Patents Assigned to 501 Matrix Service, Inc.
  • Patent number: 5036995
    Abstract: A rim space sealing device comprising a peripheral sealing ring of over-lapped shoe segments attached to a floating cover within a storage tank. Spring loaded hanger-pushers and horizontal springs keep the peripheral sealing ring of shoe segments pressed against the tank wall and also keep the floating cover centered within the tank. The space between the peripheral sealing ring of shoe segments and the floating cover is covered by a flexible fabric that prevents product loss. Vertical movement of the individual shoe segments over each other is prevented by a series of circumferentially arranged rods. The over-lap of the shoe segments is restricted by a series of bars forming expansion-contraction spaces.
    Type: Grant
    Filed: July 13, 1990
    Date of Patent: August 6, 1991
    Assignee: 501 Matrix Service, Inc.
    Inventor: Robert B. Wagoner