Airless coupling

Claim 1

A COUPLING ASSEMBLY COMPRISING: A PAIR OF CO-AXIAL VALVE MEMBERS HAVING A PARALLEL END FACES, THE END FACE OF ONE VALVE MEMBER BEING NO LARGER THAN THE END FACE OF THE OTHER VALVE MEMBER; RESPECTIVE HOUSINGS OF THE SAME OUTER DIMENSIONS SURROUNDING THE VALVE MEMBERS, SAID ONE VALVE MEMBER AND ITS HOUSING HAVING COOPERABLE CONICAL SURFACES EXTENDING FROM THEIR ENDS TO PREVENT MOVEMENT OF SAID ONE VALVE MEMBER INWARDLY OF ITS HOUSING, SAID OTHER VALVE MEMBER AND ITS HOUSING HAVING COOPERABLE CONICAL SURFACES EXTENDING FROM THEIR ENDS TO PREVENT MOVEMENT OF SAID OTHER VALVE MEMBER EXTERNALLY OF ITS HOUSING; A SLEEVE SURROUNDING AND SUPPORTING THE HOUSING FOR SAID ONE VALVE MEMBER SO THAT IT IS SLIDABLE IN SAID SLEEVE; MEANS IN THE OTHER HOUSING NORMALLY BIASING SAID OTHER VALVE MEMBER THEREIN TO A POSITION WHEREIN ITS END FACE IS IN THE SAME PLANE AS THE END FACE OF ONE END OF SAID OTHER HOUSING; MEANS IN SAID ONE HOUSING NORMALLY BIASING SAID ONE HOUSING AND SAID ONE VALVE MEMBER THEREIN WITH THE END FACES OF SAID ONE VALVE MEMBER AND ONE END OF SAID ONE HOUSING ARE IN THE SAME PLANE, SAID BIASING MEANS IN EACH HOUSING COOPERATING, UPON PRESSING SAID END FACES TOGETHER AND FORCING ONE AGAINST THE OTHER, TO EFFECT UNITARY MOVEMENT OF SAID HOUSINGS AND VALVE MEMBERS FOR A PREDETERMINED DISTANCE, AND THEN PERMITTING THE VALVE MEMBERS TO REMAIN STATIONARY WHILE THE HOUSINGS MOVE RELATIVE THERETO; AND A SEALING MEMBER IN SAID SLEEVE NORMALLY SURROUNDING AND ENGAGING SAID ONE HOUSING A DISTANCE FROM ITS OUTER END LESS THAN SAID PREDETERMINED DISTANCE, WHEREBY THE HOUSINGS AND THEIR MEMBERS DO NOT UNDERGO RELATIVE MOVEMENT UNTIL SAID MEMBER ENGAGES SAID OTHER HOUSING.