RAPID-ACTION COUPLING FOR PIPELINES Russian patent published in 2010 - IPC F16L37/12 

FIELD: machine building.

SUBSTANCE: coupling consists of case for part inserted into it and arresting part. Upon introduction of the inserted part into the case, the arresting part travels from a preliminary set extended position into a sliding arresting position. The coupling is equipped with a control part in essence of a C-shape with side arcs. When the arresting part is in preliminary set position, this control part envelopes part of the coupling case. The control part has a foot section. When the arresting part is in a preliminary set position, the foot section adjoins it, and the control part is in a blocked position; the foot section does not engage the arresting part in the arresting position. When the arresting part is in the arresting position the control part can travel in axial direction from the blocked position into position of disassembly when it can be removed from the case of the coupling.

EFFECT: simple control over reliable connection of inserted part with case of coupling.

5 cl, 4 dwg