Broadhead with deployment mechanism

Abstract

A broadhead with deployment mechanism is disclosed. An example broadhead includes a core, at least one actuators rotatably attached to the core. The example broadhead also includes at least one cutting blades corresponding to each of the three actuators, the three cutting blades rotatably attached to the core. In an example, the broadhead includes three actuators and three cutting blades. At least one magnetic field is provided (e.g., a magnet) near the core to hold the actuator(s) and corresponding cutting blade(s) in a predetermined position for a first stage with the actuator(s) and cutting blade(s) in a closed position, another predetermined position for a second stage upon initial contact with a target, and enabling full deployment of the cutting blade(s) in a third stage.

1 . A broadhead with deployment mechanism, comprising:
 a core,   at least one actuator rotatably attached to the core; and   at least one cutting blade rotatably attached to the core.   
     
     
         2 . The broadhead of  claim 1 , further comprising at least one post on the core, the at least one actuator and the at least one cutting blade movably fitted over the post. 
     
     
         3 . The broadhead of  claim 2 , wherein the at least one actuator is attached on the post closest to the core and the at least one cutting blade is attached over the at least one actuator. 
     
     
         4 . The broadhead of  claim 2 , further comprising a fastener connected to the at least one post. 
     
     
         5 . The broadhead of  claim 1 , further comprising a generally U-shaped recess formed in the core, the generally U-shaped recess configured to receive the at least one actuator in a predetermined position and enable motion of the at least one actuator through a predetermined path. The broadhead of  claim 1 , further comprising an opening formed in the at least one actuator, the opening providing targeted weight reduction to prevent deployment upon firing. 
     
     
         7 . The broadhead of  claim 1 , further comprising a slot formed in the at least one cutting blade. 
     
     
         8 . The broadhead of  claim 7 , further comprising a mechanical stop on the at least one actuator, the mechanical stop received in the slot formed in the at least one cutting blade to limit travel of the at least one cutting blade and to hold the at least one cutting blade in a predetermined position. 
     
     
         9 . The broadhead of  claim 1 , further comprising a magnet of the core to catch the at least one actuator and hold the at least one actuator in a predetermined position until impact with a target. 
     
     
         10 . The broadhead of  claim 9 , wherein the magnet is provided as part of the core.  11 , The broadhead of  claim 9 , wherein the magnet is provided in a pocket formed in the core. 
     
     
         12 . The broadhead of  claim 1 , wherein the core is a milled aluminum triangular based polyhedron having a height that is greater than a width of the polyhedron.  13 , The broadhead of  claim 1 , wherein a long edge and short leading edge of the at least one cutting blade is sharpened. 
     
     
         14 . The broadhead of  claim 1 , further comprising a fastener to secure the core to an arrow shaft. 
     
     
         15 . The broadhead of  claim 1 , further comprising a catch on the core, the at least one cutting blade held against the catch by the mechanical stop on the at least one actuator being pressed against the slot. 
     
     
         16 . A broadhead with deployment mechanism, comprising:
 a core,   three actuators rotatably attached to the core;   three cutting blades corresponding to each of the three actuators, the three cutting blades rotatably attached to the core; and   at least one magnetic field near the core to hold the three actuators and three corresponding cutting blades in a predetermined position for a first stage with the three actuators and three cutting blades in a closed position, another predetermined position for a second stage upon initial contact with a target, and enabling full deployment of the three cutting blades in a third stage.   
     
     
         17 . A method comprising:
 providing a core,   providing an actuator and a cutting blade rotatably attached to the core;   holding the actuator and cutting blade in a predetermined position prior to launch and controllably releasing the cutting blade upon impact with a target.   
     
     
         18 . The method of  claim 17  further comprising holding the actuator and cutting blade in a first stage with the actuator and cutting blade in a closed position. 
     
     
         19 . The method of  claim 17  The method of  claim 17  further comprising releasing the actuator in a second stage on contact with a target. 
     
     
         20 . The method of  claim 17  further comprising full deploying the cutting blade in a third stage.