Patents by Inventor David Lego

David Lego 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).

  • HEAVY DOOR ASSIST SYSTEM
    Publication number: 20120180469
    Abstract: A heavy door open and close system is provided using a pneumatic cylinder utilizing on board vehicle air. The system includes a hydraulic cylinder which is adapted to lock the door in either an open or closed position. A manual activation system uses a hydraulic valve to unlock the hydraulic cylinder and a pneumatic valve to actuate the pneumatic cylinder to open or close the door. An emergency pneumatic actuation system is also provided for use when the system loses the use of on board air of the vehicle.
    Type: Application
    Filed: October 6, 2010
    Publication date: July 19, 2012
    Applicant: PARKER HANNIFIN CORPORATION
    Inventors: Robert Knepple, Andrew Bishop, David Lego, Dominic Number, Paxton Augustine