Patent ID: 9061556
Filing Date: 2015-06-23
Classification: B60C,Y10T

Abstract:
1. A pneumatic tire comprising: a tire cavity, first and second sidewalls extending respectively from first and second tire bead regions to a tire tread region; an elongate, substantially annular air passageway enclosed within a bending region of the tire and extending substantially in a circumferential direction of the tire, wherein upon rolling of the tire air is pressed through the air passageway; and a valve assembly in air flow communication with the tire cavity, the annular air passageway and an exterior of the tire, the valve assembly comprising: a first chamber having a first opening in air flow communication with the air inlet and a second opening in air flow communication with a first end of the annular passageway and a third opening in air flow communication with a second end of the annular passageway; and a piston element adapted and arranged to move between a first state blocking air flow through the second opening and allowing air flow from the first opening through the third opening and a second state blocking air flow through the third opening and allowing air flow from the first opening through the second opening; and