Patents by Inventor Alfonso Petracci

Alfonso Petracci 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).

  • Moulded shoe sole able to take in air from the inside of the shoe and push it out from the heel
    Patent number: 5655314
    Abstract: A molded sole takes air in from the inside of the shoe and expels it through the heel, due to the pumping action carried out by a cushion, able to elastically deform once the foot pressure is applied. The cushion is housed within a chamber on the bottom of the sole and communicates through a longitudinal channel blocked by a single acting valve, with a ring on the heel which communicates with the interior through a vent area.
    Type: Grant
    Filed: February 1, 1996
    Date of Patent: August 12, 1997
    Assignee: Petris - S.p.A.
    Inventor: Alfonso Petracci