Patent ID: 6428434
Filing Date: 2002-08-06
Classification: F42B

Abstract:
A blade-opening arrowhead comprising:(a) an arrowhead body having a central longitudinal axis; (b) a pivotal cutting blade rotatably mounted to said arrowhead body such that when the arrowhead is penetrating an object said blade abuts against a blade-stop surface so that a furthest cutting section of said blade from said central longitudinal axis is disposed a first shortest distance from said central longitudinal axis, said arrowhead being enabled to have said furthest cutting section of said blade disposed at a second different shortest distance from said central longitudinal axis when said blade is rotatably mounted to said arrowhead body and is abutting against a blade-stop surface when the arrowhead is penetrating an object; and (c) a deflectable element disposed at least in part rearward of said pivotal blade, said deflectable element producing an urging force in at least a direction substantially parallel to said central longitudinal axis so as to aid in maintaining said pivotal blade selectively in a closed in-flight configuration.