Patents by Inventor Shigeki Yasui

Shigeki Yasui 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).

  • Apparatus and method for making slotted rod for optical cable
    Patent number: 6190583
    Abstract: The present invention relates to an apparatus and method for making a slotted rod for an optical cable, which improves manufacturing efficiency, while alleviating the load applied to the apparatus. In the present invention, a rotatable die for forming a slot in a resin surface covering a tension member is rotated about the moving direction of the tension member such that the rotatable die alternately reverses its rotational direction for every predetermined reverse pitch of the tension member, and the tension member is alternately twisted in rotational directions opposite to the rotational directions of the rotatable die in synchronization with the rotation of the rotatable die.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: February 20, 2001
    Assignee: Sumitomo Electric Industries Ltd.
    Inventors: Shigeru Suemori, Takehiko Okada, Shigeki Yasui