 11, 1996
    Date of Patent: July 1, 1997
    Assignee: Nippon Unicar Company Limited
    Inventors: Toshio Sakamoto, Tatsuhiko Inoue, Mamoru Yoshida
  • Patent number: 5346926
    Abstract: A process for producing an expandable resin composition for a small diameter electric wire insulated with highly expanded cellular polyethylene which comprises (1) heat-kneading at a temperature higher than 135.degree. C. a mixture comprising: (i) a low density polyethylene having a density ranging from about 0.890 to 0.925 g/ml; (ii) a high density polyethylene having a melting point higher than 130.degree. C.; and (iii) a polyolefin wax having an average molecular weight ranging from about 1500 to 8000 and a melting point ranging from about 100.degree. C. to 160.degree. C.; and (2) heat kneading at a temperature ranging from 120.degree. C. to 130.degree. C. and at a preliminary expansion ratio lower than 5% the mixture of step (1) with a low temperature decomposable chemical blowing agent.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: September 13, 1994
    Assignee: Nippon Unicar Company Limited
    Inventors: Toshio Sakamoto, Kenichiro Kumai, Shigeru Gotoh
  • Patent number: 5277075
    Abstract: A starting motor with an intermediate gear wherein rotation of a rotating shaft of a DC motor is transmitted to a pinion in a one-way rotational direction by an overrunning clutch, and an intermediate gear supported rotatably and forward-and-backward slidably by an intermediate shaft retained by a front bracket through a bearing and in mesh with the pinion, meshes with a ring-gear of an internal combustion engine by a forward movement thereof thereby starting the internal combustion engine, characterized by that; a storage for a lubricant is provided at a middle portion of the intermediate gear in the axial direction, which is fixed to an inner diameter portion of the intermediate gear; and dust seals are provided in a bearing with metal back supported by the intermediate shaft and at both ends of the inner diameter portion of the intermediate gear.
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: January 11, 1994
    Assignee: Mitsubishi Denki K.K.
    Inventors: Toshio Sakamoto, Shuzou Isozumi
  • Patent number: 5265485
    Abstract: A starting motor with an intermediate gear wherein rotation of a rotating shaft of a DC motor is transmitted to a pinion in a one-way rotational direction by an overrunning clutch, and an intermediate gear supported rotatably and forward-and-backward slidably by an intermediate shaft retained by insertion holes in a front end portion and a first back end portion of a front bracket and in mesh with the pinion, meshes with a ring-gear of an internal combustion engine by a forward movement thereof thereby starting the internal combustion engine, characterized by that; a polygonal hole is provided at a second back end portion of the front bracket communicating to the insertion hole in the first back end portion thereof; a spacer composed of a metallic material or a synthetic resin material, a section of which is a polygon, is inserted into the polygonal hole and fixed thereto blocking rotation thereof; a back end of the spacer is received by a front end of a yoke of the starting motor contacting the front end of
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: November 30, 1993
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshio Sakamoto, Shuzou Isozumi
  • Patent number: 5258674
    Abstract: A starter motor with an intermediate gear wheel. The starter motor includes an interposition member interposed between the front end of a clutch cover fitted onto an overrunning clutch and the rear end of an intermediate gear wheel, a movable connecting member including a boss portion which is loosely fitted onto the outer circumference of an extended boss portion projecting backwardly from the rear end portion of the intermediate gear wheel, and a circular-arc-shaped fitting portion which is formed integrally with the rear end portion of the boss portion to extend upwardly and which is fitted to a lower half portion of a fitting groove formed at the rear end portion of the overrunning clutch so as to be movable in the axial direction of the clutch.
    Type: Grant
    Filed: September 9, 1992
    Date of Patent: November 2, 1993
    Assignee: Mitsubishi Denki K.K.
    Inventors: Toshio Sakamoto, Shuzou Isozumi
  • Patent number: 5165293
    Abstract: An intermediate gear type starter comprises a movable coupling body which is mounted on the intermediate shaft in such a manner as to slide together with the intermediate gear. The movable coupling body comprises: a locking portion which is engaged with the over-running clutch: and a cover portion for closing the opening formed on the internal combustion engine side. The over-running clutch is axially coupled to the intermediate gear through the movable coupling body.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: November 24, 1992
    Assignee: Mitsubishi Denki K.K.
    Inventors: Yoshiaki Kittaka, Toshio Sakamoto
  • Patent number: 4763720
    Abstract: For the fabrication of a disintegratable sand core, refractory particles such as silica sand are mixed with two binders, one consisting of an inorganic substance such as a silicate and the other consisting of a starch, and, preferably, with water. The two binders function to cancel the disadvantages arising from the use of only either. The mixture is introduced into a core box molded essentially of materials pervious to microwave energy. Exposed to microwave energy through the core box, the mixture hardens in the shape of the core box cavity. For the production of cores having greater surface stability at room temperature, the starch and water are first mixed together into a paste, and this paste is added to the refractory particles together with the inorganic binder, thereby assuring uniform dispersion of the starch throughout the mixture.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: August 16, 1988
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Toshio Sakamoto, Kanichi Sato, Yoshiyuki Takemura