Patents by Inventor Yoshikazu Iwasaki

Yoshikazu Iwasaki 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: 20130299063
    Abstract: Side portions of a plurality of strip-shaped members to be arranged on a drum are positioned accurately and joined with accuracy while sufficient joint strength is assured. The drum is rotated each time the strip-shaped member is arranged by arranging means, and a plurality of the strip-shaped members are sequentially arranged in a drum peripheral direction. The side portions of the adjacent strip-shaped members are joined by joining means so as to manufacture a constituent member of a tire. A joint portion whose thickness is relatively small is provided on one of the side portions of the strip-shaped member, and the plurality of strip-shaped members are arranged by overlapping the joint portion on one of the side portions and the other side portion. A width between the side portions is measured, the drum is rotated based on the measurement, and the positions of the side portions are matched.
    Type: Application
    Filed: June 26, 2013
    Publication date: November 14, 2013
    Applicant: Bridgestone Corporation
    Inventors: Yoshikazu IWASAKI, Yuuzo KUROKI
  • Patent number: 8221569
    Abstract: The present invention provides a method of producing a tire component member, which method allows rubber strip pieces to be sequentially attached without forming a gap therebetween.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: July 17, 2012
    Assignee: Bridgestone Corporation
    Inventor: Yoshikazu Iwasaki
  • Publication number: 20120152434
    Abstract: Side portions of strip-shaped members to be arranged on a drum are positioned and joined with accuracy while sufficient joint strength is assured. The drum is rotated each time the strip-shaped member is arranged by arranging means, and the strip-shaped members are sequentially arranged in a drum peripheral direction. The side portions of the adjacent strip-shaped members are joined by joining means so as to manufacture a constituent member of a tire. A joint portion is provided on one of the side portions of the strip-shaped member, and the strip-shaped members are arranged by overlapping the joint portion on one of the side portions and the other side portion. A width between both side portions of each strip-shaped member is measured, the drum is rotated based on the measurement result of the width, and the positions of the side portions to be overlapped and arranged are matched.
    Type: Application
    Filed: July 15, 2010
    Publication date: June 21, 2012
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yoshikazu Iwasaki, Yuuzo Kuroki
  • Patent number: 7717482
    Abstract: A vacuum conveying apparatus capable of adhering and conveying a sticky material such as an intermediate process material for tire, and of immediately separating the same at a release position. A vacuum face (120) of the vacuum conveying apparatus (100) is provided with a multitude of vacuum adhesion orifices (122) communicating with a vacuum duct, in a region below the vacuum duct, and there are provided a plurality of press-down pins capable of protruding from the vacuum face (120) at a release position of the material as adhered for forcibly adhering the same material and a plurality of air nozzles (125). Further, a plurality of L-shaped vacuum adhesion grooves (127), (128) are disposed in regions at respective end parts of the vacuum face (120) other than the region below the vacuum duct, for adhering the tip of the material to be adhered which moved in a slightly zigzag direction.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: May 18, 2010
    Assignee: Bridgestone Corporation
    Inventor: Yoshikazu Iwasaki
  • Publication number: 20100000660
    Abstract: The present invention provides a method of producing a tire component member, which method allows rubber strip pieces to be sequentially attached without forming a gap therebetween.
    Type: Application
    Filed: February 28, 2008
    Publication date: January 7, 2010
    Applicant: Bridgestone Corporation
    Inventor: Yoshikazu Iwasaki
  • Publication number: 20090104359
    Abstract: In the stranding machine 22, a rotating force about a wire material drawing direction (X-direction) is applied to a plurality of wire materials 18A to 18C drawn from bobbins 14A to 14C by rotation of a rotating body 30 arranged on a position apart from the bobbins 14A to 14C in the wire material drawing direction (X-direction), so that a stranded wire is formed. Therefore, the plurality of wire materials 18A to 18C does not rotate in the bobbins 14A to 14C at a stranded point 26 of the plurality of wire materials 18A to 18C. As a result, when the plurality of wire materials 18A to 18C is coated with unvulcanized rubber 88 in the rubber coating section 28, the plurality of wire materials 18A to 18C does not cross the inside of the unvulcanized rubber. For this reason, the unvulcanized rubber 88 sufficiently fills spaces between the plurality of wire materials 88, and sufficiently adheres to the surface of each of the wire materials 18A to 18C.
    Type: Application
    Filed: April 14, 2006
    Publication date: April 23, 2009
    Applicant: Bridgestone Corporation
    Inventor: Yoshikazu Iwasaki
  • Publication number: 20060055190
    Abstract: A vacuum conveying apparatus capable of adhering and conveying a sticky material such as an intermediate process material for tire, and of immediately separating the same at a release position. A vacuum face (120) of the vacuum conveying apparatus (100) is provided with a multitude of vacuum adhesion orifices (122) communicating with a vacuum duct, in a region below the vacuum duct, and there are provided a plurality of press-down pins capable of protruding from the vacuum face (120) at a release position of the material as adhered for forcibly adhering the same material and a plurality of air nozzles (125). Further, a plurality of L-shaped vacuum adhesion grooves (127), (128), are disposed in regions at respective end parts of the vacuum face (120) other than the region below the vacuum duct, for adhering the tip of the material to be adhered which moved in a slightly zigzag direction.
    Type: Application
    Filed: November 20, 2003
    Publication date: March 16, 2006
    Applicant: Bridgestone Corporation
    Inventor: Yoshikazu Iwasaki
  • Publication number: 20050167033
    Abstract: The steel wire 1 to be coated with rubber is pre-heated by passing through the first electro-magnetic induction heating device 10, the pre-heated steel wire is forwarded to the calendar device 30 and after coating both surfaces of the respective sides of the steel wire 1 with rubber layers through the calendar device 30, thus coated steel wire 1 with the rubber 2 is subjected again to the electro-magnetic induction heating by means of the second electro-magnetic induction heating device 20 placed at a position after the calendar device 30 thereby intensifying the adhesive strength between the steel wire 1 and the rubber in the vicinity of the boundary surface at the steel wire 1 so as to enhance the improvement of the adhesive strength between the steel codeā€¢steel wire and the rubber with which the foregoing is coated.
    Type: Application
    Filed: March 18, 2003
    Publication date: August 4, 2005
    Inventor: Yoshikazu Iwasaki