CONTROL PISTON VALVE HELD BY TWO MEMBRANE SPRINGS FOR ADJUSTING THE INFLATION PRESSURE OF A PNEUMATIC TIRE OF A MOTOR VEHICLE DURING OPERATION

摘要

P This valve is part of a device for adjusting the tire pressure of a vehicle and is mounted in the rim of a wheel. The invention makes this valve insensitive to the large centrifugal forces produced at this location. It comprises a seat valve 22, the seat 19 of which is integral with the body 10 of the adjustment valve and the valve 21 of which is fixed to a control piston 23 having two opposite faces 29, 30 on which the pressure acts. The piston 23 is held by two membrane springs 38, 39 clamped by their outer edges in the body 10 of the adjustment valve. This arrangement practically eliminates any friction during the movement of the piston 23, which makes the valve insensitive to centrifugal forces. /P