Patents by Inventor David Coffman

David Coffman 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).

  • Publication number: 20060207394
    Abstract: The invention relates to an apparatus and method for repairing a vibration attenuator used with a lathe wherein a lathe includes a cutter chassis, a lathe arbor assembly, and a piece of equipment to be machined mounted on said lathe arbor assembly. The lathe has at least one cutting tool supported by the cutter chassis for cutting or resurfacing the mounted equipment. A vibration attenuator dampens the natural vibrations caused by the lathing operation via opposing dampening pads that the attenuator holds against the equipment. The dampening pads' equipment-engaging surfaces deteriorate during the operation of said lathe. A repair pad is fastened to at least one of the dampening pads following the excessive deterioration of at least one of the equipment-engaging surfaces. A spring connecting the arms of the attenuator may also be replaced.
    Type: Application
    Filed: March 17, 2005
    Publication date: September 21, 2006
    Inventor: David Coffman
  • Patent number: D409633
    Type: Grant
    Filed: August 24, 1998
    Date of Patent: May 11, 1999
    Assignee: Valenite Inc.
    Inventors: Thomas Bernadic, David Coffman, Sanjay Sarnaik