Patents by Inventor Toshiaki Hirotsu

Toshiaki Hirotsu 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: 4466366
    Abstract: In a conventional tufting machine forming cut pile only, a looper is supported in a looper block sliding toward a cooperative needle, and, in each periodic time of tufting reciprocation, it is determined selectively whether a looper is pushed out from a looper block or not and whether a loop of pile yarn is seized thereby at a looper bill releasably or securely. The loop seized releasably is released from a looper and forms loop pile. The loop seized securely is not released from a looper and receives engagement of a looper and a knife to form cut pile. In order to determine selectively whether the looper is pushed out or not, a conventional pattern apparatus can be used.
    Type: Grant
    Filed: February 11, 1983
    Date of Patent: August 21, 1984
    Assignee: Haniisuchiiru Co., Ltd.
    Inventor: Toshiaki Hirotsu