Patents by Inventor Jan van Coterlet

Jan van Coterlet 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).

  • Hydraulic-forced resonance-free vibratory sheet piling driving and extraction machine
    Patent number: 7407343
    Abstract: An apparatus and method for continuously preloading during installation and removal of steel sheet piles, steel pilings, and casing piles, with a telescoping, articulated boom having a free end for creating the downward driving force, a weighted base to provide support and stability for the boom, a connector at the free end of said boom to engage the piling, a modified resonance-free vibratory hammer, to allow for simultaneously vibrating the piling while applying to the piling the continuous downward or upward force.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: August 5, 2008
    Inventors: Peter van Halteren, Jan van Coterlet