Patents Assigned to Japan Marine Technologies Ltd.
  • Stern tube sealing apparatus
    Patent number: 6481720
    Abstract: The invention provides a stern tube sealing apparatus which prevents an abrasion by cooling and lubricating a sliding contact surface of a first seal ring, prevents a foreign substance and a seawater from entering so as to further improve a durability of a seal ring and a liner, intends to make the sealing apparatus compact and reduce a cost by using no pressurizing apparatus, and has a high reliability of a seal system.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: November 19, 2002
    Assignee: Japan Marine Technologies Ltd.
    Inventors: Hisashi Yoshida, Minoru Takayasu