Abstract: An eccentric for mounting at the distal end of a limb of a compound archery bow includes a step-down take-up ramp which combines the features of the side-by-side and step-down eccentrics of known eccentrics while maintaining vane clearance and avoiding development of twist on the limb. The eccentric is also provided with a cable clamp device permitting adjustment of the draw of the bow and a pivot insert which permits adjustable pivot locations for the eccentric.

Abstract: In a compound bow a pin is carried at one end of the tension cable and fitted through an axial hole in the eccentric wheel at the end of the flexible limb. A peripheral groove is formed in the pin at its end opposite from the cable, and the bowstring is looped around the pin, lying in the groove. The cable lies on one side of the wheel and the bowstring on the opposite side so that the pin is trapped in the hole in the wheel and no additional parts are required for retaining the pin in the wheel.

Abstract: A bowstring apparatus for use with an archer's bow comprising a pair of ring members each rotatably mounted on an axle pin with a tip interconnector attachably securing each limb tip to each axle pin and further interconnecting each axle pin to each other to enable each ring member to rotate about a parallel axle pin axis relative each other and with an arc member axially spaced on the axle pin and securely attached to the ring member so as to permit simultaneous rotation about the axle pin when the ring member rotates. A flexible cord member secures together each distal end of the arc member to enable simultaneous tensioning when the ring members are tensioned.

Abstract: A power unit archery bow wherein a frame member is secured with respect to a first end of at least one limb member by a spring-actuated power unit. A bow string secured to a second distal end of the limb member is adapted to engage an arrow and to be drawn rearwardly by a user. Retraction of the bow string causes the limb member to rotate rearwardly, whereby the entire length of the limb member is utilized to load the spring member of the power unit. Upon release of the bow string, the energy stored by the power unit spring is instantaneously released, being transmitted to the limb member to rotate the limb member to its original position so as to straighten the bow string and propel the arrow forwardly. Because the entire length of the limb member provides leverage to the power unit, the requisite pull force for the bow is greatly reduced.

Abstract: A compound bow is disclosed that is fully adjustable for draw weight, draw length and let-off. The disclosed bow includes a frame assembly, a pair of bow limbs adjustably coupled at a first end thereof to the frame assembly to provide adjustment of the draw weight of the compound bow, an eccentric wheel coupled to a second end of each of the bow limbs, each eccentric wheel having a top cable travel groove and a bottom cable travel groove, wherein the bottom cable travel groove includes a let-off channel and a bow grip assembly coupled to the frame assembly. The frame assembly is mounted via a pivot pan assembly to draw length bar so that the draw length of the bow is fully adjustable.

Abstract: An archery bow for propelling an arrow at a velocity depending on the draw strength of the bow. The bow includes a handle section having first and second ends; an elongated first limb having a proximal end attached relative to the first end of the handle section, and having a distal end; an elongated second limb having a proximal end attached relative to the second end of the handle section, and having a distal end; a bowstring extending between the distal ends of the first and second limbs; and assist structure for reducing the amount of force required to draw the bowstring to a full draw while maintaining the arrow velocity produced when the bowstring is released.

Abstract: the end stretch cables of the rigging for a compound bow are provided as take-up and let-off segments which attach to opposite ends of a cross-bolt anchor member jounraled through the eccentrics of the rigging.

Abstract: A compound bow utilizes tension cables and bowstring cables acting on grooved cam pulley assemblies. The tension cables are not connected to the bowstring cables at the pulley assemblies but rather are separated at the pulleys and each separate end is formed as a loop. An attachment knob is formed integrally within the confines of the pulley and is provided with a re-entrant notch to provide a retainer attachment for the looped ends of a bowstring cable. A similar attachment can be provided for the ends of the tension cables. The concept may also be used to adjust draw length or tuning of the wheel timing as effected by the cable length by providing more than one knob spaced to allow shifting a looped end from one knob to another. The knobs with appropriate notches for the tension cables face in a direction opposite to those which receive the loop of the bowstring cable.

Abstract: An archery bow of the compound type with eccentrically mounted cam wheels or pulleys, one to carry the bowstring at each end, and one to carry the tension cable at each end. The tension cables are anchored at each end on small grooved discs which retain closed loops at the anchor end of the cables. The discs are centrally perforate to receive and be retained by an axle which also mounts the pulleys. Each disc has a plurality of slotted openings, or notches around a center, terminating in bights which are progressively at different distances from the center. This allows selective tensioning on the tension cables to tune the bow and adjust cable length.