Reduced friction, low profile trigger mechanism

Abstract

A trigger mechanism assembly for a firearm provides a horizontal arrangement of its sear relative to a trigger of the firearm by way of a linkage bar. The sear and a disconnector share a pivot point, wherein at each engagement surface between the pivot point and the sear and the disconnector, respectively, there is a bearing. A pair of mandibles is provided, one mandible by each of the sear and the disconnector. A spring is operatively associated between the sear and the disconnector to bias them to rotate about the pivot point dependently, whereby a first 10 distance between the pair of mandibles is maintained. An inclined surface is provided along at least one mandible so that a downward force urged by a hammer against the inclined surface moves the disconnector independently of the sear, whereby a second distance between the pair of mandibles is greater than the first distance.

What is claimed is: 
     
         1 . A trigger mechanism assembly for a firearm, the assembly comprising:
 a sear operatively associated with a pivot point;   a sear bearing operatively associated with the sear and the pivot point; and   a linkage bar having a distal end and a proximal end, wherein the distal end is directly connected to the sear and the proximal end is operatively associated with a trigger of the firearm.   
     
     
         2 . The assembly of  claim 1 , wherein a distance between the distal and proximal ends is at least one-half an inch. 
     
     
         3 . A trigger mechanism assembly for a firearm, the assembly comprising:
 a pivot point;   a sear rotatably mounted to the pivot point;   wherein the rotatable mount comprises a bearing; and   a linkage bar having a distal end and a proximal end, wherein the proximal end operatively associated with a trigger of the firearm, and wherein the distal end is directly connected to the sear so that the sear is movable between a disengaged position and an engaged position for engaging a hammer of the firearm in a cocked condition.   
     
     
         4 . The assembly of  claim 3 , wherein the sear provides a sear forward arm dimensioned and shaped for receiving the hammer. 
     
     
         5 . The assembly of  claim 4 , a spring operatively disposed to the sear, wherein the spring biases the forward arm. 
     
     
         6 . The assembly of  claim 5 , further comprising a disconnector forward arm comprising an inclined surface for converting a downward force on the inclined surface to a lateral force rotating a disconnector about the pivot point independently of the sear, whereby the downward force is caused by the hammer moving to the cocked condition. 
     
     
         7 . The assembly of  claim 6 , wherein the sear has a first sear arm and a second sear arm, wherein the first sear arm is directly connected to said distal end, and wherein the second sear arm operatively associates with the spring. 
     
     
         8 . The assembly of  claim 7 , wherein the disconnector provides a protrusion against with the spring is mounted relative to the second sear arm. 
     
     
         9 . The assembly of  claim 8 , wherein the disconnector forward arm has a wedge-shape surface. 
     
     
         10 . The assembly of  claim 9 , wherein a horizontal distance between trigger and the pivot point is at least one-half of an inch.