A bumper for limiting a string displacement on a projectile accelerating apparatus is described for absorbing vibrations thereof, the bumper comprising an hollowed body including an opening portion at a first end of the body, an expansion portion inside the hollowed body and adjacent to the opening portion, a damper portion adjacent to the expansion portion inside the hollowed body, the damper portion including a volume of air that is compressible when the opening portion is closed, and a string-contacting portion disposed on an exterior surface of a second end of the body, the distal wall and the string-contacting portion being moveable toward the opening portion to compress the volume of air in the damper portion in consequence of a string contact on the string-contacting portion. A projectile accelerating apparatus including same and a method of using same are also presented.

A bumper for limiting a string displacement on a projectile accelerating apparatus is described for absorbing vibrations thereof, the bumper comprising an hollowed body including an opening portion at a first end of the body, an expansion portion inside the hollowed body and adjacent to the opening portion, a damper portion adjacent to the expansion portion inside the hollowed body, the damper portion including a volume of air that is compressible when the opening portion is closed, and a string-contacting portion disposed on an exterior surface of a second end of the body, the distal wall and the string-contacting portion being moveable toward the opening portion to compress the volume of air in the damper portion in consequence of a string contact on the string-contacting portion. A projectile accelerating apparatus including same and a method of using same are also presented.

In some embodiments, a crossbow cocking device comprises a rope and a hook engaged with the rope. The hook defines a longitudinal axis and comprises a valley, a surface of the valley oriented at a non-orthogonal angle to the longitudinal axis.

In some embodiments, a crossbow cocking device comprises a rope and a hook engaged with the rope. The hook defines a longitudinal axis and comprises a valley, a surface of the valley oriented at a non-orthogonal angle to the longitudinal axis.

A projectile launching device includes self-timing without cam lean. The projectile launching device may include a rail, a riser, two energy storing components, (such as two limbs), two cams, a launch string, and at least one cable. The ends of the launch string are attached to the two cams. Opposing ends of first and second cables may be coupled to the rail or riser. A mid-portion of the first and second cables are slideably engaged with the first and second cams, respectively. Alternatively, a single cable may replace the first and second cables. The two cams are preferably built as mirror images of each other at a centerline of the rail. The two cams include a launch string track, having identical, but mirrored, upper and lower cable tracks.

A crossbow is configured to shoot a projectile. The crossbow includes a frame having a stock positioned at a rear end, the frame defining a horizontal projectile plane at a top side in which a projectile axis is positioned. The projectile moves within the horizontal projectile plane and along the projectile axis during firing and arming of the crossbow, and the projectile is fired from a front end of the frame. The crossbow further includes a drawstring hub connectable to ends of a drawstring. Rotation of the drawstring hub in at least one direction is powered, such as by a force applied by flexed limbs. The crossbow further includes drawstring guides attached to the frame for guiding the drawstring across the projectile axis between the ends of the drawstring. The first and second drawstring guides each include a pulley wheel, wherein the drawstring is guided at least partially around each pulley wheel. A further aspect is a crossbow having a frame comprised of a first frame portion and a second frame portion that are detachably coupled to one another via a fastening mechanism.

A crossbow including a riser, a limb coupled to the riser, and a cam assembly rotatably coupled to the limb about an axis of rotation. The cam assembly including a string guide defining a plane of rotation of the cam assembly about the axis of rotation and structured to support a drawstring, a drawstring attachment point structured to engage the drawstring, a power cable journal extending away from the plane of rotation along the axis of rotation and structured to support a power cable, and a power cable attachment point structured to engage the power cable. The power cable journal is shaped to displace the power cable away from the plane of rotation as the crossbow is drawn from a released configuration to a drawn configuration to provide a gap sized to permit the drawstring attachment point and the power cable attachment point to pass between the power cable and the plane of rotation.

A crossbow including a riser, a limb coupled to the riser, and a cam assembly rotatably coupled to the limb about an axis of rotation. The cam assembly including a string guide defining a plane of rotation of the cam assembly about the axis of rotation and structured to support a drawstring, a drawstring attachment point structured to engage the drawstring, a power cable journal extending away from the plane of rotation along the axis of rotation and structured to support a power cable, and a power cable attachment point structured to engage the power cable. The power cable journal is shaped to displace the power cable away from the plane of rotation as the crossbow is drawn from a released configuration to a drawn configuration to provide a gap sized to permit the drawstring attachment point and the power cable attachment point to pass between the power cable and the plane of rotation.

An archery limb control system, method and bow are described herein. The archery limb control system, in an embodiment, includes an energy resource, a plurality of flexible lines, and a driver. The driver includes a support coupled to the flexible lines and a gear coupled to the support.

An archery limb control system, method and bow are described herein. The archery limb control system, in an embodiment, includes an energy resource, a plurality of flexible lines, and a driver. The driver includes a support coupled to the flexible lines and a gear coupled to the support.