Patents by Inventor Minoru Yamachika

Minoru Yamachika 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).

  • Process and apparatus for crimping filament yarn
    Patent number: 4188691
    Abstract: Process and apparatus for crimping a filament yarn, the process employed comprising forcing a hot fluid entrained filament yarn into a stuffing chamber in one direction, forcing a cold fluid from an opposite direction into a staying control chamber located down stream of said stuffing chamber, exhausting said hot fluid from the stuffing chamber and exhausting said cold fluid from the staying control chamber respectively.The apparatus comprises a hot fluid jet nozzle having a hot fluid supply conduit connected thereto, a stuffing chamber having a hot fluid exit, a staying control chamber having a cold fluid exit, and a cold fluid supply device in said order.
    Type: Grant
    Filed: September 20, 1977
    Date of Patent: February 19, 1980
    Assignee: Teijin Limited
    Inventors: Mitsuo Matsumoto, Kazushige Hayashi, Tsutomu Nakamura, Minoru Yamachika