Patents Assigned to Petris - S.p.A.
  • 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