| 摘要 |
A pressure equalising device equalises and controls the pressures in at least two pressurised pneumatic tyres of a multiple wheel assembly of a road vehicle. The device comprises a valve body (3) defining an equalising chamber (9) and having a socket part (4) mountable directly on the conventional air inlet connection of one tyre and having a tubular connection (13) for engagement with the air inlet connection of the second of the two tyres. The two tyre inlet connections (4 and 13) communicate with the equalising chamber (9) on opposite sides of a valve seat (10a) for a valve member (14) urged towards the seat (10a) by a spring (19). The two tyre pressures are equalised when the valve is open to maintain equalised pressure between the tyres under varying load conditions. The valve however closes the chamber sealing off the communication between the tyre inlet connections, in the event of failure of one tyre, to prevent pressure loss from the other tyre. |
