Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jens Bouchard0
Sylvain Tremblay0
Michael Bouchard0
Date of Patent
June 12, 2018
Patent Application Number
15114728
Date Filed
March 21, 2016
Patent Citations Received
Patent Primary Examiner
Patent abstract
A control pin for controlling the flow of molten metal through a down spout in a casting process is provided. The control pin comprises a body having an elongated shape, a lower portion insertable in the down spout, and a terminal end, opposite the lower portion. The body includes a central core, preferably a hollow tube or a rod of alumina or mullite; a heating element disposed around the central core, and an intermediate layer surrounding the central core and encasing the heating element, the intermediate layer being made of a solidified ceramic putty. Finally, an outer shell, preferably made of woven fiber reinforcing fabric in a matrix of ceramic, surrounds the intermediate layer.
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