Patents by Inventor Masanori Koma

Masanori Koma 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).

  • Bolt/nut unfastening preventing structure
    Patent number: 6146070
    Abstract: After a bolt (3) and a double-structured nut (6) are fastened to each other, it is not possible to unfasten the bolt (3) and nut (6), because a predetermined part of the nut (6) is designed to break when subjected to a predetermined torque necessary for fastening the nut (6), and thereby permitting the remaining part of the nut (6) to remain fastened securely to the bolt (3) after the fastening operation of the bolt (3) and nut (6) is performed. The nut (6) double-structure including a cylindrical cover member (7) may alternatively be utilized for a similar double-structured bolt head (42) having a protective cover (43).
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: November 14, 2000
    Assignee: MTS Co. Ltd.
    Inventor: Masanori Koma