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Dynamically balanced pump impeller

  • US 5,597,289 A
  • Filed: 03/07/1995
  • Issued: 01/28/1997
  • Est. Priority Date: 03/07/1995
  • Status: Expired due to Term
First Claim
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1. In a non-metallic pump for pumping molten metal including a shaft, a motor at one end of the shaft, an impeller at the other end of the shaft, and a base having a chamber in which the impeller is rotatable, the improvement comprising a dynamically balanced impeller made of a non-metallic, heat resistant material, comprising a circular base, a substantially cylindrical center hub portion located on the base, and five vanes extending from the base and outwardly from the hub portion, wherein said vanes are equally spaced around the periphery of the hub portion.

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