Patents by Inventor Tsugukiyo Hirayama

Tsugukiyo Hirayama 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).

  • Apparatus and method for drop-down/lift-up boat mounted on marine vessel
    Patent number: 7827925
    Abstract: The present invention provides an apparatus and method of a dock system for launch and recovery of a stowed boat, which is capable of launching and recovering the boat during navigation of a marine vessel at a high headway speed. The launch and recovery apparatus has a stern dock (2) for accommodating the boat (10) therein. The apparatus launches the boat outboard through a stern opening and recovers the boat from the outboard area by entry of the boat into the dock. The apparatus is provided with a conduit device (11) so that seawater surrounding the vessel is drawn through an intake port (12) and is delivered to the dock through an outlet port (13). In the dock, a backward water stream is generated, which is to be discharged outboard through the stern opening.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: November 9, 2010
    Assignee: National University Corporation Yokohama National University
    Inventors: Tsugukiyo Hirayama, Takehiko Takayama, Yoshiaki Hirakawa
  • Apparatus and method for drop-down/lift-up boat mounted on marine vessel
    Publication number: 20090056611
    Abstract: The present invention provides an apparatus and method of a dock system for launch and recovery of a stowed boat, which is capable of launching and recovering the boat during navigation of a marine vessel at a high headway speed. The launch and recovery apparatus has a stern dock (2) for accommodating the boat (10) therein. The apparatus launches the boat outboard through a stern opening and recovers the boat from the outboard area by entry of the boat into the dock. The apparatus is provided with a conduit device (11) so that seawater surrounding the vessel is drawn through an intake port (12) and is delivered to the dock through an outlet port (13). In the dock, a backward water stream is generated, which is to be discharged outboard through the stern opening.
    Type: Application
    Filed: May 10, 2006
    Publication date: March 5, 2009
    Inventors: Tsugukiyo Hirayama, Takehiko Takayama, Yoshiaki Hirakawa