Two-stage trigger mechanism for firearms

Abstract

A multi-stage trigger mechanism for a firearm having a trigger body that is pivotally mounted to the receiver of a firearm having a pivotally moveable spring-urged hammer having a trigger hook and a hammer hook. A disconnector is pivotally mounted to the trigger body and has a spring retainer securing a disconnector spring to the disconnector. The disconnector has a hook member defining a timing surface that serves to delay hammer reset and provides enhanced trigger hook engagement to prevent doubling during firing activity.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates generally to firearms, particularly firearms having trigger assemblies that are cocked or made ready for firing by rearward movement of a bolt or bolt carrier within a receiver mechanism of a firearm. More particularly, the present invention concerns a two-stage trigger mechanism having a first stage that is activated by movement of a trigger member by application of a desired first stage manual trigger force and a second stage that is activated by further movement of the trigger member by application of a desired second stage manual force. This invention also concerns the provision of angulated surfaces on the disconnector of the trigger mechanism to provide for dual stage operation and to minimize any potential for fired round doubling.[0003]2. Description of the Prior Art[0004]Every firearm has historically been provided with a trigger mechanism to provide the user with the capability fo...

AI Technical Summary

Benefits of technology

The present invention provides a multi-stage trigger mechanism with a unique disconnector geometry that ensures better engagement between the hammer and the trigger. The disconnector stop member prevents the disconnector from over-traveling as the trigger mechanism cycles. Additionally, the disconnector member is pivotally mounted to the trigger body and is urged by a disconnector spring to a position for engagement of the hammer engaging cam surface geometry. The disconnector geometry also includes an angulated surface portion that establishes a hammer timing surface of greater length than is conventional, which holds the hammer down longer during reset, thereby preventing the trigger mechanism from inadvertently permitting doubling when the trigger is operated during firing activity.

Problems solved by technology

Some adjustable multi-stage trigger mechanisms suffer from the uncertainty of adjustment screws or set screws which can become loose or move during firing activity, thereby changing the operational character of the trigger mechanisms.

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