Patent ID: 8602056
Filing Date: 2013-12-10
Classification: F16L,Y10T

Abstract:
1. A coaxial coupling comprising: a pressure feeding part and a pressure receiving part which are coupleable to each other, the pressure feeding part and the pressure receiving part each having an inner passage and a concentric outer passage, wherein the inner passage of the pressure feeding part is fluidly connected to the inner passage of the pressure receiving part and the outer passage of the pressure feeding part is fluidly connected to the outer passage of the pressure receiving part in the coupled state of the coupling; a by-pass valve, in the pressure feeding part, that guides the fluid flow internally from the inner passage to the outer passage thereof in a non-coupled state of the coupling; an activator in the pressure receiving part for activating the by-pass valve during coupling of the two parts; and an outer passage connecting valve that connects the outer passage of the pressure feeding part with the outer passage of the pressure receiving part upon coupling of the pressure feeding part and the pressure receiving part, wherein the coaxial coupling is configured such that