US12379177 - Captive mainspring and integral beavertail

The patent describes a firearm featuring an integral mainspring assembly and beavertail element within the frame, enhancing structural integrity and functionality. The mainspring assembly includes a retention mechanism that secures its position relative to the frame, ensuring reliable operation of the hammer and mainspring.

Claim 1

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. 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 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.

Google Patents

https://patents.google.com/patent/US12379177

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12379177