Patents by Inventor Brian Widenhoefer

Brian Widenhoefer 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).

  • Reciprocating hammer with downward thrust assist
    Patent number: 10407860
    Abstract: A reciprocating hammer with a two-stage acceleration of a pile driving ram, including a first stage in which initial gravitational acceleration is assisted by a thruster and a second stage in which the initially accelerated ram is allowed to further accelerate under the force of gravity alone for the remainder of the pile driver stroke. The force assist in the initial acceleration stage acts as a force multiplier, such that the anvil delivers impact forces to the pile greater than the impact forces achievable by gravity alone for a given stroke length/ram weight combination.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: September 10, 2019
    Assignee: Hercules Machinery Corporation
    Inventors: John Jinnings, Brian Widenhoefer, James J. Connerley
  • RECIPROCATING HAMMER WITH DOWNWARD THRUST ASSIST
    Publication number: 20160333542
    Abstract: A reciprocating hammer with a two-stage acceleration of a pile driving ram, including a first stage in which initial gravitational acceleration is assisted by a thruster and a second stage in which the initially accelerated ram is allowed to further accelerate under the force of gravity alone for the remainder of the pile driver stroke. The force assist in the initial acceleration stage acts as a force multiplier, such that the anvil delivers impact forces to the pile greater than the impact forces achievable by gravity alone for a given stroke length/ram weight combination.
    Type: Application
    Filed: January 22, 2015
    Publication date: November 17, 2016
    Inventors: John Jinnings, Brian Widenhoefer, James J. Connerley