Patents by Inventor August V. Spalding

August V. Spalding 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).

  • Method and apparatus for piled foundation improvement through freezing using surface mounted refrigeration units
    Patent number: 4836716
    Abstract: A method and apparatus for increasing the load bearing capacity of tubular piles by freezing an area of soil surrounding the piles. A refrigeration unit is located on the surface of an offshore structure and circulates cold brine to an isolated section of the pile. The brine freezes the soil surrounding the pile. Freezing the soil increases the surface friction beween the pile and the soil, providing increased load bearing capacity.
    Type: Grant
    Filed: February 25, 1986
    Date of Patent: June 6, 1989
    Assignee: Chevron Research Company
    Inventors: August V. Spalding, Mahmoud H. Sabet, Ronald O. Hamburger, Martin H. Luk
  • Method and apparatus for piled foundation improvement with freezing using down-hole refrigeration units
    Patent number: 4784528
    Abstract: The invention relates to a method and apparatus for increasing the capacity of a tubular driven pile. A refrigeration unit is lowered into the pile and grouted in place above a cement plug. The area between the refrigeration unit and the plug is filled with a secondary refrigerant. Seawater fills the pile above the refrigeration unit and is used for refrigeration unit cooling. The refrigeration unit cools the brine until the soil surrounding the pile is frozen. The adfreeze strength of the frozen soil and the pile increase the pullout resistance of the pile. Further, the end-bearing capacity of the pile is increased as a result of the large frozen mass surrounding the pile.
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: November 15, 1988
    Assignee: Chevron Research Company
    Inventors: August V. Spalding, Richard C. Lundberg, Ronald O. Hamburger, Mahmoud H. Sabet, Gerald F. Borrmann
  • Method and apparatus for piled foundation improvement with freezing using down-hole refrigeration units
    Patent number: 4723876
    Abstract: The invention relates to a method and apparatus for increasing the capacity of a tubular driven pile. A refrigeration unit is lowered into the pile and grouted in place above a cement plug. The area between the refrigeration unit and the plug is filled with a secondary refrigerant. Seawater fills the pile above the refrigeration unit and is used for refrigeration unit cooling. The refrigeration unit cools the brine until the soil surrounding the pile is frozen. The adfreeze strength of the frozen soil and the pile increase the pull-out resistance of the pile. Further, the end-bearing capacity of the pile is increased as a result of the large frozen mass surrounding the pile.
    Type: Grant
    Filed: February 25, 1986
    Date of Patent: February 9, 1988
    Assignee: Chevron Research Company
    Inventors: August V. Spalding, Richard C. Lundberg, Ronald O. Hamburger, Mahmoud H. Sabet, Gerald F. Borrmann