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Aerodynamic air gun projectile

  • US 7,222,573 B2
  • Filed: 03/29/2006
  • Issued: 05/29/2007
  • Est. Priority Date: 04/01/2005
  • Status: Expired due to Fees
First Claim
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1. In a projectile for an air arm molded as a body of revolution about a longitudinal axis comprising a head portion dimensioned for free sliding in the bore of an air arm and a skirt portion of frusto-conical form of which the rearward end is dimensioned to be in interference fit with said bore and the forward end is joined with the head portion in a reduced diameter waist, the frustum being shell-walled and having a central recess opening to the rear and extending forwardly into the head portion, an improvement wherein said projectile has an external surface form characterized by a parabolic head which smoothly transitions axially into a hyperbolic skirt,said projectile further comprising one or more vanes formed substantially symmetrically on the outer surface of said head portion, each vane extending axially in a helix configuration with a characteristic pitch which varies along the axial extent thereof.

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