Patent ID: 8496550

Claim:
A target impact operative arrowhead mountable at an end of a shaft of an arrow comprising: an arrowhead body having blades pivotably mounted thereon with at least a portion of said blades movable into and out of slots in said body, at least one of said slots and said blades configured for frictionally resisting movement of said blades to hold said blades in said slots when said arrowhead is armed for firing and releasing said blades from said slots upon target impact, each of said blades having an actuation contact surface along an edge thereof; an actuator axially slidably receivable at said arrowhead body and having a blade contacting end; a spring ring; and one of said arrowhead body and said actuator having an annular retention seat defined thereat for mounting and retention of said spring ring therein and the other of said arrowhead body and said actuator having an annular guide groove with an axial width for receipt and slidable movement of said spring ring therealong while retaining said arrowhead body and said actuator assembly, said guide groove located so that, upon target impact, said blade contacting end of said actuator comes into contact with said actuation contact surfaces of said blades due to relative sliding movement of said arrowhead body and said actuator thereby releasing said blades from said slots in said body and pivoting said blades on said body into position for target penetration, said guide groove axially tapered along said axial width between an armed end having a maximum depth and a full ring compression end having zero depth thus providing frictional axial sliding contact of said ring along said width of said guide groove upon target impact.