Archery release aid

Abstract

An archery release aid is described. A trigger device for the archery release aid comprises a trigger pivotally mounted on a trigger pivot pin, the trigger movable between a cocked position and a fired position. A sear is pivotally mounted on a sear pivot pin and configured to interface with the trigger. A cocking spring is configured to bias the sear and the trigger in the cocked position. A string hook is pivotally mounted on a pivot pin. A reset spring is configured to bias the string hook in the cocked position. A roller is configured to rotate about its axis. In the cocked position the roller is retained between the sear and the string hook and in the fired position, the sear is rotated away from the roller, which allows the roller to translate and the string hook to release.

What is claimed is: 
     
         1 . A trigger device for an archery release aid, the trigger device comprising:
 a trigger pivotally mounted on a trigger pivot pin, the trigger movable between a cocked position and a fired position;   a sear pivotally mounted on a sear pivot pin, the sear configured to interface with the trigger;   a cocking spring configured to bias the sear and the trigger in the cocked position;   a string hook pivotally mounted on a pivot pin;   a reset spring configured to bias the string hook in the cocked position; and   a roller configured to rotate about its axis;   wherein in the cocked position the roller is retained between the sear and the string hook and in the fired position, the sear is rotated away from the roller, which allows the roller to translate and the string hook to release.   
     
     
         2 . The trigger device of  claim 1 , wherein the roller is retained between a protrusion on the sear and a protrusion on the string hook. 
     
     
         3 . The trigger device of  claim 2 , wherein in the cocked position, the sear protrusion, the string hook protrusion, the roller, and the sear pivot pin are substantially aligned. 
     
     
         4 . The trigger device of  claim 1 , further comprising a roller guide configured to restrict the translation of the roller. 
     
     
         5 . The trigger device of  claim 1 , wherein the bias force of the cocking spring is user adjustable. 
     
     
         6 . The trigger device of  claim 1 , wherein the sear further comprise a nub abutting the trigger, and the cocking spring biases the sear which, in turn, biases the trigger in the cocked position. 
     
     
         7 . The trigger device of  claim 1 , wherein in the cocked position, clockwise rotation of the string hook is inhibited by the roller and the sear. 
     
     
         8 . The trigger device of  claim 1 , wherein in the fired position force from the reset spring causes the string hook to return and engage the roller. 
     
     
         9 . A trigger device for an archery trigger aid, the trigger device comprising:
 a trigger; and   a string hook operatively coupled to the trigger, the string hook comprising a support shoulder configured to retain a bowstring.   
     
     
         10 . The trigger device of  claim 9 , wherein the string hook is configured to retain the bowstring via a D-loop. 
     
     
         11 . The trigger device of  claim 9 , wherein the string hook further comprises:
 an upper surface; and   a lower surface;   wherein the support shoulder joins the upper surface and the lower surface.   
     
     
         12 . The trigger device of  claim 9 , where the upper surface comprises a curved side profile that contours inwards towards the support shoulder. 
     
     
         13 . The trigger device of  claim 12 , wherein the upper surface further comprises an exit curve contoured to facilitate a smooth release of the bowstring or the D-loop. 
     
     
         14 . The trigger device of  claim 13 , wherein the exit curve is a curve on a portion of the upper surface of the string hook that the bowstring or the D-loop traverses while being released. 
     
     
         15 . A string hook for use with a trigger device for an archery trigger aid, the string hook comprising a support shoulder configured to retain a bowstring. 
     
     
         16 . The string hook of  claim 15 , further comprising:
 an upper surface; and   a lower surface;   wherein the support shoulder joins the upper surface and the lower surface.   
     
     
         17 . The string hook of  claim 16 , where the upper surface comprises a curved side profile that contours inwards towards the support shoulder. 
     
     
         18 . The string hook of  claim 15 , wherein the string hook is configured to retain the bowstring via a D-loop. 
     
     
         19 . The string hook of  claim 18 , wherein the upper surface further comprises an exit curve contoured to facilitate a smooth release of the bowstring or the D-loop. 
     
     
         20 . The string hook of  claim 19 , wherein the exit curve is a curve on a portion of the upper surface of the string hook that the bowstring or the D-loop traverses when the string hook is released.