Patents by Inventor James D. Knebel

James D. Knebel 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).

  • Neutrally mounted same vibration frequency impact tool
    Patent number: 5213017
    Abstract: A battery powers the motor of an electrically powered impact gun. The body of the gun vibrates at some frequency and an aluminum brush holder therein is configured to vibrate at about the same frequency to minimize chatter and arcing of the brushes on the commutator bars.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: May 25, 1993
    Assignee: Aircraft Dynamics Corporation
    Inventors: Jack D. Jones, James D. Knebel
  • Method of preventing twisted-off bolt head while tightening a bolt
    Patent number: 5083358
    Abstract: To prevent the head of small sized bolts from being twisted off by a rotary electrically powered impact tool, a structure is provided between the outlet drive of the impact tool and the head of the bolt to minimize the torque transmitted between the impact tool and the bolt head.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: January 28, 1992
    Assignee: Aircraft Dynamics Corporation
    Inventors: Jack D. Jones, James D. Knebel
  • Torque limiting apparatus
    Patent number: 5070750
    Abstract: To prevent the head of small sized bolts from being twisted off by a rotary electrically powered impact tool, a structure is provided between the outlet drive of the impact tool and the head of the bolt to minimize the torque transmitted between the impact tool and the bolt head.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: December 10, 1991
    Assignee: Aircraft Dynamics Corporation
    Inventors: Jack D. Jones, James D. Knebel