Patents by Inventor Seii Miyakawa

Seii Miyakawa 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: 6895350
    Abstract: A method and a system for estimating an assembling-related fraction defective coefficient of an article in the stage preceding to manufacturing, e.g. at a stage of design. Assembling operation, properties/conditions of parts to be assembled and conditions of an assembling shop having significant influence to the likelihood of occurrence of failure in assembling work are inputted as data. Estimated value of assembling-related fraction defective is arithmetically determined with high accuracy by executing an assembling-related fraction defective value estimating program on the basis of the data as inputted.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: May 17, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuya Suzuki, Toshijiro Ohashi, Seii Miyakawa, Masaaki Asano, Takashi Kubota
  • Publication number: 20040083019
    Abstract: A method and a system for estimating an assembling-related fraction defective coefficient of an article in the stage preceding to manufacturing, e.g. at a stage of design. Assembling operation, properties/conditions of parts to be assembled and conditions of an assembling shop having significant influence to the likelihood of occurrence of failure in assembling work are inputted as data. Estimated value of assembling-related fraction defective is arithmetically determined with high accuracy by executing an assembling-related fraction defective value estimating program on the basis of the data as inputted.
    Type: Application
    Filed: February 13, 2003
    Publication date: April 29, 2004
    Inventors: Tatsuya Suzuki, Toshijiro Ohashi, Seii Miyakawa, Masaaki Asano, Takashi Kubota
  • Patent number: 6625511
    Abstract: Method and apparatus for evaluating quality of a product, and a recording medium therefor. The invention includes creating and storing in advance a workshop evaluating database, extracting from the prepared workshop evaluating database those failure occurrence ratio indexes which correspond to workshop facility levels of an input manufacturing workshop for workshop-conditioned failure influential items thereof, respectively, and evaluating/estimating failure occurrence likelihood for standard manufacturing works in the manufacturing workshop, the failure occurrence likelihood being then stored as workshop index in a product evaluating database, and evaluating/estimating a quality indicating a work-related defective ratio for the products to be manufactured through a plurality of manufacturing works in the manufacturing workshop by using the workshop indexes concerning that manufacturing workshop which has been stored in the article evaluating database in the workshop evaluating step.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: September 23, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuya Suzuki, Toshijiro Ohashi, Seii Miyakawa, Masaaki Asano, Takashi Kubota
  • Patent number: 6553273
    Abstract: A method and a system for estimating an assembling-related fraction defective coefficient of an article in the stage preceding to manufacturing, e.g. at a stage of design. Assembling operation, properties/conditions of parts to be assembled and conditions of an assembling shop having significant influence to the likelihood of occurrence of failure in assembling work are inputted as data. Estimated value of assembling-related fraction defective is arithmetically determined with high accuracy by executing an assembling-related fraction defective value estimating program on the basis of the data as inputted.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: April 22, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuya Suzuki, Toshijiro Ohashi, Seii Miyakawa, Masaaki Asano, Takashi Kubota
  • Patent number: 6526326
    Abstract: A method and a system for estimating an assembling-related fraction defective coefficient of an article in the stage preceding to manufacturing, e.g. at a stage of design. Assembling operation, properties/conditions of parts to be assembled and conditions of an assembling shop having significant influence to the likelihood of occurrence of failure in assembling work are inputted as data. Estimated value of assembling-related fraction defective is arithmetically determined with high accuracy by executing an assembling-related fraction defective value estimating program on the basis of the data as inputted.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: February 25, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuya Suzuki, Toshijiro Ohashi, Seii Miyakawa, Masaaki Asano, Takashi Kubota
  • Patent number: 6401000
    Abstract: A method and a system for estimating an assembling-related fraction defective coefficient of an article in the stage preceding to manufacturing, e.g. at a stage of design. Assembling operation, properties/conditions of parts to be assembled and conditions of an assembling shop having significant influence to the likelihood of occurrence of failure in assembling work are inputted as data. Estimated value of assembling-related fraction defective is arithmetically determined with high accuracy by executing an assembling-related fraction defective value estimating program on the basis of the data as inputted.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: June 4, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuya Suzuki, Toshijiro Ohashi, Seii Miyakawa, Masaaki Asano, Takashi Kubota
  • Publication number: 20010047218
    Abstract: A method and a system for estimating an assembling-related fraction defective coefficient of an article in the stage preceding to manufacturing, e.g. at a stage of design. Assembling operation, properties/conditions of parts to be assembled and conditions of an assembling shop having significant influence to the likelihood of occurrence of failure in assembling work are inputted as data. Estimated value of assembling-related fraction defective is arithmetically determined with high accuracy by executing an assembling-related fraction defective value estimating program on the basis of the data as inputted.
    Type: Application
    Filed: August 13, 2001
    Publication date: November 29, 2001
    Inventors: Tatsuya Suzuki, Toshijiro Ohashi, Seii Miyakawa, Masaaki Asano, Takashi Kubota
  • Patent number: 6223092
    Abstract: A designed object workability evaluating system for evaluating quantitatively at a stage of designing an article whether a structure of the article as designed can be realized with work easy to do in a manufacturing stage for thereby selectively determining a best structure from a plurality of design plans through comparative evaluation thereof. A server machine section of the system includes an evaluation-destined element estimating module for estimating the evaluation-destined elements to be performed on parts constituting an article given by a design plan subjected to evaluation, a part workability evaluation module for evaluating easiness of works to be performed on the parts, an article workability evaluation module for evaluating easiness of works involved in realizing the article, and a best design plan selection/determination module for selectively determining a best structure on the basis of comparative evaluation of a plurality of design plans.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: April 24, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Seii Miyakawa, Syoji Arimoto, Manabu Ikeda, Toshijiro Ohashi, Minoru Iwata, Mitsuharu Hayakawa
  • Patent number: 6108586
    Abstract: A method and a system for estimating an assembling-related fraction defective coefficient of an article in the stage preceding to manufacturing, e.g. at a stage of design. Assembling operation, properties/conditions of parts to be assembled and conditions of an assembling shop having significant influence to the likelihood of occurrence of failure in assembling work are inputted as data. Estimated value of assembling-related fraction defective is arithmetically determined with high accuracy by executing an assembling-related fraction defective value estimating program on the basis of the data as inputted.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: August 22, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuya Suzuki, Toshijiro Ohashi, Seii Miyakawa, Masaaki Asano, Takashi Kubota
  • Patent number: 5717598
    Abstract: A designed object workability evaluating system for evaluating quantitatively at a stage of designing an article whether a structure of the article as designed can be realized easily in a manufacturing stage for thereby selectively determining a best structure from a plurality of design plans through comparative evaluation thereof. The system includes a client machine section including a guide information generating unit for generating information for guiding operations of a user, an input device for allowing the user to input commands and data and a display unit. A server machine section includes a registering unit storing evaluation elements defined by the user, an index calculating module for calculating indexes indicating degrees of difficulty/ease of work, an evaluation element estimating module, a part workability evaluation module, an article workability evaluation module, and a best design plan selection/determination module.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: February 10, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Seii Miyakawa, Syoji Arimoto, Manabu Ikeda, deceased, Toshijiro Ohashi, Minoru Iwata, Mitsuharu Hayakawa
  • Patent number: 4595335
    Abstract: Disclosed is a pick and place unit having a first moving plate movably supported by a fixed plate and a second movable moving plate supported by the first moving plate movably in the direction crossing the moving direction of the first moving plate. The pick and place unit comprises: a first rod-shaped member secured to the fixed plate and disposed along the moving direction of the first moving plate; a second rod-shaped member secured to the second moving plate and disposed along the moving direction of the second moving plate; a movable stopper secured to the first moving plate and having bores, each having portions different in width from each other, for receiving the first and second rod-shaped members respectively; a driving member for moving the movable stopper; and stators fixed at any desired positions of the first and second rod-shaped members, respectively, so as to sandwich the movable stopper and adapted to abut against the movable stopper.
    Type: Grant
    Filed: August 16, 1983
    Date of Patent: June 17, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Naoki Takahashi, Osamu Higuchi, Seii Miyakawa, Masahito Uno, Hiroshi Sato
  • Patent number: 4489993
    Abstract: A CRT mounting structure capable of inserting smoothly and readily a CRT into a predetermined position of a cabinet by fixedly securing to the opening of the CRT, guide ribs each having taper surfaces, along the adjacent two sides of an opening substantially in the form of a rectangular shape and by fixedly securing guide posts for guiding the CRT along the opposite edges to the adjacent two edges.
    Type: Grant
    Filed: June 15, 1982
    Date of Patent: December 25, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Hasegawa, Yoshitaka Tsutsui, Yoshinori Horikawa, Seii Miyakawa
  • Patent number: 4441133
    Abstract: A guide roller of a tape traveling system of a video tape recorder and the like for changing the direction of travel of a magnetic tape and regulating the heightwise position of the tape during its travel including a roller body of a diameter not constant but smoothly varying axially thereof for exerting on the traveling tape a force tending to shift the tape axially. The guide roller has a flange at the top and the bottom of the roller body having a tape guide surface for contacting the edge of the tape which is not perpendicular to the axis of the roller body but convex as viewed from the respective end of the roller body, to prevent the edge of the tape from striking the edges of the flanges. The roller body may be conical at its outer peripheral surface and at the tape guide surface of each flange.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: April 3, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Tsuneo Ogawa, Manabu Ikeda, Seii Miyakawa, Kazunori Iijima, Takao Terayama, Takeshi Matsui
  • Patent number: 4379517
    Abstract: A magnetic-tape running system for a video tape recorder having inclined pins and/or guide rollers having distant flanges. The pins and the guide rollers are inclined at suitable angles in the front and back directions and left and right directions so that the tape is guided only at its lower edge in such a manner that the tape runs stably along the cylinder lead at a constant contact pressure.
    Type: Grant
    Filed: October 28, 1980
    Date of Patent: April 12, 1983
    Assignee: Hitachi, Ltd.
    Inventors: Seii Miyakawa, Manabu Ikeda, Shin Hashizume, Kazunori Iijima
  • Patent number: 4345282
    Abstract: A system for bringing a wire-shaped or tape-shaped carrier into contact with a carrier guide member in a predetermined position includes carrier withdrawing guide members each movable between an operative position in which the carrier is brought into contact with the carrier guide member and an inoperative position in which the carrier is out of contact with the carrier guide member. A plurality of strip-shaped power transmitting members formed to be flexible and connected at one end thereof to the carrier withdrawing guide members respectively are each slidably fitted in one of guide grooves of a guide groove member formed as an insert on the base. A drive connected to a motor is in engagement with the strip-shaped power transmitting members to drive the same and move the carrier withdrawing guide members connected to the strip-shaped power transmitting members, whereby the carrier withdrawing guide members can be moved between the operative and inoperative positions.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: August 17, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Seii Miyakawa, Akira Kawauchi, Kazunori Iijima, Takao Terayama, Masashi Yoshida, Hideyuki Kawase
  • Patent number: 4258399
    Abstract: A magnetic recording and reproducing apparatus, in which a magnetic tape is automatically mounted on a tape guiding drum containing rotary magnetic heads for the recording and reproduction of signals on and from the tape, is provided with a pair of tape drawing and mounting members which are engageable with a tape in a cassette mounted on the apparatus and movable along guide slots in guide board to draw the tape out of the cassette to a position in which the tape is mounted on and extends around the tape guiding drum. The tape drawing and mounting members are operatively connected to chains. Drive mechanism is provided to wind and unwind the chains so that the chains are moved along guide members to thereby move the tape drawing and mounting members, respectively, away from the cassette for the required tape drawing and mounting operation.
    Type: Grant
    Filed: January 31, 1979
    Date of Patent: March 24, 1981
    Assignee: Hitachi, Ltd.
    Inventors: Kazunori Iijima, Kazuo Honma, Takao Terayama, Masashi Yoshida, Hideyuki Kawase, Seii Miyakawa
  • Patent number: 4209898
    Abstract: An assembly line for parts of electronic and other equipment having a plurality of assembling stations, each station including a conveyor belt for successively conveying articles from the adjacent station, a drive source for the conveyor belt, means for stopping each of the articles including a stop lever for engaging a boss attached to each article for stopping each article in an operating position, means for positioning each article including a positioning pin for insertion in a hole formed in each article for positioning the article stopped in the operating position, a picking and placing unit for assembling each part with one of the articles after parts are successively fed by a supplying device, and an assembly line base machine provided with an operating panel for operating the drive source, article stopping means, article positioning means and picking and placing unit. Shifting of the stations and reorganization of the assembly line itself can be readily carried out.
    Type: Grant
    Filed: September 7, 1978
    Date of Patent: July 1, 1980
    Assignee: Hitachi, Ltd.
    Inventors: Jun Aoki, Takashi Hayashida, Shigesabroh Komatu, Seii Miyakawa, Naoki Takahasi
  • Patent number: 4144639
    Abstract: An apparatus for picking up one or several flexible annular parts such as an endless rubber belts from a random stack thereof, and for separating, during a conveyance of the picked up parts, into independent pieces. As the parts are successively conveyed to a feeding position a plurality of claws are inserted into the earliest part so as to stretch the part radially outwardly and hold the part in the stretched condition. The claws then convey the part to a fitting position with the claws then releasing the part from the stretched condition and transferring it to the article, thereby fitting the flexible annular part around the article.
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: March 20, 1979
    Assignee: Hitachi, Ltd.
    Inventors: Seii Miyakawa, Naoki Takahashi
  • Patent number: 4136366
    Abstract: A cassette tape recorder including a fixed base plate formed therein with a capstan inserting hole, a pair of openings for reel spindles to extend therethrough, an opening for a recording and reproducing head and an erasing head to extend therethrough and an opening for a pinch roller to extend therethrough, and formed on its upper surface with cassette position regulating portions so that the upper surface serves as a cassette attaching surface. The fixed base plate has on its underside sliding movement guide portions for guiding sliding parts, fastening portions for parts to be fastened and mounting portions for mounting springs so that the underside of the fixed base plate serves as a working part mounting surface.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: January 23, 1979
    Assignee: Hitachi, Ltd.
    Inventors: Kenji Ogiro, Shin Hashizume, Seii Miyakawa, Masaya Kishi
  • Patent number: 4070743
    Abstract: An apparatus for mounting or fitting a tension coil spring onto spring retaining members of an article, said apparatus being adapted to restrain said spring at its both hook ends so that it may be stretched as it is conveyed from a supplying position to a mounting position, and to relieve the spring at said mounting position to allow the spring to shrink so that the spring may be delivered to the retaining members to be retained thereat.
    Type: Grant
    Filed: September 1, 1976
    Date of Patent: January 31, 1978
    Assignee: Hitachi, Ltd.
    Inventors: Seii Miyakawa, Takashi Kobayashi, Masaya Kishi, Kenji Ogiro