Patents by Inventor John R. Liegakos

John R. Liegakos 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).

  • Machining fixture with self-contained hydraulics
    Patent number: 8028976
    Abstract: A new arrangement for machining parts is disclosed. The parts to be machined are mounted on fixture plates on a fixture. Using a stationary hydraulic line, hydraulic equipment is then pressurized by a pump within the fixture. The pump is mechanically powered by a separate (and disconnectable) power source. A rotatable coupling is attached to the pump. It receives a spindle from a CNC machine, enabling the machine to activate the pump by rotating the spindle while the spindle is received in the coupling. The coupling has axially extending prongs that form slots that accommodates the spindle. The prongs have ends that taper inwardly toward the slots. The spindle is also used to actuate a pressure release valve. The fixture also has at least four angled work faces and an access face that separates two of those faces. In operation, parts are first mounted on the fixture plates. The fixture is then moved to a work area, where the spindle actuates the pump, pressuring clamps that lock the parts in position.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: October 4, 2011
    Assignee: Ocenco, Inc.
    Inventors: Jerry R. Ring, John R. Liegakos, Robert R. Kirykowicz, John S. Grzyb
  • Machining fixture with self-contained hydraulics
    Publication number: 20090096145
    Abstract: A new arrangement for machining parts is disclosed. The parts to be machined are mounted on fixture plates on a fixture. Using a stationary hydraulic line, hydraulic equipment is then pressurized by a pump within the fixture. The pump is mechanically powered by a separate (and disconnectable) power source. A rotatable coupling is attached to the pump. It receives a spindle from a CNC machine, enabling the machine to activate the pump by rotating the spindle while the spindle is received in the coupling. The coupling has axially extending prongs that form slots that accommodates the spindle. The prongs have ends that taper inwardly toward the slots. The spindle is also used to actuate a pressure release valve. The fixture also has at least four angled work faces and an access face that separates two of those faces. In operation, parts are first mounted on the fixture plates. The fixture is then moved to a work area, where the spindle actuates the pump, pressuring clamps that lock the parts in position.
    Type: Application
    Filed: October 15, 2007
    Publication date: April 16, 2009
    Applicant: OCENCO, INC.
    Inventors: Jerry R. Ring, John R. Liegakos, Robert R. Kirykowicz, John S. Grzyb