Dec 9, 2025

US12492876 - Firearm safety feature

A novel firearm safety feature includes arresting surfaces for preventing the fall of a hammer in the event of a spontaneous failure of other firearm parts. In a particular embodiment a safety lug has an arresting surface and the hammer has a complementary arresting surface. In the event of a spontaneous failure, the arresting surface and the complementary arresting surface create a positive engagement and prevent the hammer from falling. In another embodiment, a grip safety includes an arresting surface and the hammer includes a complementary arresting surface. In the event of a spontaneous failure, the arresting surface and the complementary arresting surface create a positive engagement and prevent the hammer from falling.

Inventors: Ned Forrest Christiansen
Filing date: 2023-10-03

firearmsafetyhammermechanism

The patent describes a firearm safety feature that utilizes arresting surfaces to prevent the hammer from falling due to spontaneous failures of other components. This system includes a safety mechanism that engages with the hammer, ensuring it cannot impact the firing pin when in the safe position.

Claim 1

1 . A firearm safety feature, comprising: a firing pin; a hammer spring; a hammer biased by said hammer spring to rotate in a first direction to impact said firing pin, said hammer including an arresting surface; a sear operative to engage said hammer such that said hammer is prevented from rotating toward said firing pin; a trigger operative to disengage said sear from said hammer, allowing said hammer to rotate in said first direction toward said firing pin; a safety switchable between a safe position and a firing position, a portion of said safety positioned to prevent said sear from disengaging said hammer when said trigger is depressed; and wherein said safety includes a complementary arresting surface; and said arresting surface and said complementary arresting surface become positively engaged under influence of said hammer spring when said safety is in said safe position and said hammer rotates in said first direction, preventing said hammer from impacting said firing pin. a firing pin; a hammer spring; a hammer biased by said hammer spring to rotate in a first direction to impact said firing pin, said hammer including an arresting surface; a sear operative to engage said hammer such that said hammer is prevented from rotating toward said firing pin; a trigger operative to disengage said sear from said hammer, allowing said hammer to rotate in said first direction toward said firing pin; a safety switchable between a safe position and a firing position, a portion of said safety positioned to prevent said sear from disengaging said hammer when said trigger is depressed; and wherein said safety includes a complementary arresting surface; and said arresting surface and said complementary arresting surface become positively engaged under influence of said hammer spring when said safety is in said safe position and said hammer rotates in said first direction, preventing said hammer from impacting said firing pin.

Google Patents

https://patents.google.com/patent/US12492876

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12492876