In some embodiments, an archery bow riser comprises a body defining a first end, a second end and a grip portion. The body defines a shooting axis and comprises a first portion and a second portion. The first portion comprises a metal and the second portion comprises carbon fibers. The first portion extends to a first side of the shooting axis and to a second side of the shooting axis, and the second portion extends to the first side of the shooting axis and to the second side of the shooting axis.

An archery bow for a bow and arrow system comprises a main bow with a tensioner assembly designed to increase the pullback capacity and/or arrow firing strength of the bow. The tensioner assembly includes a first tensioner comprising an elongated bendable member made of a hard material. A middle section of the first tensioner is coupled to a main bow inner projection, wherein at least portions of the upper and lower sections of the first tensioner are offset from an inner side of the main bow, and wherein bending of the main bow causes the first tensioner to bend.

A firing system for a crossbow having an arrow rest extending along an arrow rest axis, the firing system having a right limb and a left limb, the right limb being pivotable about a right limb axis and the left limb being pivotable about a left limb axis, the firing system further including a right cam and a left cam, the right cam having a right bow string groove and being rotatable about a right cam axis, the left cam having a left bow string groove and being rotatable about a left cam axis, the firing system having a bow string extending between the right and left cams and extending within the right and left bow string grooves, the bow string positionable between an un-cocked condition and a cocked or full draw condition wherein movement of the bow string from the un-cocked condition toward the cocked condition moves the right and left cams toward each other and pivots the right and left limbs about the right and left limbs axes respectively, the firing system further including a power assembly having a power cable and a spring assembly, the power cable having a forward end operably joined to the right and left limbs and a rear end operably joined to the spring assembly, the spring assembly having a power spring extending along a power spring axis between a first spring end and a second spring end and having a central spring opening, the power spring being below the arrow rest, the power cable extending through the central spring opening from the first spring end toward the second spring end, the rear end of the power cable being operably joined relative to the second spring end of the power spring, moving the bow string from the un-cocked condition to the cocked condition causing the right and left limbs to the pull forward end of the power cable forwardly wherein the operable engagement with the second spring end compressing the power spring by pulling the second spring end toward the first spring end to produce the shooting force to propel the archery arrow.

In some embodiments, an archery bow comprises a riser, a first limb, a second limb and a bowstring. The riser comprises a first rail, a second rail and a plurality of connecting members extending between the first rail and the second rail. The riser comprises an accessory cavity comprising an aperture through the first rail. The aperture comprises an asymmetrical shape. In some embodiments, the aperture comprises a first aperture and the accessory cavity comprises a second aperture through the second rail. In some embodiments, the second aperture has the same shape as the first aperture.

A device for launching a projectile along an intended flight trajectory includes a launching mechanism with a handle. A projectile having a longitudinal axis is disposed in the launching cord in a launch position prior to launch such that the projectile's longitudinal axis is perpendicular to a plane in which the launching cord is disposed. As the projectile is launched by the launching mechanism, the projectile rotates such that the projectile's longitudinal axis is parallel to the plane in which the launching cord was disposed.

An archery bow can include a limb assembly having a limb and a cover member. The limb includes a distal end and a proximal end. The cover member can be coupled to the limb between the distal and proximal ends. The limb can have a region disposed laterally adjacent to a cam of the archery bow. The cover member can be at least partially disposed on the region. The limb can define a first length and the cover member can define a second length. The first length and the second length can define a ratio. In some examples, the limb and/or the cover member can include a plurality of protrusions extending therefrom.

The crossbow includes a frame, a first limb and a second limb connected to the frame, a first cam and a second cam mounted on opposite sides of an axis of arrow travel, a string connecting the first cam and the second cam, a first cable connecting the first cam and the first limb, and a second cable connecting the second cam and the second limb. The first cam and the second cam are mounted on a holder of the first cam and a holder of the second cam. The first cam is arranged entirely between the axis of arrow travel and a loose end of the first limb. The second cam is arranged entirely between the axis of arrow travel and a loose end of the second limb. The crossbow reduces overall dimensions of an arrow throwing device while maintaining arrow speed by changing a traditional position of cams.

A transducer attenuates a physiologically damaging vibration by converting vibration energy to fluidization energy. The transducer includes a canister defining a sealed enclosure, a powder contained within the enclosure, and a coupler for vibrationally coupling the canister to the physiologically damaging vibration. When undisturbed, the powder has a settled state occupying less than the entire enclosure of the canister. However, when excited by physiologically damaging vibration, the powder has a fluidized state occupying the entire enclosure of the canister. When agitated by the physiologically damaging vibration via the coupler, the canister transmits vibration energy to the powder contained therein and causes the powder to fluidize, thereby attenuating the physiologically damaging vibration.

A composite string such as a bowstring or cable used in archery bows and crossbows includes multiple types of strands or multiple types of materials in its strands. The different materials or strands have different properties such as stiffness, strength, abrasion resistance, or density. The string therefore has specialized properties such as different properties when subjected to different tensile loads or optimized durability. A serving material is also used to bind strands of material to the string for silencing, vibration dampening, improving durability, or providing additional rigidity to select portions of the string.

A tension management system employs moveable anchors, tension pins, ports and tuning string within torsion spring and cam elastic energy storage and deployment counteracting block and tackle systems. In conjunction with prescribed methods, launching cords and cables can be installed and replaced in field conditions, with precise tension for dynamic balance, without the need for bulky and expensive external presses.