Abstract:
An archery sighting device, comprising a spherical peep sight body in conjunction with a centrally located hour glass shaped aperture view port, which, substantially maintains its projected geometric integrity, throughout a range of varying draw angles.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of Invention 
         [0002]    This invention relates to a method and apparatus wherein an archery bowstring mounted peep sight is centrally located between separated bowstring fibers. 
         [0003]    2. Description of the Related Art 
         [0004]    Prior to the present invention, as forth set in the general terms above and more specifically below, it is known in the archery bowstring mounted peep sight art to employ a single aperture peep sight. 
       SUMMARY OF THE INVENTION 
       [0005]    Generally speaking, an embodiment of this invention fulfills these needs by providing an archery peep sight with a spherical sight body, in conjunction with a centrally located hour glass shaped aperture view port. 
         [0006]    The above and other features of the present invention, which will become more apparent as the description proceeds, are best understood by considering the following detailed description in conjunction with the accompanying drawings, wherein like characters represent like parts throughout the several views and in which: 
     
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0007]      FIG. 1  illustrates an isometric view of a peep sight apparatus fixed in place on a bowstring, according to one embodiment of the present invention. 
           [0008]      FIG. 2  illustrates an orthogonal side view of the peep sight apparatus, according to one embodiment of the present invention. 
           [0009]      FIG. 3  illustrates an orthogonal front view of the peep sight apparatus, according to one embodiment of the present invention. 
           [0010]      FIG. 4  illustrates a cross sectional side view of the peep sight apparatus, according to one embodiment of the present invention. 
           [0011]      FIG. 5  illustrates an isometric view of the peep sight apparatus, according to one embodiment of the present invention. 
           [0012]      FIG. 6  illustrates a cross sectional, orthogonal view of a peep sight apparatus mounted on a fully drawn bowstring. The apparatus is positioned normal to an archer&#39;s eye, according to one embodiment of the present invention. 
           [0013]      FIG. 7  illustrates a cross sectional, orthogonal view of a peep sight apparatus mounted on a fully drawn bowstring. The illustration represents a bow possessing a different draw angle than that of  FIG. 6 , according to one embodiment of the present invention. 
           [0014]      FIG. 8  illustrates a cross sectional orthogonal view of a peep sight apparatus mounted on a fully drawn bowstring. The illustration represents a bow possessing a different draw angle than that of  FIG. 6  and  FIG. 7 , according to one embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0015]    Traditionally, most common peep sights are of single piece design, with a single aperture port, and are mounted on the bowstring by means of separating the bow string fibers at the desired location. Most common prior art peep sights, are captured between separated bowstring fibers, thus fixing the device in place. Distinguishing itself from other prior art, the device of the present invention embodies four main features. 
         [0016]    First, a primary sighting device is centrally located and fixed between separated bowstring fibers. Second, a sight body wherein the surrounding perimeter of the apparatus is geometrically spherical by design. Third, an aperture opening derived from dual apposing conical bores which form an hour glass shaped aperture view port. Finally, the apparatus is secured in place by means of opposing bowstring receptacle channels. 
         [0017]    This design enables the sighting apparatus to maintain correct projected view of the peep sight to an archer, eliminating distortion of the sight geometry with respect to varying compound bow draw angles. 
         [0018]    With reference first to  FIG. 1 , there is illustrated an isometric view of a mounting convention as it relates a spherical peep sight apparatus  1 , mounted on a fully drawn bowstring. Apparatus  1  is mounted in place on bowstring  6 , by engaging opposing bowstring receptacle channels  3   c  and  3   d  ( FIG. 3 ), between separated bowstring fibers  6   e  and  6   f . Apparatus  1  is secured in place along bowstring axial centerline, by means of upper and lower serving wraps  8   a  and  8   b . Eye  7  and sighting vector  9  illustrate a user&#39;s line of sight through centrally located aperture view port  4 . Aperture view port  4  is comprised of primary conical bore  2   a , and secondary conical bore  2   b.    
         [0019]    With reference to  FIG. 2 , there is illustrated one orthogonal side view of apparatus  1  and bowstring receptacle channel  3   c.    
         [0020]    With reference to  FIG. 3 , there is illustrated one orthogonal front view of apparatus  1 , bowstring receptacle channel  3   c , and  3   d , primary conical bore  2   a , and centrally located aperture view port  4 . 
         [0021]    With reference to  FIG. 4 , there is illustrated one orthogonal, left side, cross section view of apparatus  1  and primary and secondary conical bores  2   a  and  2   b  converging and centered within spherical peep sight apparatus  1 . With reference to the  FIG. 4 , there is shown cross hatching delineating section boundary  5 , conical bore  2   a  and  2   b.    
         [0022]    With reference to  FIG. 5 , there is illustrated one isometric view of spherical peep sight apparatus  1  and primary and secondary conical bores  2   a  and  2   b  converging and centered within apparatus  1 . With reference to  FIG. 5 , there is shown centrally located aperture view port  4  through spherical peep sight apparatus  1 . 
         [0023]    With reference to  FIG. 6 , there is illustrated one orthogonal cross section view of a mounting convention as it relates to the spherical peep sight apparatus  1 , mounted on a fully drawn bowstring, as mentioned above in  FIG. 1 .  FIG. 6  represents one embodiment of a draw angle variation wherein apparatus  1  is in a neutral position with respect to eye  7  and bowstring  6  is centered between draw angle indicators  12   k  and  12   l . Projection lines  10   g  and  10   h  illustrate the true diameter of spherical peep sight apparatus  1 , as projected towards eye  7 . Projection lines  11   i  and  11   j  illustrate the true diameter of the aperture port, projected silhouette towards eye  7 . 
         [0024]    With reference to  FIG. 7 , there is illustrated one orthogonal cross section view of a mounting convention as it relates to the spherical peep sight apparatus  1 , mounted on a fully drawn bowstring, as mentioned above in  FIG. 1 .  FIG. 7  represents another embodiment of a draw angle variation, wherein apparatus  1  is rotated off neutral position with respect to eye  7 , and bowstring  6  is positioned at draw angle indicator  12   k . Projection lines  10   g  and  10   h  illustrate the diameter of spherical peep sight apparatus  1 , as projected towards eye  7 . As illustrated in  FIG. 7 , projection lines  10   g  and  10   h  provide a true projection of apparatus  1  presented to eye  7 , which are undistinguishable geometrically from  FIG. 6  projection lines  10   g  and  10   h . Projection lines  11   i  and  11   j  illustrate the diameter of the aperture port, projected silhouette towards eye  7 . As illustrated in  FIG. 7 , projection lines  11   i  and  11   j  illustrate minimal geometric distortion of aperture  4  as projected towards eye  7 , which are nearly undistinguishable geometrically from  FIG. 6  projection lines  11   g  and  11   h.    
         [0025]    With reference to  FIG. 8 , there is illustrated one orthogonal cross section view of a mounting convention as it relates to the spherical peep sight apparatus  1 , mounted on a fully drawn bowstring, as mentioned above in  FIG. 1 .  FIG. 7  represents another embodiment of a draw angle variation wherein apparatus  1  is rotated off neutral position with respect to eye  7  and bowstring  6  is positioned at draw angle indicator  12   l . Projection lines  10   g  and  10   h  illustrate the diameter of spherical peep sight apparatus  1 , as projected towards eye  7 . As illustrated in  FIG. 8 , projection lines  10   g  and  10   h  provide a true projection of apparatus  1  presented to eye  7 , which are undistinguishable geometrically from  FIG. 6  projection lines  10   g  and  10   h . Projection lines  11   i  and  11   j  illustrate the diameter of the aperture port, projected silhouette towards eye  7 . As illustrated in  FIG. 8 , projection lines  11   i  and  11   j  illustrate minimal geometric distortion of aperture  4  as projected towards eye  7 , which are nearly undistinguishable geometrically from  FIG. 6  projection lines  11   g  and  11   h.