| 摘要 |
The projectile launcher with internal bow includes a riser base, an elongate barrel assembly attached to the riser base, a crank mechanism attached to the back of the barrel assembly, a trigger assembly, and an internal bow assembly mounted to the riser base. The crank assembly includes a rotatable crank for selective reciprocation of a cocking pawl carriage riding inside a rail system in the barrel assembly. A biased cocking pawl in the pawl carriage selectively engages a projectile stirrup carriage riding on top of the rail system to push the stirrup carriage into a cocked position. The internal bow assembly includes reversed and vertically spaced, upper and lower resilient bow arms and respective pulleys and cables interconnecting the bow arms and the stirrup carriage. Cocking of the stirrup carriage flexes the bow arms in preparation for placement and firing of a projectile. |
| 主权项 |
1. A projectile launcher, comprising:
a riser base, the riser base having a top, a bottom, and a front; a barrel assembly attached to the riser base, the barrel assembly having an elongate rail system adapted for placement of a projectile, the rail system having a top and a bottom; a projectile stirrup carriage slidably engaged with the top of the rail system, the projectile stirrup carriage being adapted for supporting the back of the projectile for selective release thereof; a cocking mechanism coupled to the rail system, the cocking mechanism having a cocking pawl carriage selectively engageable with the projectile stirrup carriage to cock the projectile stirrup carriage into a cocked position; a propulsion system coupled to the riser base, the propulsion system storing potential energy during cocking of the projectile stirrup carriage into a cocked position, the propulsion system releasing the potential energy as kinetic energy accelerating the projectile stirrup carriage when the projectile stirrup carriage is released from the cocked position in order to fire the projectile, wherein said propulsion system comprises upper and lower bow arms; a dynamic balancing mechanism coupled to the propulsion system, the dynamic balancing mechanism maintaining a substantially straight linear transfer of kinetic energy substantially parallel to the rail system during firing of the projectile, wherein said dynamic balancing mechanism comprises a weighted end mounted to a distal end of said upper bow arm, the weighted end counterbalancing differences in mass and weight between said upper bow arm and said lower bow arm a crank mechanism attached to the rail system, the crank mechanism selectively reciprocating the cocking carriage; and a trigger assembly attached to the riser base, the trigger assembly selectively catching and releasing the projectile stirrup carriage. |
