Patents by Inventor Parrino Andrea

Parrino Andrea 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).

  • Patent number: 6457607
    Abstract: A dispensing unit for a fluid dispensing machine comprises at least an inlet duct and an outlet duct for fluid products, connected to a variable-volume pumping chamber comprising at least one flexible wall. Two non return valves mounted in counter-phase are located in the inlet and outlet ducts, respectively. The pumping chamber is coupled to actuator means comprising a stepper motor, a screw-nut screw unit and a carriage. The carriage moves the pumping chamber from a zero position in which the chamber has a maximum volume to an upper limit in which the chamber has a minimum volume. An optic sensor defines the zero point of the pumping chamber so as to guarantee precision and repeatability of the dispensing operations.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: October 1, 2002
    Assignee: Corob International AG
    Inventors: Parrino Andrea, Manfredini Giorgio, Mazzalveri Leopoldo