Pistol Barrel with Undulating Cam Surfaces for Synchronized Firing

The patent applies curved/undulating cam surfaces on the barrel instead of straight or simple curved surfaces. The bottom cam surface and top cam surface both feature undulating profiles that interact with corresponding cam follower surfaces on the slide, creating synchronized oscillating motion of the barrel during the firing cycle. This curvature design enables precise timing control of barrel movement relative to the slide, improving feeding and extraction synchronization while preventing jamming.

The patent transforms the barrel from a static component to a dynamically oscillating component. The undulating cam surfaces cause the barrel to oscillate (move up and down) in synchronization with the slide's rearward and forward motion during the firing sequence. This dynamic barrel movement is precisely timed to facilitate case extraction and ammunition feeding, resolving the timing precision issue while maintaining structural simplicity through the cam mechanism.

The patent combines multiple functions into the barrel's cam surfaces. The same undulating bottom and top cam surfaces that create barrel oscillation for jamming prevention also control the timing of case extraction and ammunition feeding. By merging these timing control functions into the barrel's inherent cam surfaces rather than adding separate mechanisms, the design reduces overall system complexity and distributes precision requirements across existing components.

The barrel's cam surfaces serve themselves by using their own undulating geometry to generate the synchronized oscillating motion needed for precise timing. The interaction between the barrel's cam surfaces and the slide's cam follower surfaces creates the required barrel movement automatically during normal operation, without requiring external control mechanisms or additional precision components.