Patents by Inventor Haruyuki Shimayama

Haruyuki Shimayama 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).

  • Mechanism for connecting ornamental parts of wrist watch
    Patent number: 5951193
    Abstract: A mechanism for connecting ornamental parts of wrist watches that permit easily connecting and disconnecting ornamental parts without using any special tool and without marring the appearance of wrist watches. A stepped pin is inserted in a larger-diameter bore of a cocoon-shaped ring fitted in an end piece and a bore in a watch casing. Then, a smaller-diameter part of the stepped pin is moved into a smaller-diameter bore by pulling the watch casing and a band longitudinally. With the stepped pin thus securely held in place, the watch casing and band are firmly connected.
    Type: Grant
    Filed: February 15, 1996
    Date of Patent: September 14, 1999
    Assignee: Kabushiki Kaisha Hattori Seiko
    Inventors: Akio Yamamoto, Taro Tanaka, Haruyuki Shimayama, Shunichi Kojima, Noboru Hosokawa