Abstract:
Apparatus for positioning the blade retaining pin of a broadhead arrow tip employing retracting blades retained by a pin, the apparatus employing various screws adapted to completely or partially remove the pin, to press the pin back into place flush with the tip as well as to install a new pin.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    The instant invention relates generally to archery products and more particularly to broadhead arrow tips employing retracting blades retained by a pin. Such broadhead arrow tips have movable blades that are stowed during flight and deploy upon impact. The blades are stowed during flight to provide reduced aerodynamic drag during flight. Upon impact the blades are deployed to an extended position that enlarges the cutting profile of the arrow tip. The blades of such broadhead arrow tips can become dull and/or chipped after use and can be replaced by driving the pin out of the tip with a pin punch, removing the old blades from the tip, inserting the new blades into position in the tip and then driving the pin back into place. The step of driving the pin back into place is usually accomplished by holding the pin in place with needle nose plyers while driving the pin into the tip with a hammer. The step of driving the pin back into place requires care to properly align the pin with the tip to prevent damage to the pin and/or the tip especially since the tip has a cylindrical shape which tends to roll as the pin is driven back into place. It would be an advance in the art if a device where discovered that better facilitated the step of driving such a pin back into place. 
       SUMMARY OF THE INVENTION 
       [0002]    The instant invention is an important advance in the art of positioning the blade retaining pin of a broadhead arrow tip employing retracting blades retained by a pin. With regard to the preferred embodiment of the instant invention, the apparatus comprises a body, the body comprising a first bore therethrough, the first bore having a longitudinal axis, the body having a second bore therethrough, the second bore having a longitudinal axis, the longitudinal axis of the first and second bores intersecting at a right angle. The first bore is threaded near one end, the second bore is threaded. The body comprises a slot aligned with and intersecting with the longitudinal axis of the first bore. The apparatus further comprises a first screw adapted to be threaded into the threaded portion of the first bore. The body further comprises a third threaded bore thereinto and a fourth threaded bore thereinto. The thread diameter and pitch of the first, third and fourth threaded bores are the same. The apparatus also comprises a second screw, a third screw, a fourth screw and a fifth screw, the thread diameter and pitch of the second, third, fourth and fifth screws being the same as thread diameter and pitch of the first, third and fourth bores. The distal end of the second screw being flat, the distal end of the third screw comprising a bore thereinto along the longitudinal axis of the third screw, the distal end of the fourth screw comprising a pin shaped projection therefrom, the longitudinal axis of the pin shaped projection from the fourth screw being coincident with the longitudinal axis of the fourth screw, the length of the pin shaped projection from the fourth screw being less than the diameter of the first bore, the distal end of the fifth screw comprising a pin shaped projection therefrom, the longitudinal axis of the pin shaped projection from the fifth screw being coincident with the longitudinal axis of the fifth screw, the length of the pin shaped projection from the fifth screw being greater than the diameter of the first bore. When a broadhead arrow tip employing retracting blades retained by a pin is positioned in the first bore and the pin aligned with the longitudinal axis of the second bore by adjusting the first screw in the threaded portion of the first bore to bear against the distal end of the arrow tip, the blades of the arrow tip can be positioned in the slot. When it is desired to remove the pin from the tip, the fifth screw is screwed into the second bore so that the pin shaped projection from the fifth screw presses the pin from the tip. When it is desired to only press the pin from the tip sufficiently to remove the blades from the tip for replacement with new blades, the fourth screw is screwed into the second bore so that the pin shaped projection from the fourth screw presses the pin sufficiently to remove the blades from the tip for replacement with new blades and then the second screw is screwed into the first bore to press the pin back into place. Alternatively, when it is desired to press a new pin into the tip, a new pin can be positioned in the bore of the third screw and the third screw screwed into the first bore to press the pin into the tip. The third and fourth threaded bores are used for screw storage. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0003]      FIG. 1  is a side view of a broadhead arrow tip employing retracting blades retained by a pin showing the blades in the extended position; and 
           [0004]      FIG. 2  is an exploded view of a preferred apparatus of the instant invention showing the body of the apparatus cross-sectioned to reveal the interior cavities of the body. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0005]    Referring now to  FIG. 1 , therein is shown a typical broadhead arrow tip  18  employing retracting blades  20  and  21  retained by pin  22 . The blades  20  and  21  have sharpened edges  20   a  and  21   a . The pin  22  is a press fit in a bore that passes through the tip body  19 . The blades  20  and  21  have openings  20   b  and  21   b . The blades  20  and  21  overlap each other within the tip body  19  and pivot to a retracted or extended position about the pin  22  which pin passes through the openings  20   b  and  21   b  in the blades  20  and  21 . The distal end  19   a  of the arrow tip  18  is pointed while the other end of the arrow tip  18  is threaded for attachment to the main shaft of an arrow or crossbow bolt. 
         [0006]    Referring now to  FIG. 2 , therein is shown an exploded view of a preferred apparatus of the instant invention showing the body  6  of the apparatus cross-sectioned to reveal the interior cavities of the body. The body  6  comprises a first bore therethrough, the first bore having a longitudinal axis  5 , the body  6  having a second bore  13  therethrough, the second bore  13  having a longitudinal axis, the longitudinal axis of the first and second bores intersecting at a right angle within the body  6 . The second bore  13  is threaded near one end while the first bore is threaded with threaded portions  7  and  8 . The body  6  comprises a slot  12  aligned with and intersecting with the longitudinal axis of the second bore  13 . The apparatus further comprises a first screw  11  adapted to be threaded into the threaded portion of the second bore  13 . The body  6  further comprises a third threaded bore  9  thereinto and a fourth threaded bore  10  thereinto. The thread diameter and pitch of the first, third and fourth threaded bores are the same. The apparatus also comprises a second screw  14 , a third screw  15 , a fourth screw  17  and a fifth screw  16 . The thread diameter and pitch of the second, third, fourth and fifth screws being the same as thread diameter and pitch of the first, third and fourth bores. The distal end  14   a  of the second screw  14  is flat. The distal end of the third screw  15  has a bore  15   a  thereinto along the longitudinal axis of the third screw  15 . The distal end of the fourth screw  17  has a pin shaped projection  17   a  therefrom, the longitudinal axis of the pin shaped projection  17   a  from the fourth screw  17  being coincident with the longitudinal axis of the fourth screw  17 , the length of the pin shaped projection  17   a  from the fourth screw  17  being less than the diameter of the second bore  13 . The distal end of the fifth screw  16  comprises a pin shaped projection  16   a  therefrom, the longitudinal axis of the pin shaped projection  16   a  from the fifth screw  16  being coincident with the longitudinal axis of the fifth screw  16 , the length of the pin shaped projection  16   a  from the fifth screw  16  being greater than the diameter of the second bore  13 . 
         [0007]    Referring still to  FIG. 2 , when a broadhead arrow tip employing retracting blades retained by a pin is positioned in the second bore  13  and the pin thereof is aligned with the longitudinal axis  5  of the first bore by adjusting the first screw  11  in the threaded portion of the second bore  13  to bear against the distal end of the arrow tip, the blades of the arrow tip can be positioned in the slot. When it is desired to remove the pin from the tip, the fifth screw  16  is screwed into the first bore from either side so that the pin shaped projection  16   a  from the fifth screw  16  presses the pin from the tip. When it is desired to only press the pin from the tip sufficiently to remove the blades from the tip for replacement with new blades, the fourth screw  17  is screwed into either side the second bore so that the pin shaped projection  17   a  from the fourth screw  17  presses the pin sufficiently to remove the blades from the tip for replacement with new blades after the screw  17  is backed out of the first bore so that the second screw  14  can then be screwed into the first bore to press the pin back into place flush with the body of the tip. Alternatively, when it is desired to press a new pin into the tip, a new pin can be positioned in the bore  15   a  of the third screw  15  and the third screw  15  can be screwed into the first bore to press the pin into the tip. The third and fourth threaded bores  9  and  10  are used for screw storage. 
         [0008]    The preferred material of construction for the body is aluminum. The screws are preferably made of steel. It will be understood that other metals, polymers, composites or the like can be the material of construction for the body and/or the screws. The screws of the instant invention are shown in  FIG. 2  as Allen head screws but such is not critical in the instant invention. For example, the screws of the instant invention can have ball ends for improved turning of the screws of the instant invention when turned by hand. 
       CONCLUSION 
       [0009]    While the instant invention has been described above and claimed below according to its preferred embodiment, it can be modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the instant invention using the general principles disclosed herein. Further, the instant application is intended to cover such departures from the present disclosure as come within the known or customary practice in the art to which this invention pertains.