B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
B28B 1/30 (2006.01)
Patent
CA 2050722
- 1 - ABSTRACT OF THE INVENTION A method of making a high temperature monolithic conduit and the article made by the method. A mandrel or sacrificial member is used to define the interior passageway within the conduit. In one embodiment, the mandrel or sacrificial member is coated with a layer of predetermined thickness to form the conduit walls. In another embodiment, the mandrel or sacrificial member is positioned within a larger form, and the space between the interior surface of the larger form and the mandrel or sacrificial member is packed with mix of predetermined refractory mate- rial to form the walls of the conduit. After the conduit walls are formed, they are cured. In the first embodiment, the sacrificial member is sacrificed or the mandrel is removed. In the sec- ond embodiment, the larger form and mandrel or sacrificial form are removed to expose the com- pleted conduit.
Dresser Industries Inc.
Goudreau Gage Dubuc
Meloy Walter D.
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