The door guard of the present invention utilizes an L-shaped bar which binds against the panic bar of the door and against the door frame to prevent the panic bar from being pulled down and thus opening the door. The L-shaped bar has a front and side leg. The front leg has attached to it an upper and lower tab which fits one on either side of the panic bar. The side leg binds against the door frame.
Iowa State University Research Foundation, Inc.
Matthews, Edward H. Jr. and White, William A. Jr., "Door guard" (1982). Iowa State University Patents. 47.