IP Library Granted Patent US 12,379,177
Granted Patent B2
US 12,379,177 · App. 18/228,379 · Granted Aug 5, 2025

Captive mainspring and integral beavertail

Inventors: Joseph Smathers (Dayton, NV); Todd Powers (Dayton, NV)
Assignee: OA DEFENSE LLC
F41A19/14
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Quick Facts
Patent No.
US 12,379,177
App. No.
18/228,379
Granted
Aug 5, 2025
Kind
B2
Abstract

A firearm with a mainspring assembly and a beavertail element integral to the frame. The firearm may include a mainspring assembly coupled to a lower portion of the frame, a hammer strut extending between the hammer and the mainspring assembly.

Claims (34)

1. A firearm comprising:

a frame;

a hammer pivotally coupled to an upper portion of the frame;

a mainspring assembly coupled to a lower portion of the frame;

a hammer strut extending between the hammer and the mainspring assembly; the mainspring assembly comprising:

a main body having a top end configured to receive a distal end of the hammer strut and retain a top end of a mainspring;

a retention clip selectively secured to a second end of the main body, serving as a retention mechanism for a bottom end of the mainspring;

the main body of the mainspring assembly comprising corresponding opposed flanges facilitating slidable engagement of the mainspring assembly with the frame;

a retention mechanism configured to secure the mainspring assembly in position relative to the frame, thereby securing the position of the mainspring relative to the frame;

wherein the retention mechanism extends through a portion of the frame into engagement with the retention clip, securing the mainspring assembly relative to the frame by way of the retention clip.

2. The firearm of claim 1 , wherein the frame comprises a beavertail portion at a rear end of the frame.

3. The firearm of claim 2 , wherein the beavertail is located under the hammer such that the shooter's hand is guarded from the hammer and a slide.

4. The firearm of claim 3 , wherein the beavertail comprises a relief to configured to receive the hammer when the hammer is in a depressed position.

5. The firearm of claim 1 , wherein the retention mechanism comprises a threaded screw extending through the frame and engaging with the retention clip, thereby securing the mainspring assembly in position relative to the frame.

6. The firearm of claim 1 , wherein the mainspring comprises a coiled spring element.

7. The firearm of claim 1 , wherein at least a portion of the mainspring assembly is fabricated from a steel alloy, a polymer, or a carbon fiber.

8. A mainspring assembly comprising:

a main body having a top end configured to receive a distal end of a hammer strut and retain a top end of a mainspring;

a retention clip selectively secured to a second end of the main body, serving as a retention mechanism for a bottom end of the mainspring; and

the main body of the mainspring assembly comprising corresponding opposed flanges facilitating slidable engagement of the mainspring assembly with a firearm frame.

9. The mainspring assembly of claim 8 , wherein the top end of the main body of the mainspring assembly further comprises a recessed cavity configured to securely receive and retain the distal end of the hammer strut.

10. The mainspring assembly of claim 8 , wherein at least a portion of the mainspring assembly is fabricated from a steel alloy, a polymer, or a carbon fiber.

11. The mainspring assembly of claim 8 , wherein the mainspring comprises a coiled spring element.

12. The mainspring assembly of claim 8 , wherein the mainspring assembly is configured to be slid vertically downward into a cavity within the frame.

13. The mainspring assembly of claim 8 , wherein the retention mechanism comprises a threaded screw extending through the frame and engaging with the retention clip, thereby securing the mainspring assembly in position relative to the frame.

14. A method of assembling a firearm:

engaging a mainspring assembly with a frame of the firearm,

wherein the mainspring assembly comprises:

a main body having a top end configured to receive a distal end of a hammer strut and retain a top end of a mainspring;

a retention clip selectively secured to a second end of the main body, serving as a retention mechanism for a bottom end of the mainspring;

the main body of the mainspring assembly comprising corresponding opposed flanges facilitating slidable engagement of the mainspring assembly with the frame;

sliding the mainspring assembly vertically downward into position relative to the frame;

securing the mainspring assembly to the frame, thereby securing a mainspring of the mainspring assembly in position relative to the frame;

installing a hammer and a hammer strut after the mainspring assembly is secured in position.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 8, 2024
From: SMATHERS, JOSEPH; POWERS, TODD
To: ORACLE ARMS, LLC
Reel/Frame 066703/0241 →
CHANGE OF NAME Recorded Mar 8, 2024
From: ORACLE ARMS LLC
To: OA DEFENSE LLC
Reel/Frame 066778/0078 →
Continuity (2)
Provisional Application 63393552 · Jul 29, 2022
Related Publication 20240035770A1 · Feb 1, 2024
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