Patent ID: 6616196
Filing Date: 2003-09-09
Classification: F16L,Y10T

Abstract:
A coupling with a safety breaking device for transporting fluids via a fluid line comprising:a tubular housing connected to the fluid line; a locking element comprising a plurality of expandable collet jaws; a connector nipple formed to engage with said collet jaws; a piston having first and second oppositely directed annular surfaces, said piston being slidably mounted in and guided in at least one sleeve on the inner surface of the housing, said piston and said housing defining an annular pressure-tight, sealed chamber therebetween, whereby said housing is slidable relative to said piston against a closing direction of the coupling to release the engagement of the locking element wherein the effective surface area of the first piston annular surface corresponds to the sum of the surface areas of oppositely facing annular surfaces so as to provide pressure force equalization; and a compression spring mounted within said annular chamber and in contact with at least one of said piston annular surfaces, whereby said piston is biased against the closing direction by said spring to set a safety breaking force.