US 6,616,196 B1Granted

Coupling having means which prevent separation

OwnerErwin Weh, Wolfgang Wehinventors

Life of this patent

Estimating the term…

Loading patent…

Abstract

A coupling having means which inhibit separation which is provided for transferring fluid, especially for refueling vehicles. The coupling includes a tubular housing, at least one locking element, in particular, a plurality of expandable collects having an engagement profile for connecting to a correspondingly constructed connection nipple. The coupling also includes a piston, which can be displaced relative to the housing and which can be fixed, especially for being placed on the connection nipple. The piston is subject to the action of a spring opposite of the direction of connection in order to adjust the separation prevention force in relation to the housing of the coupling and is mounted such that it can be displaced opposite of the direction of connection in relation to the locked piston in order to release the engagement of the locking element.

Claims6

Dependent claims

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.

3 more elements

Dependencies are inferred from the claim text.