Patents by Inventor Edwin L. Grauel

Edwin L. Grauel 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).

  • Keeled kite construction
    Patent number: 3951363
    Abstract: A construction for a keeled kite wherein the keel is a flexible tubular member fixed to the underside of a kite canopy and is open at its leading end and closed at its trailing end so as to be inflated by the oncoming wind to stabilize the kite under varying wind conditions which would cause kites having conventional flat keels to power loop or crash, either because of excessive wind velocity or because of low wind velocity.
    Type: Grant
    Filed: November 27, 1974
    Date of Patent: April 20, 1976
    Inventor: Edwin L. Grauel