Patents by Inventor David A. Lingbeck

David A. Lingbeck 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 lock and latch assembly
    Patent number: 6655178
    Abstract: A door lock and latch assembly for securely locking a door to prevent a person from using a tool to spread the door away from the door frame. The door lock and latch assembly includes a lock and latch support assembly being adapted to mount to a door and including a rotatable shaft; and also includes a deadbolt lock assembly being mounted to the rotatable shaft and being adapted to be disposed in the door; and further includes a latch assembly including a lever being mounted to the rotatable shaft and also including a catch being adapted to mount to a structure adjacent to the door.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: December 2, 2003
    Inventor: David A. Lingbeck