Patent ID: 6056326
Filing Date: 2000-05-02
Classification: F16L

Abstract:
A tube coupling comprising:a coupling body having a throughway open at one end to receive an end portion of a tube, and having an internal cam surface tapering towards said open end in which a collet is located for locking said tube in the coupling body by engagement with said tapered cam surface, and having stop means to limit entry of said collet into said throughway, said coupling body having a main body, said main body including said throughway to receive said end portion of the tube and including said stop means to limit insertion of said collet, said coupling body having a cap in screw-threaded engagement with said main body, said cap including said open end to said throughway and said tapered cam surface; andfirst indexing means on said cap and second indexing means on said main body, said first and second indexing means moveable relative to one another and engaging one another in first and second positions to provide resistance to movement through said first and second positions, whereby in said first position a tube may be inserted and, by depressing said collet into said coupling body, said tube may be released from said coupling body, and in said second position said collet is engaged with said stop means to prevent said collet from being depressed into said coupling body to release said tube.