A valve cap (10) comprising a unitary body (18), and a sealing ring (19) nested within the body (18), the body comprising a round tubular wall portion (20) defining a central passage (15) with an opening at the bottom end of the body and a roof portion (21) which closes off the passage (15) at the top end of the body (18), the sealing ring (19) internally contacting the roof portion (21) thereabove, the body (18) having an external portion or surface (27) for gripping, internally the body (18) having a threaded section (23) comprising a spiraling internal thread (25) and threadless section (24) beneath the threaded section (23) comprising a smooth inner surface (26) extending down from the threaded section (23) to the base of the body (18), the internal thread (25) being of standard dimension 5/16 UNEF and having a pitch of around 0.794 mm, the thread (25) winding internally between one and four revolutions, the distance, 'd', between the bottom of the internal thread (25) and the bottom of the seal (19) being between 0.5 and 3.0 mm, the arrangement being such that the cap (10) is screwable onto a valve (11) in between one and three full rotations before it is halted by abutment with the sealing ring (19), resulting in a sealed engagement. krIn at


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    Title :

    IMPROVEMENTS IN OR RELATING TO CAPS OR PRODUCTS WITH CAPS


    Contributors:
    WAY JUSTIN (author)

    Publication date :

    2018-04-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / F16K VALVES , Ventile



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