Archery broadhead

Abstract

The disclosure of the present invention relates to an archery broadhead or more specifically to an archery broadhead having a plurality of replaceable blades mounted against a plurality of flat support surfaces formed distally from the central axis of the broadhead ferrule. The blades having a cutting edge extending away from the ferrule and an inside surface mounting portion configured to mate with the outside surface of the ferrule and either mate flush against, or extended through, an adjacent one of the plurality of replaceable blades. The back surface portion of the blades configured to form a structural cage around the ferrule.

1 . An archery broadhead comprising;
 a ferrule having,
 a point,
 the point having a point end and base,
 a blade retaining lip formed in the base of the point, 
 
 
 a shaft having a plurality of flat blade support surfaces arranged symmetrically and concurrently around a central longitudinal axis of the ferrule, 
 a threaded ferrule attachment base, 
   a blade retaining bushing,   a plurality of primary blades configured to be retained between the blade retaining lip and the blade retaining bushing, and,   each of the primary blades having an inside surface secured flush against one of the plurality of blade support surfaces on the ferrule shaft.   
     
     
         2 . The archery broadhead of  claim 1  wherein the plurality of blade support surfaces is three. 
     
     
         3 . The archery broadhead of  claim 1  wherein the plurality of blade support surfaces is four. 
     
     
         4 . The archery broadhead of  claim 1  wherein the plurality of blade support surfaces is greater than four. 
     
     
         5 . The archery broadhead of  claim 1  wherein the blade retaining bushing includes a plurality of blade retention slots. 
     
     
         6 . An archery broadhead comprising;
 a ferrule having,
 a point,
 the point having a point end and base,
 a blade retaining lip formed in the base of the point, 
 
 
 a shaft having a plurality of flat blade support surfaces arranged symmetrically and concurrently around a central longitudinal axis of the ferrule, 
 a threaded ferrule attachment base, 
   a blade retaining bushing,
 a plurality of planar primary blades configured to be retained between the blade retaining lip and the blade retaining bushing, 
 the plurality of primary blades formed substantially as a right triangle having an inside surface, outside surface, cutting edge, a base edge and a vertical spine edge, 
 the plurality of primary blades including a window cut through the planar surface, and, 
   each of the primary blades having an inside surface secured flush against one of the plurality of blade support surfaces on the ferrule shaft and the vertical spine edge against the outside surface of an adjacent one of the plurality of primary blades.   
     
     
         7 . The archery broadhead of  claim 6  wherein the plurality of blade support surfaces is three. 
     
     
         8 . The archery broadhead of  claim 6  wherein the plurality of blade support surfaces is four. 
     
     
         9 . The archery broadhead of  claim 6  wherein the plurality of blade support surfaces is greater than four. 
     
     
         10 . The archery broadhead of  claim 6  wherein the blade retaining bushing includes a plurality of blade retention slots. 
     
     
         11 . The archery broadhead of  claim 6  wherein the primary blades include a secondary bleeder blade extending away from the vertical spine edge in the same plane as the primary blade, and,
 the secondary bleeder blade configured to extend through the window of the adjacent one of the plurality of primary blades. 
 
     
     
         12 . An archery broadhead comprising;
 a ferrule having,
 a point,
 the point having a point end and base,
 a blade retaining lip formed in the base of the point, 
 
 
 a shaft having a plurality of flat blade support surfaces arranged symmetrically and concurrently around a central longitudinal axis of the ferrule, 
 a threaded ferrule attachment base, 
   a blade retaining bushing,
 a plurality of planar primary blades configured to be retained between the blade retaining lip and the blade retaining bushing, 
 the plurality of primary blades formed substantially as a right triangle having an inside surface, outside surface, cutting edge, a base edge and a vertical spine edge, 
 the primary blades include secondary bleeder blade extending away from the vertical spine edge at an acute angle to the primary blades, 
 the plurality of primary blades including a window cut through the planar surface, and, 
   each of the primary blades having an inside surface secured flush against one of the plurality of blade support surfaces on the ferrule shaft,   each of the secondary bleeder blades having an inside surface secured flush against and adjacent one of the plurality of blade support surfaces on the ferrule shaft, and,   each of the secondary bleeder blades extending through the window of the adjacent one of the plurality of primary blades.   
     
     
         13 . The archery broadhead of  claim 12  wherein the plurality of blade support surfaces is four. 
     
     
         14 . The archery broadhead of  claim 12  wherein the plurality of blade support surfaces is six. 
     
     
         15 . The archery broadhead of  claim 12  wherein the plurality of blade support surfaces is eight. 
     
     
         16 . An archery broadhead ferrule comprising;
 a point,   a shaft having a plurality of flat blade support surfaces arranged symmetrically and concurrently around a central longitudinal axis of the ferrule, and,   a threaded ferrule attachment base.   
     
     
         17 . The archery broadhead of  claim 16  wherein the plurality of blade support surfaces is three. 
     
     
         18 . The archery broadhead of  claim 16  wherein the plurality of blade support surfaces is four. 
     
     
         19 . The archery broadhead of  claim 16  wherein the plurality of blade support surfaces is greater than four.