Pressure Vessel Boss with Circumferential Ridges

The boss incorporates a curved or inclined peripheral surface with circumferential ridges instead of a flat surface, creating a threaded or screw-thread-like engagement structure that mates with the liner perimeter. This curved geometry provides mechanical interlocking that prevents separation under pressure while maintaining manufacturability through standard molding or machining processes.

The boss is formed as a composite structure integrating the neck, flange, and peripheral surface with circumferential ridges into a single unit that combines structural support with sealing functionality. This integrated composite design eliminates the need for separate sealing elements while ensuring reliable connection under extreme pressure conditions.

The invention merges the sealing function and mechanical interlocking function into a single integrated peripheral surface structure on the boss. The circumferential ridges on the boss's peripheral surface directly engage with the liner perimeter to provide both sealing and mechanical attachment, eliminating the need for separate sealing elements or complex multi-component assembly structures.

The peripheral surface with circumferential ridges serves multiple functions simultaneously: it provides mechanical interlocking to prevent separation, creates sealing contact with the liner perimeter, and distributes stress concentrations. This multi-functional design achieves reliable connection without increasing overall device complexity.

The curved or inclined peripheral surface with circumferential ridges distributes contact stress along a curved path rather than concentrating it at sharp corners or flat interfaces. This curved geometry naturally reduces stress concentrations and prevents material failure while accommodating normal manufacturing tolerances through its distributed contact mechanism.

The design changes the geometric parameters of the boss-perimeter interface by introducing circumferential ridges and curved surfaces, which modify the stress distribution pattern. This parameter change transforms concentrated stress points into distributed stress zones, improving structural integrity without requiring ultra-precise manufacturing.