Squeeze and turn child resistant package

A squeeze and turn child resistant package comprising a plastic container having a finish with external threads means,

• a plastic closure having a base wall and an outer peripheral flexible wall depending from said base wall,
• said peripheral wall of said closure having an internal thread means thereon complementary to said thread means on said finish,
• said closure having opposed finger engaging portions on the outer surface of said peripheral flexible wall,
• said peripheral flexible wall of said closure having an internal surface with spaced flexible chordal lugs,
• each said chordal lug being attached along an axial area of said internal surface of said peripheral flexible wall,
• each said chordal lug being spaced circumferentially from each finger engaging portion,
• each said chordal lug having a free edge extending circumferentially in the direction of removal of the closure,
• each said axial area of each chordal lug being spaced intermediate a finger engaging portion and the free edge of said respective chordal lug,
• said container finish having diametrically opposed radially extending abutments spaced below said thread means,
• each said abutment having a radially and axially engaging abutting surface,
• said abutting surfaces being positioned circumferentially with respect to said finger engaging portions when said closure is fully applied on said finish,
• said finish of said container including an integral radial projection adjacent said radial abutting surface of said abutment,
• each said radial projection having a lesser radial extent than the associated abutment,
• each said radial projection including a chordal surface intersecting said abutting surface at a right angle,
• each said radial projection having a circumferential outwardly arcuate surface extending to the chordal surface,
• such that when the closure is rotated to apply the closure to the container, the chordal lugs flex past the abutments, and when fully applied, the free end of each said chordal lug is positioned adjacent the intersection of said abutting surface and said chordal surface of said radial projection preventing the closure from being unscrewed, such that when the closure is to be removed, the wall is squeezed at finger engaging portions causing the chordal lugs to be moved outwardly beyond the abutment surfaces so that the closure can be unthreaded, and such if an attempt is made to remove the closure without flexing the wall, the free edges of said chordal lugs will engage the intersection of the axial abutting surfaces on the finish and the chordal surfaces on the radial projections on the finish causing the wall to flex outwardly and causing the chordal lugs to change their angular relationship further forcing the ends of the chordal lugs into the intersection.