Patent ID: 6793596
Filing Date: 2004-09-21
Classification: F42B

Abstract:
An arrowhead comprising:a body having a first end, a mounting location, a second end, and a longitudinal axis extending between said first and second ends; an elongated blade having a first end and a second end, said first end of said blade being pivotably mounted to said mounting location of said body about an axis of rotation such that said blade is pivotably movable between first and second positions; said blade lying substantially parallel to said longitudinal axis of said body when in said first position with said second end adjacent said first end of said body, and said second end of said blade extending outward and on the side of said mounting location toward said second end of said body when said blade is in said second position; a bearing surface at said second end of said blade so as to be contacted by a target surface to pivot said blade from said first position to said second position when said bearing surface strikes a target; said blade having a cam portion formed thereon adjacent said axis of rotation; and a spring adjacent said axis of rotation of said blade and oriented to exert a force against said cam portion of said blade in the approximate direction of said axis of rotation; said cam portion of said blade being configured such that a biasing force tending to pivot said blade into said first position is exerted during a first minor portion of rotation of said blade between said first position and said second position.