Patent Publication Number: US-10330425-B2

Title: Unconventional compact compound bow

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     This application relates to and claims priority from the following U.S. patent applications. This application is a continuation of application Ser. No. 14/925,160 filed Oct. 28, 2015, which is hereby incorporated by reference in its entirety. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention is generally directed to mechanical projectors, more specifically bows, compound bows, and compact compound bows. 
     2. Description of the Prior Art 
     SUMMARY OF THE INVENTION 
     The present invention is generally directed to mechanical projectors. The invention is further directed to a compound bow. Further still, the invention is directed to a compound bow that shoots in a generally horizontal plane, similar to a crossbow but with compound bow features and functions. 
     The present invention is further directed to a mechanical projectile device comprising a structural riser, a pair of flexible structural limbs, and a handle, wherein the pair of structural limbs is adjustably affixed to the structural riser, the handle is adjustably, pivotally affixed to the structural riser, and the pair of structural limbs and the handle cooperate to adjust a draw weight and a draw length of the mechanical projectile device. 
     These and other aspects of the present invention will become apparent to those skilled in the art after a reading of the following description of the preferred embodiment when considered with the drawings, as they support the claimed invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  illustrates a full, top-left perspective view image of the present invention. 
         FIG. 2  illustrates a full, top-right perspective image of the present invention. 
         FIG. 3  illustrates a close up, top-left perspective view diagram of the riser, sight, and related components of the present invention. 
         FIG. 4  illustrates a top, rear perspective view image of the present invention. 
         FIG. 5  illustrates a top perspective view image of the present invention. 
         FIG. 6  illustrates a top-left, side perspective view image of the present invention. 
         FIG. 7  illustrates a rear perspective view image of the present invention. 
         FIG. 8  illustrates a bottom-right perspective view image of the present invention. 
         FIG. 9  illustrates a left side perspective view image with the handle extended of the present invention. 
         FIG. 10  illustrates a left side perspective view image with the handle collapsed of the present invention. 
         FIG. 11  illustrates a front perspective view image of the present invention. 
         FIG. 12  illustrates a top-left perspective view image of the handle connection of the present invention. 
         FIG. 13  illustrates a left-bottom-rear perspective view image of the riser and handle connection of the present invention. 
         FIG. 14  illustrates a close, top-front perspective view image of the undrawn bowstring and cable spreaders of the present invention. 
         FIG. 15  illustrates a close, right-rear perspective view image of the undrawn bowstring and cable spreaders of the present invention. 
         FIG. 16  illustrates a top-front perspective view image of a cam pulley of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     The present invention is generally directed to mechanical projectors, specifically compound bows. The present invention includes a compound bow disposed in a generally horizontal plane, parallel to the ground, wherein the compound bow includes a structural riser, limbs, cam pulleys, cables, and a bowstring to form the projecting functional units of the compound bow. Further included are a handle, arm brace, arrow rest mounts, and sight mounts. 
     In a preferred embodiment, the main body of the present invention consists of two open-frame, structural members, or riser plates, that are horizontal and parallel to each other. Across embodiments, riser plates may be polygonal or curved. In one embodiment, each riser plate may be generally hexagonal in shape, having (from center top or bottom) one or more proximal distal, and/or equidistant vertices. One or more generally short, connecting, vertical structural members may be between and connect riser plates adjacent to the one or more vertices. Riser plates, with or without the short, vertical structural members, may form a scaffolding that is substantially polyhedral, curved, or otherwise shaped, the scaffolding further having a riser interior volume. More specifically, the scaffolding forms a riser with a substantially hollow interior volume that is framed and/or bounded by riser plates and/or connecting, vertical structural members. In one embodiment, one or more linear horizontal structural members, herein termed pivot bars or rails, are mounted within the interior volume by mounting brackets at each end to the riser plates adjacent to the one or more vertices; the pivot bars extend between the short, vertical structural members such that two exterior triangles and one interior rectangle may be created within the riser plates. Disposed between the two riser plates is an arrow rest. On both the front edge and the back edge of pivot bars may be mounts, wherein the mounts removably, adjustably provide optional mounting points for accessories such as sights, scopes and arrow rests, wherein the back edge is toward the archer. Disposed between pivot bars is an ambidextrous handle, wherein the top end of the handle is adjustable between the front edge and the back edge of the riser plates along the (pivot bar) through an array of selectable mounting points, preferably two mounting points. Preferably, the handle attachment or yoke is U-shaped to allow clearance for a projectile. The pivot axle hole in the yoke is offset by ¼ the distance between the array of mounting positions in the pivot bars. This doubles the resolution of the adjustable handle by having the option to flip it around by rotating the rotatable yoke 180 degrees. In a preferred embodiment, the adjustment positions are spaced ¼″ apart and the yoke hole is offset by 1/16″, making the effective draw length adjustment resolution ⅛″. Affixed to the bottom end of the handle is a rotatable arm brace. The arm brace strap can be adjusted to accommodate various sizes. The structure of the arm brace can be secured at any angle in the plane whose normal is the general axis of the handle to accommodate arm position. In one embodiment, the arm brace is secured using a screw. Preferably, the arm brace can be adjusted by loosening the screw, moving the arm brace to the desired position, and re-securing the screw. Adjustably affixed along the front edge of one or more riser plates are flexible members or limbs that are parallel to each other and at the same distance as the riser plate to which they are affixed. Rotationally affixed at the opposite end of and between the flexible members are cam pulleys, which are connected by a linear, flexible, high-gauge, braided member, which is wrapped around at least a portion of both cam pulleys. 
     In a preferred embodiment, the riser plates are secured to each other by two sets of multifunctional crossmembers. One set serves to affix the riser plates and mount the limb pockets via the limb adjustment screws. The second set serves to affix the riser plates, provide structural rigidity to the open framed riser plates, and provide mounting points options for the handle and accessories. Disposed along the riser plates, at each of the four intersections with the vertical plane of symmetry, are optional mounting point options for accessories, such as sights, scopes, arrow rests, ballast weights, etc. These accessories may also be mounted to the adjustable handle mount members, either directly, or indirectly, through brackets. 
     The space between the riser plates, in cooperation with an arrow rest, provide for an opening through which an arrow may be shot. This general riser configuration a shoot-through riser. The present invention cooperates with an accessory arrow rest which holds the arrow directly centered. Providing a shoot-through riser system with a double-sided, open-frame design, like the present invention, affords more equally and symmetrically distributed transmission of force upon shooting for maximum accuracy, energy transfer efficiency and projectile speed. The riser design has several optional arrow rest mounting points, including the front or the back of the riser, to accommodate various arrow rests and a wide range of arrow lengths. This adaptive design is meant to support the personal preferences of the user. 
     The double-sided, open-frame riser in coordination with a centered arrow rest is perfectly symmetrical, allowing for the transfer of force from bowstring to limbs to riser to be evenly distributed across the riser. The forces act largely in the plane of the riser plate members, efficiently reducing the torsional structural stresses present in traditional cut-away riser, and allowing for a very lightweight design. The symmetry of the double-sided riser also reduces uneven limb deflection and cam lean, affording a more uniform distribution of energy transfer, improved accuracy when firing, and reduced risk of the string jumping off the cam pulley. The shape of the double-sided, open-frame riser, compared to the traditional linear riser of a compound bow, is more resistant to deflection from the forces applied to it during shooting. The shape reduces structural demands on the riser, thereby reducing the need for structural reinforcement, allowing for thinner members, and making the overall bow much lighter weight. Preferably, the riser of the present invention is made of aluminum. Alternatively, the riser may be made of any suitable composite, such as carbon fiber, or a metal with high strength-to-weight ratio. The single, linear riser of a traditional compound bow may bend or break with excess force, cycled loads, or fatigue; thus, traditional compound bows need substantial reinforcement. The closed-loop shape of the present invention is stronger and more enduring than straight risers. 
     In an alternative embodiment, the horizontally parallel, double-sided riser may be any shape, for example and not limitation, triangular, pentagonal, or any combination thereof. The riser shape does not need to be a polygon, as its design should ultimately be dictated by the desired features, function and performance of the bow, for example: limb angle, axle-to-axle distance, and component mounting. Further, the principles of this invention do not necessitate a riser with a closed shape; in one embodiment, the riser may have an open shape or a partially open shape. In yet another embodiment, the horizontal riser may not be double-sided, albeit including a bore through which the arrow may be shot, preserving the shoot-through riser characteristics and functions. Similarly, the limbs may be solid, versus split. 
     The handle preferably is positioned to rotate in a vertical plane that intersects the arrow to provide for balanced grip. Mounting the handle off the riser, as such, has several advantages, including eliminating the need for an arm guard to protect the archer from the bowstring. The extended axle of the pivoting handle intersects the arrow perpendicularly. Handle mount adjustment is in the direction of the arrow, spanning a range between the front of the riser and the back. The drawn bow&#39;s mass is preferably balanced about the pivot of the handle. Balancing can typically be achieved with intentional configuration of the accessories, such as arrow rest and sights, but can also be achieved through ballast massed if desired. Further, the handle is completely ambidextrous and symmetrical relative to the riser; no adjustments are necessary for left- or right-handedness, unlike other ambidextrous handles in the prior art that require grip adjustments, for example, for complete ambidexterity. The arm brace can be rotated to fit the preference of the user, and these preferences frequently fall into two ranges, defined by handedness. 
     A ¼″×20 threaded hole is included under the handle or arm brace to fit a monopod, bipod or tripod. This provides an optional aid in steadying the projector while aiming. Alternatively, the arm brace may be rested directly on an object like a log, gun rail, tree branch or rock, to steady the device. Neither of these methods are present in the prior art for vertical bows. Further, the arm brace, including the brace support and brace pad, provide enhanced stabilization while holding and shooting the bow by counteracting the torque created when drawing the bow. If not for the arm brace, the draw weight of the bow would be severely limited by the strength of the wrist to counteract the torque created upon drawing the bow. 
     In a preferred embodiment, the handle pivots around a horizontal axis perpendicular to the length of the arrow. This pivoting is provided by the adjustment holes in the linear, horizontal structural cross members of the riser. Pivoting mechanically eliminates the ability of the archer to draw the bowstring out of plane from the flexing limbs—a classic and natural technique problem called “torqueing.” By pivoting, and balancing the drawn bow about that pivot, the bowstring does not deflect in a direction normal to the plane of the riser and torqueing is reduced, or more preferably, effectively eliminated. Reduced or effectively eliminated torqueing creates a more efficient, consistent and accurate shot. Further, bowstring alignment with respect to the riser, limbs, cams and cables does not change no matter the shooting angle, as there is no torqueing. Further still, the pivot is mechanically designed in cooperation with the geometric center of the shoot-through riser to strategically eliminate torqueing. 
     Preferably, the angle between the handle and the horizontal plane of the riser is adjustable between about 160 degrees and about 0 degrees. In another embodiment, the angle between the handle and the horizontal plane of the riser is adjustable between about 85 degrees and about 5 degrees. In another embodiment, the angle between the handle and the horizontal plane of the riser is adjustable between about 80 degrees and about 10 degrees. In another embodiment, the angle between the handle and the horizontal plane of the riser is adjustable between about 75 degrees and about 15 degrees. In another embodiment, the angle between the handle and the horizontal plane of the riser is adjustable between about 70 degrees and about 20 degrees. In another embodiment, the angle between the handle and the horizontal plane of the riser is adjustable between about 65 degrees and about 25 degrees. In another embodiment, the angle between the handle and the horizontal plane of the riser is adjustable between about 60 degrees and about 30 degrees. The angle between the handle and the horizontal plane of the riser can be adjustable anywhere between about 160 degrees and about 0 degrees, including the embodiments listed above, and as one of ordinary skill in the art would recognize, any range between about 160 degrees and 0 degrees. The handle pivoting towards the horizontal plane of the riser is advantageous over the prior art in that it provides for a more compact bow. The variety of angles that can be formed between the handle and the horizontal plane of the riser provide for a variety of positions which effectively eliminate torqueing. This provides for a user to shoot from more angles and positions while eliminating the adverse effects of torqueing. 
     The compact bow of the present invention is also advantageous with respect to storage, carrying (such as in a backpack), avoiding obstacles when shooting, etc. In a preferred embodiment, the handle is adjustable forward and backward along the riser. By adjusting the handle position, the archer correspondingly adjusts the functional draw length of the bow. The handle adjustment preferably is in increments of ⅛″, which is accomplished by having pivot bar holes spaced ¼″ apart and a handle yoke with a pivot hole 1/16″ off-center, thereby allowing the handle yoke to be rotated 180 degrees to provide 1/16″ extension in front of or behind each pivot bar hole. The elegance of this design feature is that the functional bow remains undisturbed while the handle is moved to change the draw length. Adjusting the handle position requires little effort, and this provides for multiple users to use the same bow. Preferably, the draw length can also be adjusted without tools. Changing the effective draw length does not require any adjustment of the arrow, arrow rest, sights, limbs, cables, cams, cam modules or bowstring. In one embodiment, nothing in the bow must be disassembled to change the draw length. Advantageously, the draw length can be adjusted in real time or in near real time. In one embodiment of the present invention, the draw length can be adjusted from about 25.5 inches to about 29.125 inches. The present invention lends itself to embodiments designed for any practical range of draw lengths, including but not limited to, from about 22 inches to about 27 inches, from about 23 inches to about 28 inches, from about 24 inches to about 29 inches, from about 25 inches to about 30 inches, and any combination thereof. 
     In an alternative embodiment, the pivot bar holes are spaced about ⅓″ apart. In another alternative embodiment, the riser holes are spaced about ⅕″ apart. In yet another alternative embodiment, the pivot bar holes are spaced between about 0.508 and about 0.847 cm. Further, an alternative embodiment includes open square spaces to allow for handle connection. Further still, an alternative embodiment includes handle connections that lock in place. Further still, separate alternative embodiments contain a pivot hole on the handle yoke that is 1/14″, 1/15″, and 1/17″ off-center. Alternative embodiments use other mechanical methods for adjusting the location of the pivoting handle, such as guide rails and clamps and cantilevered struts with setscrews. Other mechanisms for adjusting the location of the pivoting handle are envisioned and within the scope of the present invention. 
     In an alternative embodiment, the handle pivots with respect to an axis perpendicular to the horizontal structural riser. In one embodiment, the handle mounts to the device via a biaxial gimbal, thus providing rotation of the compound bow in the horizontal and vertical planes. In yet another embodiment, the handle of the device pivotally attaches to the riser via a tri-axial gimbal or a mechanical ball-and-socket joint, thus providing multi-axial rotation of the bow with respect to the handle. The handle mount may be U-shaped or any other shape that allows the handle to be positioned out of the arrow&#39;s path, thus affording a clear avenue for shooting. 
     Specifications, such as draw weight, are independently adjusted from draw length. Draw weight is preferably altered to match an archer&#39;s strength. To adjust the functional draw weight, the screws affixing the limbs to the riser are loosened or tightened. Compound bows in the prior art typically have draw weight ranges of about 10 pounds. For example, a 75 pound draw weight could be adjusted down to 65 pound. The compound bow of the present invention preferably has a highly adjustable draw weight range between about 5 and about 40 pounds. More preferably, the compound bow of the present invention has a draw weight range of about 40 pounds. This is a design feature of the riser and limb pockets. An example embodiment has a draw weight that can be adjusted continuously between about 25 and about 65 pounds, thereby allowing a large adult and a small child to use the same bow. In other embodiments, the draw weight can be adjusted to be as low as 10 pounds, 15 pounds, 20 pounds, 25 pounds, 30 pounds, 35 pounds, or 40 pounds, and as high as 45 pounds, 50 pounds, 55 pounds, 60 pounds, 70 pounds, 75 pounds or 80 pounds. The compound bow of the present invention is, therefore, completely adjustable. Further, the design is such that these adjustments do not require the aid of a bow press. 
     Notably, the compound bow of the present invention has a bow speed of about 300 feet per second using an approximately 55 pound draw weight and an arrow weight of about 268 grains. 
     In a preferred embodiment, the limbs are adjustably attached to the riser via adjustment screws in the limb pockets. These adjustment screws are loosened and tightened to change the preloaded of the limbs and ultimately the draw weight, according to the user&#39;s desire. In one embodiment, the adjustment screws span about 0.1-3 inches long. Preferably, the adjustment screws span about 0.1-1.75 inches long. Alternatively, the adjustment screws are between about 0.5 inches and about 1.5 inches long. In another embodiment, the adjustment screws are between about 1 inch and 1.5 inches long. In yet another embodiment, the adjustment screws are between about 1.5 inches and 2.5 inches long. In one embodiment, the adjustment screw spans about 1.5 inches. When the screws are loosened, the bowstring is slackened and cam, cable and bowstring adjustments can be made as tuning and timing work is needed. In this way, adjustments can be made without a bow press. In the prior art, limbs may be adjustable, but if the screws are loosened to the point where the screws come out, the bow will come apart because of the flex in the limbs. However, the screws of the present invention are preferably long enough so that the limb pocket screws can be unscrewed completely or removed. This is advantageous as it allows the bow to be taken apart without specialized equipment, and also reduces or eliminates the risk of injury from taking apart the bow. Affixed to the ends of both sets of parallel split limbs, opposite the ends secured by the limb pockets, are radial cam pulleys; there is one cam pulley for each set of split limbs. Connecting the two cams are a bowstring and four cables. On the cables are cable spreaders. In a preferred embodiment of the present invention, the cam pulleys operate using a twin cam (also called two cam or dual cam) system. Alternatively, the cam arrangement can be customized to suit the archer&#39;s or manufacturer&#39;s preferences. By way of example and not limitation, other cam types that can be used include hybrid, single, or binary cams. 
     In a preferred embodiment, four cables are used along with cable spreaders. The cable spreaders serve two purposes: to feed the cables into the cam module channels in the plane of the module channels, and spread out the cables such that the arrow can pass between them without interference. With single or two cable systems, the cable often needs to be held away from the arrow&#39;s path by a system of sliders or pulleys. This is done off center, meaning that the cables, which function to flex the limbs, are not symmetrically flexing the limbs, causing them to perform differently and fatigue. The unbalanced flexing is often masked by adjusting the aim to compensate for poor arrow flight, which ultimately results in less efficient, less smooth, less accurate designs. Therefore, the four cable design, in conjunction with the cable spreaders, allows both sets of limbs to flex the same and prevent limb leaning. An alternative embodiment does not use cable spreaders with the four cable system. Yet another embodiment uses cable spreaders that do not bring the cables in the plane of the cam module channels. Alternative embodiments use cable systems that correspond to alternative cam systems and may or may not use cable spreaders. Those skilled in the art will recognize the advantages and disadvantages of applying various cam and cable systems to this bow and understand that the scope of this invention is not limited to any specific cable or cam system, or the use of cable spreaders. 
     Solid limb advocates propose that solid limbs offer better torsional stiffness and are more accurate than split limbs. Split limb advocates propose that split limbs are more durable and produced less hand-shock than solid limbs. Limb materials, technologies, and composites continue to improve, thereby reducing the strength of either advocate&#39;s proposition. However, the preferred embodiment of the present invention uses a split limb style, so that reaction forces from the limbs are more directly converted to in-plane stresses in the riser plates. In an alternative embodiment, the limbs are solid, albeit containing a slit for cam pulley insertion, attachment, and rotation. Alternative embodiments include solid limbs or split limbs, the centers of which do not align with the riser plates. In these embodiments, it is recommended, but not required, that the limbs are affixed to the riser such that the reaction forces act through the center of the riser plates. In yet another embodiment, the compound bow includes one main riser structure, and the limbs are affixed out of the plane of the riser. In yet another embodiment, the compound bow includes one main riser structure and the limbs are affixed in the plane of the riser. 
     In a preferred embodiment, the length of the compound bow from axle to axle is between about 17 to 18 inches. Alternatively, the axle-to-axle length can be anywhere from about 17 inches to 20 inches. In another embodiment, the axle-to-axle length is between about 16 inches and 23 inches, or longer if desired. However, most preferably, the axle-to-axle length is about 17 inches. This preferred axle-to-axle length is about half that of most compound bows of prior art. A small bow is advantageous because it is easily maneuverable and interference from tree limbs, shooting rails, tree trunks and ground blinds is minimized when hunting. The small size is afforded by the geometry and design of the riser, cable, and cam systems. In one embodiment, the geometry of the riser is generally triangular in shape. In other embodiments, the geometry of the riser is rectangular, pentagonal, hexagonal, heptagonal, or octagonal. Additional embodiments do not have a closed shape. It is obvious to those skilled in the art that the general outline or shape of the riser is an open design variable that is not limited by the scope of this invention. 
     In a preferred embodiment, due to its compact size and efficient management of structural stresses, the weight of the present invention is between about 2.5 to 3.0 pounds. Alternatively, the weight is between about 2.0 to 2.5 pounds. In yet another alternative, the weight is between about 3.0 and 4.0 pounds. In yet another embodiment, the weight is between 3.0 pounds and 5.0 pounds. In another embodiment, the bow is approximately 3 pounds. In another embodiment, the bow is approximately 3.5 pounds. In a preferred embodiment, the bow is about 2.8 pounds. 
     Unlike a traditional, vertically-oriented compound bow, the nontraditional, horizontally-oriented compound bow of the present invention is much less likely to interfere with a ground blind, tree stand, or thick brush while being used to hunt. Although in the horizontal plane, this compound bow requires the same shooting mechanics of the traditional compound bow, allowing an archer to easily transfer his/her skills. Further, the horizontal structure provides a great alternative for disabled archers, specifically those who are wheelchair-bound, where a vertical bow would interfere. 
       FIG. 1  illustrates a preferred embodiment of the device of the present invention. The riser  10  is the central body of the device. Pivot bars  11  are mounted to the riser by mounting brackets  17 . The pivot bars are co-planar and parallel with a projectile  40  loaded in the device and equidistant from the projectile, such that the force applied through the handle to the pivot bars is in line with the projectile&#39;s main axis (launch path). A handle  14  is attached to the riser  10  via a yoke  12 , the handle being adjustably movable from the front to the back of the pivot bars  11  using pivot attachment holes  13 . An arm brace  16  is attached to the handle. Affixed to the riser  10  are split limbs  20  via limb pockets  22 . The split limbs  20  are adjustable by adjustable limb screws  24 . At the opposite end of the split limbs  20  are cam pulleys  26 . The cam pulleys  26  at each end of each split limb  20  are connected by bowstring  30 . Centrally located in the bowstring  30  is a nock point  34  and a set of cable spreaders  32 , which provide a window for the arrow  40  to shoot through. Supporting the arrow  40  and attached to the riser  10  is an arrow rest  42 . A sight  44  is mounted to the riser via an accessory mount  43 . Notably, unused pivot adjustment holes  13  can also serve to mount accessories. The vertical bar connecting the riser is in the vertical plane, although in the present invention, with a bend inward, which is preferable. Alternatively, the bar can be completely vertical, which would allow for more pivot adjustment holes  13  and a greater change in draw length, since draw length is a product of handle  14  adjustment (i.e. draw length can be affected without modifying bowstring, cam pulleys, or limbs). 
       FIG. 2  illustrates a full, top-right perspective image of the present invention. The riser  10  is the central body of the device. A handle  14  is attached to the riser  10  via a handle yoke  12 , the handle being adjustably movable from the front to the back of the riser  10  using pivot attachment holes  13 . The yoke  12  also enables the handle to pivot using the pivot attachment holes  13 . An arm brace  16  is attached to the handle. Affixed to the riser  10  are split limbs  20  via limb pockets  22 . The split limbs  20  are adjustable by adjustable limb screws  24 . At the opposite end of the split limbs  20  are cam pulleys  26 . The cam pulleys  26  at each end of each split limb  20  are connected by bowstring  30 . Centrally located on the bowstring  30  is a nock point  34 . A set of cable spreaders  32  provide a window for the arrow to shoot through. Supporting an arrow within the riser  10  is an arrow rest  42 . A sight  44  is mounted to the riser  10  via an accessory mount  43 . The sights, arrow rest and any other accessory have several optional mounting points to accommodate various components and user preferences. 
       FIG. 3  illustrates a close up, top-left perspective view diagram of the riser  10 , sight  44 , and related components of the present invention. Attached to the riser  10  is the handle via a yoke  12 , the handle being adjustably movable from the front to the back of the riser  10  using pivot attachment holes  13 . The split limbs  20  are adjustable by adjustable limb screws  24 . Affixed to the riser  10  are split limbs  20  via limb pockets  22 . A sight  44  is mounted to the riser  10 . The sight is movable from the front to the back of the riser  10 . The handle  14  is also depicted, as well as the cable spreaders  32  and accessory mounts  43 . 
       FIG. 4  illustrates a top-rear perspective view image of the present invention. The riser  10 , yoke  12 , arm brace  16 , split limbs  20 , cam pulleys  26 , bowstring  30 , cable spreaders  32 , nock point  34 , arrow rest  42 , accessory mounts  43 , and sight  44  are depicted in this view. 
       FIG. 5  illustrates a top perspective view of the basic structure including an arm brace  16 , riser  10 , and limb pockets  22 . The yoke  12  area is displayed next to the horizontal, linear members. Accessory mounts  43  are displayed at the front edge and back edge of the riser  10 . 
       FIG. 6  illustrates a side perspective view with the handle  14  fully pivoted toward the riser  10 . The limb pockets  22 , split limbs  20 , and adjustable limb screw  24  confer complete adjustability and customizability of effective draw weight. The cam pulley  26  system is displayed at the opposite end from the limb pocket  22 . 
       FIG. 7  illustrates a rear perspective view of the present invention. The arrow rest  42 , clearly visible in this view, is directly behind the nock point  34 . The sight  44 , handle  14 , bowstring  30 , arm brace  16 , split limbs  20 , and other components are also displayed. 
       FIG. 8  illustrates a bottom-right perspective view image of the present invention. The grip screw threads  18  are clearly visible in this view. The grip screws attach the grip to the handle frame, thus allowing custom grip assembly. An archer may add a custom wood or synthetic grip, or use the custom grip assembly without adding a grip. The riser  10 , yoke  12 , pivot attachment holes  13 , handle  14 , arm brace  16 , split limbs  20 , cam pulleys  26 , bowstring  30 , cable spreaders  32 , nock point  34 , arrow  40 , arrow rest  42 , accessory mounts  43 , and sight  44  are depicted in this view. 
       FIG. 9  illustrates a left side perspective view of the present invention with a handle grip  19  covering the handle, with the handle grip  19  being held in place by grip screw  15  inserted into the grip screw threads. The yoke  12 , pivot adjustment holes  13 , arm brace  16 , split limbs  20 , limb pockets  22 , limb adjustment screw  24 , arrow  40 , and sight  44  are depicted in this view. 
       FIG. 10  illustrates a left side perspective view image with the handle collapsed of the present invention. A handle grip  19  covers the handle, with the handle grip  19  being held in place by grip screw  15  inserted into the grip screw threads. The yoke  12 , pivot adjustment holes  13 , arm brace  16 , split limbs  20 , limb pockets  22 , limb adjustment screw  24 , arrow  40 , and sight  44  are depicted in this view. 
       FIG. 11  illustrates a front perspective view of the present invention. An arrow rest  42  is removably attached to the riser  10 . A sight  44  is removably attached to the riser  10 . The riser  10 , handle  14 , arm brace  16 , handle grip  19 , split limbs  20 , and limb adjustment screw  24  are also depicted in this view. 
       FIG. 12  illustrates a top perspective view focused on the yoke  12 , which is inserted into the riser  10 , and is adjustably movable from the front to the back of the riser using the pivot adjustment holes  13 . The arm brace  16 , arrow  40 , accessory mount  43 , a limb pocket  22 , and handle  14  can also be seen in this view. 
       FIG. 13  illustrates a left-bottom-rear perspective view image of the riser and handle connection of the present invention. A yoke  12  is inserted into the riser  10 , and is adjustably movable from the front to the back of the riser. The arm brace  16 , split limbs  20 , accessory mount  43 , and handle  14  can also be seen in this view. 
       FIG. 14  illustrates a front, top perspective view of the present invention focused on the window created by the cable spreaders  32 . A nock point  34  is in the background. The riser  10 , arrow  40 , split limbs  20 , cam pulleys  26 , bowstring  30 , and arrow rest  42  are also depicted in this view. 
       FIG. 15  illustrates a close, left-rear perspective view image focused on the window created by the cable spreaders  32 . A nock point  34  is above. In the background, is a cam pulley  26 . The cable spreaders feed cables into the cam pulleys  26  and spread the cables for the arrow to shoot through. The bowstring  30 , arrow  40 , and split limbs  20  are also depicted in this view. 
       FIG. 16  illustrates a cam pulley  26  of the present invention. The bowstring  30  is wrapped around the cam pulley  26 . 
     The above-mentioned examples are provided to serve the purpose of clarifying the aspects of the invention, and it will be apparent to one skilled in the art that they do not serve to limit the scope of the invention. By way of example, the handle may pivot in multiple axes. Also by way of example, the limbs may be solid. By nature, this invention is highly adjustable, customizable and adaptable. The above-mention examples are is just some of the many configurations that the mentioned components can take on. All modifications and improvements have been deleted herein for the sake of conciseness and readability but are properly within the scope of the present invention.