Crossbow having trigger mechanism with arrow retention

Abstract

A nock for an archery arrow or bolt. The nock includes a radial indention configured to be engaged by a biased retainer of a trigger mechanism of a crossbow to retain the arrow or bolt in a desired position relative to the trigger mechanism and/or a bowstring. The radial indention may optionally comprise a groove defined generally continuously around a circumference of the nock. The radial indention is exposed when the nock is coupled with an arrow or bolt such that the radial indention may be engaged by a biased retainer within the trigger mechanism. The nock may further include a generally planar rearward bearing surface configured for being engaged by a bowstring. The nock of the present invention may be suitable for use with a multiple-shot crossbow or a single-shot crossbow. Other aspects of the present invention are directed to a projectile, a projectile retention system, and a crossbow.

What is claimed is: 
     
         1 . A crossbow and projectile system, the system comprising:
 a crossbow including a trigger mechanism having a biased projectile retainer, the biased projectile retainer comprising:
 a detent mechanism; and 
 a biasing member for providing a biasing force against the detent mechanism; 
   a projectile comprising:
 a shaft; and 
 a nock at least partially extending from the shaft, the nock including at least one radial indention defined therein; 
   wherein the detent mechanism is configured to engage the radial indention of the nock to retain the projectile in a position relative to at least one of the trigger mechanism and a bowstring.   
     
     
         2 . The system of  claim 1 , wherein the projectile is at least one of an archery arrow and an archery bolt. 
     
     
         3 . The system of  claim 1 , wherein the detent mechanism is adapted for being at least partially received within the radial indention of the nock. 
     
     
         4 . The system of  claim 1 , wherein a width of the detent mechanism generally corresponds to a width of the radial indention of the nock. 
     
     
         5 . The system of  claim 1 , wherein the detent mechanism is at least one of a spherical ball, a cylindrical pin, and a plunger. 
     
     
         6 . The system of  claim 1 , wherein the biasing member is a spring. 
     
     
         7 . The system of  claim 1 , wherein the detent mechanism is biased toward a bolt-absent position. 
     
     
         8 . The system of  claim 7 , wherein when a bolt is positioned on a rail of the crossbow, the detent mechanism is forced into a bolt-present position. 
     
     
         9 . The system of  claim 1 , wherein the nock defines a longitudinal axis, and wherein a rearward segment of the nock defines a rearward bearing planar surface that is generally perpendicular to the longitudinal axis. 
     
     
         10 . The system of  claim 1 , wherein the at least one radial indention is a groove defined generally continuously around a circumference of the nock. 
     
     
         11 . The system of  claim 1 , wherein the at least one radial indention comprises a plurality of grooves defined generally intermittently around a circumference of the nock. 
     
     
         12 . A crossbow comprising:
 a trigger mechanism including:
 a housing; 
 a trigger; and 
 a biased projectile retainer, the biased projectile retainer including:
 a detent mechanism; and 
 a biasing member for providing a biasing force against the detent mechanism; 
 
 wherein the detent mechanism is configured to engage a radial indention defined in a nock to retain a projectile in a position relative to at least one of the trigger mechanism and a bowstring. 
   
     
     
         13 . The crossbow of  claim 12 , wherein the detent mechanism is adapted for being at least partially received within the radial indention of the nock. 
     
     
         14 . The crossbow of  claim 12 , wherein the detent mechanism is at least one of a spherical ball, a cylindrical pin, and a plunger. 
     
     
         15 . The crossbow of  claim 12 , wherein the biasing member is a spring. 
     
     
         16 . The crossbow of  claim 12 , wherein the detent mechanism is biased toward a bolt-absent position. 
     
     
         17 . The crossbow of  claim 16 , wherein when a bolt is positioned on a rail of the crossbow, the detent mechanism is forced into a bolt-present position. 
     
     
         18 . A trigger mechanism for a crossbow, the trigger mechanism comprising:
 a housing;   a trigger; and   a biased projectile retainer, the biased projectile retainer including:
 a detent mechanism; and 
 a biasing member for providing a biasing force against the detent mechanism; 
   wherein the detent mechanism is configured to engage a radial indention defined in a nock to retain a projectile in a position relative to at least one of the trigger mechanism and a bowstring.