Screw-type closure

Claim 1

IN COMBINATION WITH A CONTAINER HAVING A THREADED NECK, A TAMPER-PROOF CLOSURE COMPRISING A CLOSURE CAP AND A SAFETY RING HAVING A FIRST AND SECOND SECTION ADAPTED TO FIT ONTO THE NECK OF THE CONTAINER, SAID FIRST SECTION COMPOSED OF A PLURALITY OF UPPER DISCONNECTED RING MEMBERS ADAPTED TO BE POSITIONED BETWEEN THE CAP AND THE CONTAINER NECK AND EACH OF WHICH IS CONNECTED TO THE SECOND SECTION BY A PLURALITY OF RUPTURABLE WEBS, THE AREA OF CONTACT OF EACH OF SAID WEBS WITH THE FIRST SECTION BEING LARGER THAN THE AREA OF CONTACT BETWEEN SAID WEB AND THE SECOND SECTION, SAID SECOND SECTION WHEN IN OPERATIVE POSITION IS BELOW THE UPPER RING MEMBERS AND THE CAP IS DESIGNED TO GRIDLE THE NECK AND SLIDE AXIALLY THEREON, TWO LOCKING MEANS, A FIRST OF SAID LOCKING MEANS BEING DISPOSED BETWEEN THE CLOSURE CAP AND FIRST RING SECTION WHICH ONLY PERMITS THE CAP TO BE INSERTED OVER AND ONTO THE NECK HAVING A SAFETY RING THEREON THEREBY TO CLOSE THE CONTAINER, THE SECOND OF SAID LOCKING MEANS BEING DISPOSED BETWEEN THE SECOND RING SECTION AND THE CONTAINER NECK AND ACTING TO INHIBIT ROTATION OF THE SECOND RING SECTION AND DOWNWARD AXIAL MOVEMENT OF THE SAID FIRST RING SECTION, THE LOCKING MEANS BETWEEN THE CAP AND RING BEING ACTIVATED AFTER THE CAP HAS BEEN INSERTED OVER THE NECK AND SAID FIRST SECTION OF THE RING TO LOCK THE SAME TO THE CAP AND THE SECOND RING SECTION TO THE NECK, WHEREUPON A SLIGHT MOVEMENT OF THE NECK OF THE CAP TO REMOVE THE SAME WILL RESULT IN RUPTURE OF SAID WEB AND DOWNWARD AXIAL MOVEMENT OF THE SECOND RING SECTION AND HENCE PROVIDE A VISUAL INDICATION OF ANY ATTEMPT TO OPEN THE CLOSURE.