Patent ID: 9744819
Date: 2017-08-29
CPC Classifications: B60C,F16K,Y10T

Claim:
1. A clamp-in metal valve system configured for inflating tyres associable with a tyre pressure monitoring system transducer, comprising: a stem terminating in a head configured to associate with a rim of a wheel; a thread provided on the stem; a locking nut adapted to screw onto the thread; a seat provided in the stem; and an annular element at least partially axially fitted in the seat, the annular element being configured to irreversibly yield when a preset tightening torque is reached for said locking nut, wherein a portion of the annular element that remains visible on the stem of the valve after a breakage of the annular element is adapted to act as an indicator, on an outside of the tyre, of a presence of the transducer on an inside of the tyre.