Patents by Inventor Tadashi Nakagawasai

Tadashi Nakagawasai 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).

  • Machine for driving vertical members
    Patent number: 4195698
    Abstract: A building machine wherein a leader is supported vertically during an operation, an endless chain is engaged around upper and lower sprockets of said leader, and a base body is mounted on said chain and is forced to move vertically along said leader. A pile which is a member to be driven in, is mounted on a pile holding portion of said base body.
    Type: Grant
    Filed: January 20, 1978
    Date of Patent: April 1, 1980
    Inventor: Tadashi Nakagawasai