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Pump with porus ceramic tube

  • US 4,091,970 A
  • Filed: 05/11/1977
  • Issued: 05/30/1978
  • Est. Priority Date: 05/20/1976
  • Status: Expired due to Term
First Claim
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1. In a pump for use in a hot chamber type die casting machine of the type wherein the cylinder of the pump is immersed in molten metal and the molten metal in the cylinder is injected into a metal mould by a plunger operating in the cylinder through a main body constituting a goose neck shaped passage, the improvment which comprises a ceramic tube which is porous to molten metal which is cast in said main body of said pump and constitutes said goose neck shaped passage.

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