Patents by Inventor Edward J. Dorstewitz

Edward J. Dorstewitz 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).

  • Collapsible safety sign
    Patent number: 6622409
    Abstract: A safety sign is provided which includes a collapsible tripod base that removably supports a hollow tube therein. The hollow tube stores a foldable fabric sign therein which includes pockets at the upper, left and right corners thereof and defines a mast for the sign. The sign is supported on the base by a vertical support rod and includes a horizontal cross member. The horizontal cross member is twistable independently of the base and mast wherein this free-floating arrangement facilitates assembly of the sign while also permitting the sign to twist during windy conditions and allow the wind to spill around the sign in order to prevent the sign from toppling over.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: September 23, 2003
    Inventor: Edward J. Dorstewitz
  • Collapsible safety sign
    Publication number: 20030029067
    Abstract: A safety sign is provided which includes a collapsible tripod base that removably supports a hollow tube therein. The hollow tube stores a foldable fabric sign therein which includes pockets at the upper, left and right corners thereof and defines a mast for the sign. The sign is supported on the base by a vertical support rod and includes a horizontal cross member. The horizontal cross member is twistable independently of the base and mast wherein this free-floating arrangement facilitates assembly of the sign while also permitting the sign to twist during windy conditions and allow the wind to spill around the sign in order to prevent the sign from toppling over.
    Type: Application
    Filed: October 15, 2002
    Publication date: February 13, 2003
    Inventor: Edward J. Dorstewitz
  • Collapsible safety sign
    Patent number: 6463687
    Abstract: A safety sign is provided which includes a collapsible tripod base that removably supports a hollow tube therein. The hollow tube stores a foldable fabric sign therein which includes pockets at the upper, left and right corners thereof and defines a mast for the sign. The sign is supported on the base by a vertical support rod and includes a horizontal cross member. The horizontal cross member is twistable independently of the base and mast wherein this free-floating arrangement facilitates assembly of the sign while also permitting the sign to twist during windy conditions and allow the wind to spill around the sign in order to prevent the sign from toppling over.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: October 15, 2002
    Inventor: Edward J. Dorstewitz