Patents by Inventor Tsugio Hirata

Tsugio Hirata 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).

  • Web splicing method and web splicing apparatus
    Publication number: 20050098677
    Abstract: The present invention provides a web splicing method and a web splicing apparatus with which a line velocity on an output side of the splicing apparatus does not fluctuate through a web splicing operation. The method and apparatus are further operable to maintain a line velocity at a predetermined velocity after the web splicing operation. The method of the present invention includes the steps of: connecting a second web Wb fed out from a second roll B to a first web Wa; cutting off the first web Wa at a position between a point at which the second web Wb is connected to the first web Wa and a first roll A; spinning the second roll B to feed out the second web Wb; obtaining a value of a diameter of the second roll B based on a state of an accumulator 4; and controlling a circumferential velocity of the second roll B based on the obtained diameter.
    Type: Application
    Filed: December 17, 2004
    Publication date: May 12, 2005
    Inventors: Tsugio Hirata, Yoshinobu Oyagi
  • Web splicing method and web splicing apparatus
    Patent number: 6886772
    Abstract: The present invention provides a web splicing method and a web splicing apparatus with which a line velocity on an output side of the splicing apparatus does not fluctuate through a web splicing operation. The method and apparatus are further operable to maintain a line velocity at a predetermined velocity after the web splicing operation. The method of the present invention includes the steps of: connecting a second web Wb fed out from a second roll B to a first web Wa; cutting off the first web Wa at a position between a point at which the second web Wb is connected to the first web Wa and a first roll A; spinning the second roll B to feed out the second web Wb; obtaining a value of a diameter of the second roll B based on a state of an accumulator 4; and controlling a circumferential velocity of the second roll B based on the obtained diameter.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: May 3, 2005
    Assignee: Zuiko Corporation
    Inventors: Tsugio Hirata, Yoshinobu Oyagi
  • Web splicing method and web splicing apparatus
    Publication number: 20030209629
    Abstract: The present invention provides a web splicing method and a web splicing apparatus with which a line velocity on an output side of the splicing apparatus does not fluctuate through a web splicing operation. The method and apparatus are further operable to maintain a line velocity at a predetermined velocity after the web splicing operation. The method of the present invention includes the steps of: connecting a second web Wb fed out from a second roll B to a first web Wa; cutting off the first web Wa at a position between a point at which the second web Wb is connected to the first web Wa and a first roll A; spinning the second roll B to feed out the second web Wb; obtaining a value of a diameter of the second roll B based on a state of an accumulator 4; and controlling a circumferential velocity of the second roll B based on the obtained diameter.
    Type: Application
    Filed: May 5, 2003
    Publication date: November 13, 2003
    Inventors: Tsugio Hirata, Yoshinobu Oyagi