Patents by Inventor Endre Zsigmond

Endre Zsigmond 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).

  • Transmix prevention lock
    Patent number: 7644723
    Abstract: A method and apparatus for preventing a dense liquid such as diesel fuel from being dispensed into a storage tank that contains a less dense liquid, such as gasoline fuel and vice versa. The unloading process happens by gravity through a vertical down hole. The invention uses the gravitational flow of the fluid, a movable float that is moved by contact with a fluid of a predetermined density, and a magnetic member to activate the stopping feature.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: January 12, 2010
    Inventor: Endre Zsigmond
  • Transmix prevention lock
    Publication number: 20060260683
    Abstract: A method and apparatus for preventing a dense liquid such as diesel fuel from being dispensed into a storage tank that contains a less dense liquid, such as gasoline fuel and vice versa. The unloading process happens by gravity through a vertical down hole. The invention uses the gravitational flow of the fluid, a movable float that is moved by contact with a fluid of a predetermined density, and a magnetic member to activate the stopping feature.
    Type: Application
    Filed: May 18, 2005
    Publication date: November 23, 2006
    Inventor: Endre Zsigmond