Patents by Inventor John R. Shively

John R. Shively 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).

  • Door and window closer
    Patent number: 4003102
    Abstract: A spring or gravity motor having an override mechanism for a movable window or door including a pneumatic cylinder, a piston, a check valve admitting air to the cylinder, an override valve permitting pressure dumping of the air in the cylinder during movement of the door or window at a speed greater than the normal closing speed by the motor.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: January 18, 1977
    Assignee: Elmer E. Jones
    Inventors: Nathaniel L. Hawks, John R. Shively