Patent ID: 8302792

Claim:
A child-safety container and closure device comprising: a container comprising: an open top end and a closed base; a sidewall extending upward from the closed base; a neck extending between the sidewall and the open top end, the neck comprising: an upper annular wall extending downward from the open top end, the upper annular wall having an outer screw thread; and, a lower annular wall having a first set of outer serrations and a second set of outer serrations; a cap comprising: a closed top for closing the open top end of the container, the closed top having an outer edge and a bottom surface; an outer cylindrical skirt extending downward from the outer edge of the closed top, the outer cylindrical skirt comprising: an upper skirt portion having a first diameter and an inner screw thread, the upper skirt portion being rigid and non-deformable; a lower skirt portion having a second diameter, a bottom end, two diametrically opposed outer gripping surfaces, and inner child-safety serrations, each inner child-safety serration having a ramp surface connected to a steep declining surface, the lower skirt portion being deformable; a bottom end; and, wherein the first diameter is less than the second diameter; an interior housing extending downward from the bottom surface of the closed top; a first-opening indicator collar, connected to the bottom end of the outer cylindrical skirt by breakable bridges, the first-opening indicator collar having inner tamper-evidence serrations, each tamper-evidence serration having a ramp surface connected to a steep declining surface; wherein the inner child-safety and tamper-evidence serrations oppose the first and second sets of outer serrations on the neck of the container, and the first and second sets of outer serrations: (i) slide along the ramp surfaces of the inner child-safety and tamper evidence serrations when closing the container, and (ii) lock against the steep declining surfaces of the inner child-safety and tamper evidence serrations when opening the container, wherein double centripetal lateral symmetrical pressure exerted on the two diametrically opposed gripping surfaces deforms the lower skirt portion and the first opening indicator collar causing the tamper-evidence serrations to cooperate with the second set of outer serrations on the neck of the container.