Quick-connect magnetic couplings

Claim 1

A COUPLING FOR USE IN A PRESSURE LINE COMPRISING MALE AND FEMALE MEMBERS, AXIAL FACES ON EACH OF SAID MEMBERS, SAID MALE MEMBERS HAVING A REDUCED CYLINDRICAL PORTION PROJECTING FROM SAID AXIAL FACE, SAID REDUCED CYLINDRICAL PORTION BEING RECEIVED IN A CO-OPERATING BORE IN SAID FEMALE MEMBER WHEN SAID MEMBERS ARE COUPLED, EACH OF SAID AXIAL FACES HAVING A RECESS THEREIN, A RING MAGNET IN EACH OF SAID RECESSES, MEANS TO SECURE SAID MAGNETS IN SAID RECESSES, SAID MAGNETS BEING ENGAGED EACH WITH THE OTHER WHEN SAID MALE AND FEMALE MEMBERS ARE BROUGHT INTO COUPLING RELATIONSHIP, EACH OF SAID MAGNETS HAVING A PLURALITY OF MAGNETIC FIELDS WITH THE OPPOSED MAGNETIC FIELDS OF THE ENGAGEABLE PORTIONS BEING OF OPPOSITE POLARITY WHEN SAID MEMBERS ARE COUPLED AND FREELY ROTATABLE TO A POSITION OF LIKE POLARITY TO BE EASILY UNCOUPLED, SAID MAGNETS EXERTING A PREDETERMINED HOLDING A FORCE TO KEEP THE MEMBERS IN COUPLED RELATIONSHIP WITH AN AREA ON THE END OF SAID CYLINDRICAL PORTION EXPOSED TO THE LINE PRESSURE SERVING TO EXERT TO FORCE TO UNCOUPLE SAID MEMBERS WHEN THE LINE PRESSURE EXCEEDS THE PREDETERMINED HOLDING FORCE OF SAID MAGNETS.