Patents by Inventor David Trevas

David Trevas 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).

  • Rotary impact well drilling system and method
    Patent number: 7096980
    Abstract: A system and method for applying rotary percussive impacts to a drill bit, according to which an anvil is connected to the bit and a hammer is driven in one direction in the anvil when the bit encounters a relatively large load. Energy is stored during the movement of the hammer in the one direction and the stored energy is released to drive the hammer in a direction opposite the first direction to produce the percussive impacts.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: August 29, 2006
    Assignee: Halliburton Energy Services, Inc.
    Inventor: David Trevas
  • Rotary impact well drilling system and method
    Publication number: 20040222021
    Abstract: A system and method for applying rotary percussive impacts to a drill bit, according to which an anvil is connected to the bit and a hammer is driven in one direction in the anvil when the bit encounters a relatively large load. Energy is stored during the movement of the hammer in the one direction and the stored energy is released to drive the hammer in a direction opposite the first direction to produce the percussive impacts.
    Type: Application
    Filed: December 5, 2003
    Publication date: November 11, 2004
    Applicant: Halliburton Energy Services, Inc.
    Inventor: David Trevas