Patents by Inventor Muraichi Iwasaki

Muraichi Iwasaki 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).

  • Device for automatically lapping valve seat
    Patent number: 4007561
    Abstract: The disclosed device comprises a supporting disc, a sleeve centrally pendent from the disc, a hollow driven shaft rotatably and axially slidably extending through the disc and sleeve, and a lapping disc fixed to that end of the shaft extending from the sleeve. With the supporting disc disposed upon a valve body including a valve seat to be lapped, the lapping disc can contact the valve seat to fit it during the rotation of the shaft. With the lapping disc raised from the lapped valve seat, a wiper on the disc is actuated to wipe the latter. The seat can be observed through a periscope type observation glass extending through the hollow shaft.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: February 15, 1977
    Assignee: Okano Valve Seizo Kabushiki Kaisha
    Inventors: Masami Okano, Morito Sadamura, Muraichi Iwasaki, Takeshi Suzuki, Yasushi Utunomiya, Yoshihiro Yajima, Yozi Yamauchi, Yutaka Terawaki