Patents by Inventor Simon Westra

Simon Westra 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).

  • Suction anchor and method of installing a suction anchor
    Patent number: 4432671
    Abstract: A problem which sometimes occurs is that the plug of bottom material which enters the interior of a suction anchor during installation of the anchor may disturb the pumping process, since the reduced pressure may cause expansion of the said plug, the result being that the anchor does not reach the desired depth in the waterbottom. According to the invention this problem is solved by removing the upper part of said plug from said interior by introducing water into said interior, forming a mixture of bottom particles and water and removing the mixture formed from the said interior.
    Type: Grant
    Filed: November 23, 1981
    Date of Patent: February 21, 1984
    Assignee: Shell Oil Company
    Inventors: Simon Westra, Johannes R. Hogervorst