Double bow system

Abstract

A bow includes a string; a frame for resting a projectile, with a first wing and a second wing and a middle portion in between; a first limb attached on an end of the first wing at a distance, the first limb having a first free end and a second free end with first and second placing means for positioning the string; a second limb attached on an end of the second wing, the second limb having a first free end and a second free end with first and second placing means for positioning the string; a first deflecting means for pulling the string from the first placing means and the second placing means of the first wing, and a second deflecting means on the first wing between the middle portion and the first limb; same for the second wing. The string crosses a path of the projectile only once.

What is claimed is: 
     
         1 . A bow comprising:
 a string;   a frame for resting and directing a projectile, wherein the projectile is fired substantially perpendicular to the frame when the string is released, the frame having a first wing and a second wing and a middle portion between the first and second wings;   a first limb attached on an end of the first wing at a distance from a middle portion of the frame, the first limb having a first free end and a second free end with installed thereon respectively a first placing means for positioning the string and a second placing means for positioning the string;   a second limb attached on an end of the second wing at a distance from the middle portion of the frame, the second limb having a first free end and a second free end with installed thereon respectively a first placing means for positioning the string and a second placing means for positioning the string;   at least one deflecting means for pulling the string from the first placing means and the second placing means of the first wing, the at least one deflecting means disposed on the first wing between the middle portion and the first limb;   at least one deflecting means for pulling the string from the first placing means and the second placing means of the second wing, the at least one deflecting means disposed on the second wing between the middle portion and the second limb,   wherein the string passes at least over the first placing means, the second placing means and the at least one deflecting means in the following sequence: the second placing means of the first limb, the deflecting means of the first wing, the first placing means of the first limb, the first placing means of the second limb, the deflecting means of the second wing, the second placing means of the second limb, and   wherein the string crosses a path of the projectile only once.   
     
     
         2 . The bow of  claim 1 , wherein at least one of the first placing means, the second placing means, and the deflecting means are rollers. 
     
     
         3 . The bow of  claim 1 , wherein the limbs are attached to the frame so that stiffness of one of the ends is higher than stiffness of the other one of the ends. 
     
     
         4 . A bow system comprising:
 a string and at least two cables, wherein the string and at least two cables are connected in series;   a frame for resting and directing a projectile, wherein the projectile is fired substantially perpendicular to the frame when the string is released, the frame having a first wing and a second wing and a middle portion between the first and second wings;   a first limb attached on an end of the first wing at a distance from a middle portion of the frame, the first limb having a first free end and a second free end with a first placing means for positioning the string and/or at least two cables and a second placing means for positioning the string and/or at least two cables installed on the respective ends of the first limb;   a second limb attached on an end of the second wing at a distance from the middle portion of the frame, the second limb having a first free end and a second free end with a first placing means for positioning the string and/or at least two cables and a second placing means for positioning the string and/or at least two cables installed on the respective ends of the second limb;   at least one deflecting means for pulling the string and/or at least two cables from the first placing means and the second placing means of the first wing, the at least one deflecting means disposed on the first wing between the middle portion and the first limb,   at least one deflecting means for pulling the string and/or at least two cables from the first placing means and the second placing means of the second wing, the at least one deflecting means disposed on the second wing between the middle portion and the second limb,   wherein the string and at least two cables pass at least over the first placing means, the second placing means and the at least one deflecting means in the following sequence: the second placing means of the first limb, the deflecting means of the first wing, the first placing means of the first limb, the first placing means of the second limb, the deflecting means of the second wing, the second placing means of the second limb, wherein the string crosses the way of the projectile only once while the at least two cables do not cross a path of the projectile.   
     
     
         5 . The bow of  claim 4 , wherein at least one of the first placing means, the second placing means, and the deflecting means are rollers. 
     
     
         6 . The bow of  claim 4 , wherein at least one of the first placing means, the second placing means, and the deflecting means are cams. 
     
     
         7 . The bow of  claim 4 , wherein the limbs are attached to the frame so that stiffness of one of the ends is higher than stiffness of the other one of the ends.