Patents by Inventor Micha{umlaut over (e)}l Pontoppidan

Micha{umlaut over (e)}l Pontoppidan 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).

  • Discharging by-pass for high pressure direct injection pump
    Patent number: 6170473
    Abstract: The invention concerns a relief device for a high-pressure direct-injection pump supplying petrol to an automobile vehicle engine injector manifold, the pump being supplied with fuel by a low-pressure electric fuel pump communicating with a fuel tank and the high pressure delivered being regulated by a pressure regulator, said pressure regulator taking the form of a three-way valve supplying fuel to the manifold via the fuel pump below a predetermined engine rotation speed threshold and then supplying the manifold via the top part of the injection pump when the engine speed is above the predetermined threshold.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: January 9, 2001
    Assignee: Magneti Marelli France
    Inventor: Micha{umlaut over (e)}l Pontoppidan