Vented Fluid Line Coupling for Safe Pressure Release

The coupling is divided into two separate parts: a male coupling part integrated into one fluid line and a female coupling part integrated into the other fluid line. This segmentation allows each part to be simple in structure while together providing a strong, tool-free connection. The male part includes a protruding coupling element that inserts into the female part's recess, eliminating the need for complex assembly tools.

The male coupling part is designed to insert into and nest within the female coupling part. The male part's outer diameter is smaller than the female part's inner diameter, allowing one coupling to be contained within the other during connection. This nesting approach creates a compact joint without requiring additional external fastening components.

By separating the coupling into male and female parts that connect end-to-end, the fluid flow path remains open and unobstructed. The coupling connection occurs at the junction point without blocking the internal flow passage, maintaining the full flow diameter throughout the connection.

Instead of having the coupling block the flow path (as in traditional couplings where the connection mechanism obstructs the bore), this invention inverts the approach by making the coupling walls themselves form the flow passage. The fluid flows through the coupled connection point without encountering obstructions from the coupling mechanism.

The coupling incorporates a safety mechanism that applies preliminary anti-action by maintaining a mechanical lock between the male and female coupling parts even after the threaded connection is loosened. This lock prevents the sudden release and whipping motion of the fluid line, counteracting the harmful effect before it can occur during disconnection under pressure.

The coupling design includes a controlled release mechanism that cushions the energy release during disconnection. Instead of allowing uncontrolled whipping motion, the mechanism provides a gradual, controlled separation that dissipates the pressure energy safely, preventing injury to operators working with pressurized fluid lines.

The coupling's safety mechanism is self-service in that it automatically engages and locks when the male and female coupling parts are connected. No separate lanyard installation or additional safety components are required - the coupling itself provides the safety function through its integrated design, eliminating the need for operator intervention to install safety features.

The safety mechanism is merged with the coupling connection mechanism itself rather than being a separate component. The lock and release features are integrated into the male and female coupling parts, combining the connection and safety functions into a single unified system. This eliminates the need for separate lanyards or additional safety installation steps.