Fluted gun barrel

  • US 6,324,780 B1
  • Filed: 07/09/1999
  • Issued: 12/04/2001
  • Est. Priority Date: 07/09/1999
  • Status: Expired due to Term
First Claim
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1. A gun barrel, comprising:

  • an open-ended hollow body extending along a longitudinal axis, said body having a first end, a second end, an intermediate portion positioned between said first end and said second end, an inner surface and an outer surface, said inner surface defining a gun barrel bore and a plurality of internal spiral grooves and said outer surface defining a plurality of external spiral grooves, wherein the internal spiral grooves are not in fluid communication with the external spiral grooves, and wherein a cross section taken through the intermediate portion, which is transverse to the longitudinal axis, includes an external spiral groove and an internal spiral groove radially spaced from the longitudinal axis, and wherein the plurality of internal grooves and the plurality of external grooves when viewed from said first end progress in the same direction of rotation.

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