Patents by Inventor Grant Bearss

Grant Bearss 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).

  • Pile driver with energy monitoring and control circuit
    Patent number: 7156188
    Abstract: A pile driver comprises a hammer for impacting a pile, a velocity sensor for measuring the velocity at impact, and a control system for adjusting the hammer stroke in accordance with the readings from the velocity sensor so that the optimal impact energy is imparted to the head of the pile. Optionally, the system further comprises a pile driving analyzer (including at least one strain gauge and/or an accelerometer) mounted on the side of the pile itself to determine whether the impact loading on the pile is below the maximum allowable stress. If the pile driving analyzer senses an overload of stress on the pile, the control system will reduce the velocity of the subsequent hammer stroke so that it no longer exceeds the maximum allowable stress.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: January 2, 2007
    Assignee: Bermingham Construction Limited
    Inventors: Patrick Bermingham, Mark Triska, Michael Justason, Grant Bearss, David Hoover, Stefano Gabaldo, Tim Rosenberger
  • Pile driver with energy monitoring and control circuit
    Publication number: 20050023014
    Abstract: A pile driver comprises a hammer for impacting a pile, a velocity sensor for measuring the velocity at impact, and a control system for adjusting the hammer stroke in accordance with the readings from the velocity sensor so that the optimal impact energy is imparted to the head of the pile. Optionally, the system further comprises a pile driving analyzer (including at least one strain gauge and/or an accelerometer) mounted on the side of the pile itself to determine whether the impact loading on the pile is below the maximum allowable stress. If the pile driving analyzer senses an overload of stress on the pile, the control system will reduce the velocity of the subsequent hammer stroke so that it no longer exceeds the maximum allowable stress.
    Type: Application
    Filed: May 12, 2004
    Publication date: February 3, 2005
    Applicant: Bermingham Construction Limited
    Inventors: Patrick Bermingham, Mark Triska, Michael Justason, Grant Bearss, David Hoover, Stefano Gabaldo, Tim Rosenberger