Patents Assigned to H. R. Black Co.
  • Patent number: 6896801
    Abstract: The magnetic separator has a tank with a pair of dual conveyor chains, spaced apart, at opposite sides of the tank. A plurality of frames with spaced apart magnetic rods are suspended from the conveyor chains in a manner allowing the frames to swivel and always hang vertically as the chains traverse their endless path. The liquid in the tank flows through the frames and ferrous particles are attracted to the magnetic rods. The rods are cleaned and the ferrous particles removed at a wiping station. Each frame has a scraping edge which contacts the bottom of the tank and drags out the non-magnetic particulate which has separated from the liquid.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: May 24, 2005
    Assignee: H.R. Black Co., Inc.
    Inventors: Raymond L. Anderson, Jason L. Sisler
  • Patent number: 6066255
    Abstract: An apparatus for filtering machine coolant which includes a filtering belt conveyor having a series of bars on the outer surface of the filtering belt conveyor. The filtering belt conveyor is located inside of a tank along with a separate drag conveyor which removes fines that are sprayed off the filtering belt conveyor. There is a partition in the tank between the filtering belt conveyor and the separate drag conveyor.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: May 23, 2000
    Assignee: H. R. Black Co.
    Inventor: Raymond Anderson
  • Patent number: 6042726
    Abstract: A filtration apparatus designed to remove solid contaminants from a liquid includes an endless filtration belt located in a liquid tank, so that liquid flows through minute openings in the belt into a liquid collection box located within the belt envelope. Edge areas of the belt are engaged with annular support walls carried by the tank side walls, such that a continuous seal is provided against migration of contaminants around the belt side edges. Contaminants collecting on the belt surface can be periodically removed by moving the belt across a spray system that dislodges the contaminants from the belt into the tank. A drag conveyor removes contaminants from the tank.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: March 28, 2000
    Assignee: H.R. Black Co., Inc.
    Inventor: Raymond Anderson