Interrupted semi-automatic action for firearms

Patent metadata

Field	Value
Publication number	US-11441865-B2
Application number	US-201916710620-A
Country	US
Kind code	B2
Filing date	Dec 11, 2019
Priority date	Dec 11, 2018
Publication date	Sep 13, 2022
Grant date	Sep 13, 2022

Abstract

forward closed breech position in battery with the barrel and rearward open breech position, a cockable hammer controlled by a trigger, and a bolt release mechanism operably interacting with the bolt. The mechanism may comprise a user-actuated release button and spring-biased disconnect lever coupled thereto and selectively engageable with the hammer. Upon firing, the bolt travels rearward under recoil contacting and partially rotating the disconnect lever to engage the hammer, while simultaneously engaging the hammer which holds the bolt rearward. Actuating the release button fully rotates the disconnect lever to disengage the hammer from the bolt which returns to its forward position via a recoil spring to reclose the breech. A dual interlock safety in one position provided by the release mechanism prevents pulling the trigger and in another position prevents actuating the release button.

First claim

What is claimed is:

1. A firearm with interrupted action comprising:
a longitudinal axis;
a receiver defining a longitudinally-extending cavity;
a barrel supported by the receiver;
a trigger movably mounted to the receiver;
a bolt slideably mounted in the cavity of the receiver for movement between a forward position in battery with the barrel and a rearward position;
a cockable hammer operably interacting with the trigger, the hammer pivotably movable about a pivot axis between a rear cocked position and a forward fire position via pulling the trigger;
the hammer configured and operable to retain the bolt in the rearward position after a trigger pull to fire the firearm; and
a bolt release mechanism operably interacting with the bolt, the bolt release mechanism comprising a user-actuated release button and a spring-biased disconnect lever coupled to the release button;
wherein actuating the release button when the bolt is in the rearward position releases the bolt;
wherein the release button is axially aligned with the longitudinal axis of the firearm.

2. The firearm according to claim 1 , further comprising a transversely oriented pivot pin pivotably coupling the disconnect lever to the release button.

3. The firearm according to claim 1 , wherein the release button is movable upwards to an actuated position to release the bolt from its rearward position.

4. The firearm according to claim 3 , further comprising a reset spring biasing the release button towards a downward unactuated position.

5. The firearm according to claim 1 , wherein the trigger comprises a sear protrusion configured to directly engage and hold the hammer in the cocked position when the trigger is unpulled, and wherein pulling the trigger releases the hammer to discharge the firearm.

6. The firearm according to claim 1 , wherein the disconnect lever comprises a travel stop which engages the receiver to limit an uppermost position of the disconnect lever.

7. A firearm with interrupted action comprising:
a longitudinal axis;
a receiver defining a longitudinally-extending cavity;
a barrel supported by the receiver;
a trigger movably mounted to the receiver;
a bolt slideably mounted in the cavity of the receiver for movement between a forward position in battery with the barrel and a rearward position;
a cockable hammer operably interacting with the trigger, the hammer pivotably movable about a pivot axis between a rear cocked position and a forward fire position via pulling the trigger;
the hammer configured and operable to retain the bolt in the rearward position after a trigger pull to fire the firearm; and
a bolt release mechanism operably interacting with the bolt, the bolt release mechanism comprising a user-actuated release button and a spring-biased disconnect lever coupled to the release button;
wherein actuating the release button when the bolt is in the rearward position releases the bolt;
wherein release button comprises an exposed actuating portion extending rearwardly from the rear of the receiver for engagement by the user to actuate the bolt release mechanism.

8. A firearm with interrupted action comprising:
a longitudinal axis;
a receiver defining a longitudinally-extending cavity;
a barrel supported by the receiver;
a trigger movably mounted to the receiver;
a bolt slideably mounted in the cavity of the receiver for movement between a forward position in battery with the barrel and a rearward position;
a cockable hammer operably interacting with the trigger, the hammer pivotably movable about a pivot axis between a rear cocked position and a forward fire position via pulling the trigger;
the hammer configured and operable to retain the bolt in the rearward position after a trigger pull to fire the firearm; and
a bolt release mechanism operably interacting with the bolt, the bolt release mechanism comprising a user-actuated release button and a spring-biased disconnect lever coupled to the release button;
wherein actuating the release button when the bolt is in the rearward position releases the bolt;
wherein the release button is movable upwards to an actuated position to release the bolt from its rearward position;
wherein moving the release button upwards rotates a forwardly extending working protrusion of the disconnect lever downwards which in turn directly engages and rotates the hammer downwards to release the bolt.

9. The firearm according to claim 8 , wherein the working protrusion of the disconnect lever engages a top surface of the hammer to force the hammer downwards to release the bolt.

10. A firearm with interrupted action comprising:
a longitudinal axis;
a receiver defining a longitudinally-extending cavity;
a barrel supported by the receiver;
a trigger movably mounted to the receiver;
a bolt slideably mounted in the cavity of the receiver for movement between a forward position in battery with the barrel and a rearward position;
a cockable hammer operably interacting with the trigger, the hammer pivotably movable about a pivot axis between a rear cocked position and a forward fire position via pulling the trigger;
the hammer configured and operable to retain the bolt in the rearward position after a trigger pull to fire the firearm; and
a bolt release mechanism operably interacting with the bolt, the bolt release mechanism comprising a user-actuated release button and a spring-biased disconnect lever coupled to the release button;
wherein actuating the release button when the bolt is in the rearward position releases the bolt;
further comprising an operating spring arranged between the release button and the disconnect lever, the operating spring biasing the disconnect lever towards an upward position.

11. The firearm according to claim 10 , wherein the disconnect lever is vertically positioned to at least partially enter the cavity of the receiver to engage the bolt when the bolt is in its rearward position.

12. The firearm according to claim 11 , wherein when the bolt moves from the forward position to the rearward position with the disconnect lever in the upward position, the bolt pushes the disconnect lever downwards into engagement with the hammer which is held in the cocked position by the disconnect lever.

13. A firearm with interrupted action comprising:
a longitudinal axis;
a receiver defining a longitudinally-extending cavity;
a barrel supported by the receiver;
a trigger movably mounted to the receiver;
a bolt slideably mounted in the cavity of the receiver for movement between a forward position in battery with the barrel and a rearward position;
a cockable hammer operably interacting with the trigger, the hammer pivotably movable about a pivot axis between a rear cocked position and a forward fire position via pulling the trigger;
the hammer configured and operable to retain the bolt in the rearward position after a trigger pull to fire the firearm; and
a bolt release mechanism operably interacting with the bolt, the bolt release mechanism comprising a user-actuated release button and a spring-biased disconnect lever coupled to the release button;
wherein actuating the release button when the bolt is in the rearward position releases the bolt;
wherein the trigger comprises a trigger block protrusion selectively engageable with a locking recess on the bolt release mechanism, wherein the release button is not movable to release the bolt when the trigger block protrusion is engaged with the locking recess.

14. The firearm according to claim 13 , wherein pulling the trigger engages the trigger block protrusion with the locking recess, and releasing the trig

Assignees

• Sturm Ruger & Co

Inventors

• Barrett Jonathan
• Mather Jonathan Philip

Classifications

• F41A19/10

  Triggers; Trigger mountings · CPC title

• F41A19/14

  Hammers, i.e. pivotably-mounted striker elements; Hammer mountings · CPC title

• F41A19/45 Primary

  for catching the hammer after each shot, i.e. in single-shot or semi-automatic firing mode · CPC title

• F41A19/47

  Cocking mechanisms · CPC title

• F41A17/42

  Safeties for locking the breech-block or bolt in a safety position (F41A17/32, F41A17/36, F41A17/40 take precedence {; anti-rebound arrangements F41A3/70}) · CPC title