US12313375 - Open frame revolver with changeable drum

The patent describes an open frame revolver featuring a pivotally connected upper and lower frame, with a drum housing that accommodates a spring assembly and trigger mechanism. It includes various safety and locking mechanisms, as well as a drum that holds multiple cartridge chambers, enhancing its functionality and user safety.

Claim 1

1. An open frame revolver, comprising: an upper frame and a lower frame pivotally connected together at a front of the open frame revolver, wherein the upper frame comprises of a muzzle, a barrel, and a hammer axle housing; a handle removably connected to the lower frame; a drum housing located in a rear end of the open frame revolver, wherein the drum housing comprises un upper drum housing located in the upper frame and a lower drum housing located in the lower frame; a spring assembly located in a cavity of the lower frame; a trigger mechanism located in the cavity of the lower frame, wherein the trigger mechanism through at least one trigger hook is connected to the spring assembly; a tension axle located in the lower frame, wherein the tension axle on one end and through a tension axle hook is connected to the spring assembly, and on the other end, has a female lock; a hammer axle supported by a housing of the upper frame, wherein the hammer axle has a male lock on one end and a hammer head attached to the other end of the hammer axle; a firing tip located on the hammer head; a drum positioned in the drum housing, wherein the drum is pivotally supported by the hammer axle, and the drum has a slotted housing at the radial center of the drum and a plurality of a spaced apart cartridge chambers; a safety lock located in the lower frame; and a frame lock located on the lower frame. an upper frame and a lower frame pivotally connected together at a front of the open frame revolver, wherein the upper frame comprises of a muzzle, a barrel, and a hammer axle housing; a handle removably connected to the lower frame; a drum housing located in a rear end of the open frame revolver, wherein the drum housing comprises un upper drum housing located in the upper frame and a lower drum housing located in the lower frame; a spring assembly located in a cavity of the lower frame; a trigger mechanism located in the cavity of the lower frame, wherein the trigger mechanism through at least one trigger hook is connected to the spring assembly; a tension axle located in the lower frame, wherein the tension axle on one end and through a tension axle hook is connected to the spring assembly, and on the other end, has a female lock; a hammer axle supported by a housing of the upper frame, wherein the hammer axle has a male lock on one end and a hammer head attached to the other end of the hammer axle; a firing tip located on the hammer head; a drum positioned in the drum housing, wherein the drum is pivotally supported by the hammer axle, and the drum has a slotted housing at the radial center of the drum and a plurality of a spaced apart cartridge chambers; a safety lock located in the lower frame; and a frame lock located on the lower frame.

Google Patents

https://patents.google.com/patent/US12313375

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12313375