Patent ID: 8894519

Claim:
An arrow broadhead adapted for attachment to an end of an arrow shaft, the broadhead comprising: a main body having an axial bore adjacent a forward end of the main body, a first counterbore adjacent the axial bore, and a second counterbore adjacent the first counterbore; a first cam follower slidably received within said first counterbore; a second cam follower slidably received within said second counterbore; a shaft slidably received within the axial bore, the shaft having a first end attached to the first cam follower and a second end attached to a pointed tip, the pointed tip disposed exteriorly of the main body at the forward end of the main body; a plurality of cutting blades pivotally attached to said main body, each cutting blade having an outward facing cutting edge and an inward facing cam edge, each cutting blade pivotal at the forward end between an open position and a closed position; said cam edge defined by a first angled cam, a second angled cam, and a sear notch; each cutting blade extending through a longitudinal slot in the main body, wherein said first angled cam extends into said first counterbore and said second angled cam extends into said second counterbore when the cutting blades are in the closed position; said first angled cam configured to pivot the cutting blade to an intermediate position between the closed position and the open position responsive to rearward movement of the first cam follower; said second angled cam configured to pivot the cutting blade to the open position responsive to forward sliding movement of the second cam follower; a spring having a first end exerting a force against the second cam follower; when the cutting blades are in the closed position, said second cam follower exerting a force against the sear notch to secure the cutting blades in the closed position; and when the cutting blades are in the intermediate position, said second cam follower exerting a force against the second cam surface to urge the cutting blades to the open position.