Patent ID: 8904775

Claim:
A hydrodynamic machine fitted with a rotating primary wheel and a rotating or stationary secondary wheel, wherein the drive power or torque is transmitted hydrodynamically from the primary wheel to the secondary wheel by means of a working medium, comprising a closure with thermal safety function inserted in a housing of the hydrodynamic machine that contains a working medium, wherein: the closure includes a closure body for at least one of screwing, inserting into and mounting on the housing; the closure body includes a passage, comprising a closure core, connected to the closure body by means of a melting element that can be melted at a predefined temperature, the closure core directly connected to at least one of the closure body and an intermediate element introduced in a seal-forming fashion in the closure body in such a way that the passage is sealed off to prevent the working medium from passing through; the closure core includes at least one of a blind bore and a blind hole, that is open to the working space, so that the working medium can flow into the closure core.