A pumping assembly for use with a pneumatic tire (1, 2) mounted on a tire rim (14) is disclosed to keep the pneumatic tire from becoming underinflated. The pumping assembly (200) comprise (i) at least one pump (400, 400') mounted in a housing (201) having a reservoir (219), the housing being attached to the tire rim and the pump (400, 400') having a first chamber (420) and a second chamber (430), wherein the outlet of the first chamber (420) is fed into the inlet of the second chamber (430); or (ii) a first and second pump (400, 400') mounted in a reservoir (219), the reservoir being attached to the tire rim and the first pump (400) having a first chamber (420) and the second pump (400') having a second chamber (430); and a cam (300) for producing a pumping action and being connected to a gravity mass (350) for maintaining the cam (300) in a fixed position. The at least one pump (400, 400') or the first and the second pump have an actuating arm (412) for engaging the cam (300) and producing the pumping action as the tire (1, 2) rotates. Also, a tire air maintenance system is disclosed comprising a pneumatic tire (1, 2) mounted on a tire rim (14), preferably a dual tire assembly, and such a pumping assembly (200).


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    Title :

    PUMP ASSEMBLY FOR USE WITH A PNEUMATIC TIRE AND AIR MAINTENANCE TIRE SYSTEM


    Additional title:

    PUMPENANORDNUNG ZUR VERWENDUNG MIT EINEM LUFTREIFEN UND LUFTWARTUNGSREIFENSYSTEM
    ENSEMBLE DE POMPE DESTINÉ À ÊTRE UTILISÉ AVEC UN PNEUMATIQUE ET SYSTÈME PNEUMATIQUE DE MAINTENANCE D'AIR


    Contributors:

    Publication date :

    2019-08-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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