US Patent 7232390 Lockable rotatable arrowhead

A rotatable arrowhead has a blade cartridge that can either rotate with respect to a carrier, that can be attached to an arrow shaft, or be fixed from such rotation. The carrier extends within a throughbore of the blade cartridge. When the blade cartridge is fitted with its throughbore surrounding a cartridge-receiving portion of the carrier, a retention member can be retainably engaged in a bore of the carrier to rotatably contain the blade cartridge between a front conical guide surface and a rear conical guide surface. A removable tip can be contained in the throughbore of the blade cartridge at a forward end of the arrowhead.