Patents by Inventor Masayuki Yoshiga

Masayuki Yoshiga 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).

  • Push-pull chain and reciprocating apparatus using the same
    Patent number: 5157912
    Abstract: A push-pull chain having a lock mechanism provided between inner links and outer links, which are rotatably coupled together by link pins, to thereby permit the mutual pivotal movement of both links to be restricted. The lock mechanism is provided to both links on an axial line parallel to each link pin. As a lock pin moves parallel on the axial line and it is fitted in both links, the mutual pivotal movement of the links is locked.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: October 27, 1992
    Assignee: Ryoei Engineering Co., Ltd.
    Inventors: Masayuki Yoshiga, Takuya Nomura