Firing blocker mechanism for firearm

Patent metadata

Field	Value
Publication number	US-9222745-B2
Application number	US-201414481318-A
Country	US
Kind code	B2
Filing date	Sep 9, 2014
Priority date	Sep 10, 2013
Publication date	Dec 29, 2015
Grant date	Dec 29, 2015

Abstract

A striker-fired firearm in one embodiment includes a firing mechanism having a spring-biased blocker movable into and out of the linear path traveled by the striker to reach a chambered cartridge. A sear operates to hold the striker in a cocked position. A blocker lifter actuated by a trigger mechanism via a trigger pull raises the blocker and actuates the sear to release the striker for discharging the firearm. Upon release of the trigger, the blocker automatically returns to a blocking position obstructing the linear travel path of the striker to disable the firing mechanism.

First claim

What is claimed is:

1. An auto-loading firearm with striker firing mechanism comprising:
a longitudinal axis;
a frame;
a barrel defining a chamber for holding a cartridge;
an elongated striker movable along the longitudinal axis in a linear path to strike a chambered cartridge;
a sear pivotably disposed in the frame and configured to hold the striker in a rearward cocked position;
a blocker movable from a non-blocking position to a blocking position obstructing the linear path of the striker;
a blocker lifter pivotably disposed in the frame and operably linked to a trigger mechanism having a trigger; and
a biasing member urging the blocker into the blocking position;
wherein pulling the trigger rotates the blocker lifter which engages and moves the blocker from the blocking position to the non-blocking position allowing the firearm to be discharged;
wherein rotation of the blocker lifter engages and rotates the sear to release the striker from the cocked position for discharging the firearm.

2. The firearm of claim 1 , wherein the blocker lifter has a first surface engageable with the blocker and a second surface engageable with the sear.

3. The firearm of claim 2 , wherein the first and second surfaces are located below a pivot axis of the blocker lifter.

4. The firearm of claim 1 , wherein the sear and blocker lifter are pivotably mounted on a common pivot axis.

5. The firearm of claim 1 , wherein the blocker lifter comprises a forward extending actuating arm defining an upward facing surface which engages a bottom facing surface on an underside of the blocker.

6. An auto-loading firearm with striker firing mechanism comprising:
a longitudinal axis;
a frame;
a barrel defining a chamber for holding a cartridge;
an elongated striker movable along the longitudinal axis in a linear path to strike a chambered cartridge;
a sear pivotably disposed in the frame and configured to hold the striker in a rearward cocked position;
a blocker movable from a non-blocking position to a blocking position obstructing the linear path of the striker;
a blocker lifter pivotably disposed in the frame and operably linked to a trigger mechanism having a trigger; and
a biasing member urging the blocker into the blocking position;
wherein pulling the trigger rotates the blocker lifter which engages and moves the blocker from the blocking position to the non-blocking position allowing the firearm to be discharged;
wherein the blocker lifter includes a laterally extending actuating post arranged to engage the trigger bar for rotating the blocker lifter via a trigger pull.

7. The firearm of claim 1 , wherein the blocker lifter is disposed laterally adjacent the sear, the blocker lifter being configured to engage the sear in a manner such that rotating the blocker lifter simultaneously rotates the sear to release the striker from the cocked position.

8. The firearm of claim 7 , wherein the sear includes a rearwardly open recess that receives and engages a lateral protrusion of the blocker lifter for rotating the sear.

9. The firearm of claim 1 , wherein the blocker is linearly movable in a vertical direction between the non-blocking and blocking positions.

10. An auto-loading firearm with striker firing mechanism comprising: further comprising a lower blocking extension extending downwards from the blocker, the blocking extension defining a rear facing blocking surface arranged to engage a corresponding forward facing engagement surface of a striker catch protrusion when the blocker is in the blocking position to arrest forward movement of the striker;
a longitudinal axis;
a frame;
a barrel defining a chamber for holding a cartridge;
an elongated striker movable along the longitudinal axis in a linear path to strike a chambered cartridge;
a sear pivotably disposed in the frame and configured to hold the striker in a rearward cocked position;
a blocker movable from a non-blocking position to a blocking position obstructing the linear path of the striker;
a blocker lifter pivotably disposed in the frame and operably linked to a trigger mechanism having a trigger; and
a biasing member urging the blocker into the blocking position;
a lower blocking extension extending downwards from the blocker, the blocking extension defining a rear facing blocking surface arranged to engage a corresponding forward facing engagement surface of a striker catch protrusion when the blocker is in the blocking position to arrest forward movement of the striker;
wherein the blocker is linearly movable in a vertical direction between the non-blocking and blocking positions;
wherein pulling the trigger rotates the blocker lifter which engages and moves the blocker from the blocking position to the non-blocking position allowing the firearm to be discharged.

11. The firearm of claim 1 , further comprising a reciprocating slide slideably disposed on the frame.

12. An auto-loading firearm with striker firing mechanism comprising:
a longitudinal axis;
a frame;
a reciprocating slide disposed on the frame;
a barrel defining a chamber for holding a cartridge;
a spring-biased striker movable in a linear path between rearward and forward positions for striking a chambered cartridge, the striker including a catch protrusion;
a trigger mechanism including a trigger bar coupled to a trigger pivotably mounted to the frame, the trigger bar movable in rearward and forward axial directions via operation of the trigger;
a sear pivotably disposed in the frame and operable to engage the catch protrusion for holding the striker in a rearward cocked position;
a blocker having a blocking surface movable from a non-blocking position to a blocking position obstructing the linear path of the striker;
a blocker lifter pivotably disposed in the frame and operably linked to the trigger mechanism and sear; and
a biasing member urging the blocker into the blocking position;
wherein pulling the trigger rotates the blocker lifter which engages and moves the blocker from the blocking position to the non-blocking position allowing the firearm to be discharged; and
wherein rotating the trigger further moves the sear to disengage the catch protrusion and release the striker from the cocked position;
wherein the trigger bar moves axially forward upon pulling the trigger and in turn rotates the blocker lifter for moving the blocker.

13. The firearm of claim 12 , wherein the blocker lifter includes a laterally extending actuating post arranged to engage the trigger bar for rotating the blocker lifter via a trigger pull.

14. The firearm of claim 13 , wherein the actuating post engages an operating window formed in an enlarged rear end portion of the trigger bar.

15. The firearm of claim 12 , wherein the blocker lifter comprises a forward extending actuating arm defining an upward facing surface which engages a bottom facing surface on an underside of the blocker.

16. The firearm of claim 12 , wherein the sear and blocker lifter are pivotably mounted on a common pivot axis.

17. A method for discharging a firearm comprising:
providing a firearm having a longitudinal axis, a frame, a trigger mechanism, a striker movable forward and rearward along the longitudinal axis in a linear path, and a blocker movable into and out of the linear path;
biasing the blocker into the linear path;
pulling a trigger of the trigger mechanism;
rotating a blocker lifter with the trigger mechanism which moves the blocker out of the linear path;
rotating a sear holding the striker in a rearward cocked position to release the stri

Assignees

• Sturm Ruger & Co

Inventors

• Kallio Robert A

Classifications

• F41A17/72 Primary

  trigger-operated, i.e. the movement of the trigger bringing a firing-pin safety into inoperative position during the firing · CPC title