Patents by Inventor Arnold Richard Engel

Arnold Richard Engel 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).

  • Security system
    Patent number: 6705652
    Abstract: A door security system utilizes a bar that spans the distance across a door and prevents the door from being opened. The bar combines an elastic, flexible hollow rod with a cable that is pliable but generally does not flex. The bar flexes when an individual attempts to force open the door against the bar. When the bar flexes it generates a force that acts to close the door.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: March 16, 2004
    Inventor: Arnold Richard Engel
  • Security system
    Publication number: 20030234546
    Abstract: A door security system utilizes a bar that spans the distance across a door and prevents the door from being opened. The bar combines an elastic, flexible hollow rod with a cable that is pliable but generally does not flex. The bar flexes when an individual attempts to force open the door against the bar. When the bar flexes it generates a force that acts to close the door.
    Type: Application
    Filed: June 25, 2002
    Publication date: December 25, 2003
    Inventor: Arnold Richard Engel