Patents by Inventor Leslie M. Lenny

Leslie M. Lenny 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).

  • Modification to floating roof tank design
    Patent number: 4957214
    Abstract: The present invention relates to floating roof storage tanks, having a tank shell which is supported on a fixed base, and a floating roof supported by the liquid stored in the tank. Included in the base or roof is a displacement means to substantially displace the stored liquid when the floating roof is in its lowest position. In this way the volume of the heel of liquid unable to be removed from the tank is reduced. The displacement means can take the form of a container which protrudes downwardly from the roof, or a layer of ballast on the base of the tank. The ballast layer can be a liquid heavier than the stored liquid which can be retained in a dam if desired.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: September 18, 1990
    Assignee: California Texas Oil Corporation
    Inventor: Leslie M. Lenny
  • Modification to floating roof tank design
    Patent number: 4790447
    Abstract: A floating roof liquid storage tank, having a tank shell which is supported on a fixed base, and a floating roof supported by the liquid stored in the tank. Included in the base or roof is a displacement device to substantially displace the stored liquid when the floating roof is in its lowest position. In this way the volume of the heel of liquid unable to be removed from the tank is reduced. The displacement device can take the form of a container which protrudes downwardly from the roof, or a layer of ballast on the base of the tank. The ballast layer can be a liquid heavier than the stored liquid which can be retained in a dam if desired.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: December 13, 1988
    Assignee: Caltex Oil (Australia) Pty. Limited
    Inventor: Leslie M. Lenny