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Grinding wheel

  • US 6,213,860 B1
  • Filed: 09/21/2000
  • Issued: 04/10/2001
  • Est. Priority Date: 02/04/1998
  • Status: Expired due to Term
First Claim
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1. A method of making a lightweight grinding wheel, the method comprising placing a ring of abrasive material in a mold, and positioning an annular wheel center in the mold spaced from the ring, and casting aluminum or aluminum alloy into the annular gap between the ring and the wheel center to bond the ring and wheel together and thereby form a wheel having a body with a density of less than 4 g/cc.

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