Patent ID: 9309891
Filing Date: 2016-04-12
CPC Classification: F04D,F16D,F16H

Claim Text:
1. A hydrodynamic coupling, comprising: a pump wheel and a turbine wheel, which form together a toroidal working chamber which can be filled with a working medium; a closed working medium circuit, which extends from the working chamber via a working chamber outlet, an external circuit branch and a working chamber inlet back into the working chamber; a storage chamber positioned outside the working chamber and outside the closed working medium circuit, for receiving a quantity of the working medium evacuated from the working chamber for reducing the filling level of the working chamber, which is connected via a connection for conveying the quantity of the working medium outside the working chamber to the closed working medium circuit; wherein the storage chamber is designed as a confined space which is pressure-tight to the surrounding atmosphere, having a control pressure port so as to forcibly displace the working medium; wherein the storage chamber is designed as an annular chamber, which extends inside the hydrodynamic coupling radially outside the working chamber around it.