Antitheft device for the thermostat head of radiator valves

摘要

The invention relates to an antitheft device for a thermostat head which is mounted on a radiator valve by means of a sleeve nut. In order to prevent loosening of the sleeve nut, the latter is arranged in the interior of a ring in such a way that the latter can be rotated with respect to the sleeve nut but cannot be withdrawn axially. In order to transmit the torque from the ring to the sleeve nut, a pin producing the coupling is inserted into both. Arranged between the sleeve nut and the ring embracing the sleeve nut is an annular disc having a bore which is aligned with the receiving bores for the coupling pin in the sleeve nut and in the ring. After withdrawal of the coupling pin, the ring is rotated with respect to the annular disc so that the latter forms a lock for the renewed insertion of a coupling pin.