Liquid container and dropper assembly

Claim 1

IN COMBINATION, TO DISPENSE LIQUID, (A) A BOTTLE HAVING A MAIN CHAMBER AND (B) A CAP; (A) SAID CAP INCLUDING: (1) SIDE WALLS HAVING A DISTAL END AND A PROXIMAL END, AND A HEAD OF RESILIENT MATERIAL INTERMEDIATE SAID ENDS, (2) A FLEXIBLE DIAPHRAGM HAVING A CENTRAL HOLE SPACED FROM SAID HEAD AND SPANNING SAID WALLS TO DEFINE A COMPRESSION CHAMBER BETWEEN THE WALLS, HEAD AND DIAPHRAGM AND SAID DIAPHRAGM INCLUDING A DEPENDING SKIRT PORTION, AND (3) AN AXIALLY EXTENDING PIPETTE TYPE DROPPER NESTED IN THE SKIRT DEPENDING FROM THE CAP AND COMMUNICATING THROUGH SAID HOLE WITH THE COMPRESSION CHAMBER; (B) SAID BOTTLE HAVING A THREADED NECK AND SAID PROXIMAL END OF THE SIDE WALL HAVING MATED THREADS OF A CORRESEPONDING AXIAL LENGTH TO THE THREADS OF THE NECK; (C) THE NECK OF SAID BOTTLE HAVING AN INVERTED DOME SHAPED SEATING SURFACE WHICH PARTIALLY ROOFS THE MAIN CHAMBER AND WHICH HAS A CENTRAL OPENING THERETHROUGH; (D) SAID DIAPHRAGM OVERLYING AND NESTING IN THE SEATING SURFACE WHEN THE CAP AND BOTTLE ARE IN THREADED ENGAGEMENT IN A BIASED ATTITUDE SO THAT THE VOLUME OF THE COMPRESSION CHAMBER IS REDUCED RELATIVE TO THE VOLUME WHEN THE CAP AND BOTTLE ARE SEPARATED FROM ONE ANOTHER SO THAT THE SAME VOLUME OF AIR IN THE COMPRESSION CHAMBER IS DISPLACED INTO THE MAIN CHAMBER THROUGH THE DROPPER EACH TIME THE CAP AND BOTTLE ARE MATED, AND EACH TIME THE CAP AND BOTTLE ARE SEPARATED SUBSTANTIALLY THE SAME AMOUNT OF FLUID IS DISPLACED INTO THE DROPPER AND MAY BE EJECTED THEREFROM ON RELATIVE MOVEMENT OF THE DIAPHRAGM AND HEAD TO CONTRACT THE COMPRESSION CHAMBER.