Patents by Inventor Edward J. Grancagnolo

Edward J. Grancagnolo 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 duty constant use self closing gate
    Patent number: 5133152
    Abstract: A self closing gate comprising a pair of first and second parallel and spaced vertically extending stationary posts. The gate is mounted between the posts for rotation about the first post between positions closing the space between the posts and opening the space. A pivot assembly is mounted on the first post between one end of the gate and the first post, the pivot assembly comprising an outer rotatable housing tube and a stationary and vertically extending shaft. A stationary housing tube is mounted below and aligned with and for supporting the rotatable housing tube, the bottom annular edge of the rotatable housing tube and the top of the stationary tube being at a bias so that when the gate is opened it will rise. Gravity will close the gate when released.
    Type: Grant
    Filed: December 26, 1991
    Date of Patent: July 28, 1992
    Inventor: Edward J. Grancagnolo