A graphite support leg for positioning an object, such as a pump, in a bath of molten metal. The leg is enclosed in a ceramic sleeve, and an inert material is disposed in a clearance between the leg and the sleeve to protect the leg from the heat of the molten metal. ...http://www.google.de/patents/US6168753?utm_source=gb-gplus-sharePatent US6168753 - Inert pump leg adapted for immersion in molten metal
