Patents by Inventor Ian Monroe

Ian Monroe 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).

  • Mine cooling power recovery system
    Patent number: 4991998
    Abstract: A mine cooling power recovery system wherein a low-pressure slurry pump for charging the mud slurry produced in a mine into a pressure changeover feed chamber is arranged in parallel to a warm water charging low-pressure pump and each of outlets of the two pumps has a changeover valve so that a single power recovery system pumps up both the mud slurry and a warm water out of the mine. A slurry sedimentation tank may be provided on the ground surface.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: February 12, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Yukishige Kamino, Makoto Saito, Kenji Uchida, Naoshi Furutani, Ian Monroe