Customized bottle and closure therefor

A combination of a bottle and a closure, the bottle comprising a neck with an inner circumferential surface defining a throat having a longitudinal axis and having an end face, at least a portion of the end face being inclined with respect to an imaginary plane perpendicular to the longitudinal axis, said closure comprising a head and a cylindrical shank extending from said head and having a longitudinal axis extending through the shank, said shank having a cross-sectional area which is less than that of the head of the closure and less than that of the throat in the neck of the bottle, said shank having an outer circumferential surface, said head having a surface facing toward the shank and having a portion thereof which is inclined with respect to an imaginary plane perpendicular to the longitudinal axis extending through the shank and which is complementary to the inclined surface on the end face of the neck to provide complementary camming surfaces and O-ring frictional sealing means carried by the shank for forming a sealing frictional engagement with respect to the outer surface of the shank and the inner surface of the neck and providing a sealing frictional engagement which is greater than the force which can be applied by a human to the closure for removal of the same until at least a portion of said O-ring means has cleared the inner surface of the neck by relative rotation between the bottle and the closure by coaction of the complementary camming surfaces to thereafter permit removal of the closure by a human hand pulling on the closure to complete opening of the bottle, said frictional sealing O-ring means being comprised of first and second O-rings mounted in spaced apart positions on the shank, each of said first and second O-rings having a diameter, the first O-ring having a larger diameter than the diameter of the second O-ring with the first O-ring being positioned on the shank so that as the closure is rotated by hand with respect to the bottle, the closure is cammed outwardly to extract the first O-ring from engagement with the inner surface of the throat of the neck.

A closure for use with a bottle having a neck with an interior circumferential surface defining a throat with a longitudinal axis and having an end face at least a portion of which is inclined with respect to an imaginary plane perpendicular to the longitudinal axis, the closure comprising a head and a shank in the form of a right cylinder extending from the head and having a cross-sectional area less than that of the head and having a longitudinal axis extending through the shank, said head having a surface facing toward the shank and having a portion thereof which is inclined with respect to an imaginary plane perpendicular to the longitudinal axis of the shank and which is complementary to the inclined surface on the neck, and sealing means mounted on the shank adapted to engage the inner surface of the throat of the neck when the closure is mounted in the neck to establish a seal between the shank and the neck, said sealing means comprising first and second O-rings which are spaced apart on the shank and in which the first O-ring is spaced from the inclined surface of the head that requires a force which is greater than the force which can be applied by a human to the closure for removal of the same until at least a portion of said sealing means has cleared the inner surface of the neck by relative rotation between the bottle and the closure by coaction of the complementary inclined surfaces to thereafter permit removal of the closure by a human hand pulling on the closure to complete opening of the bottle.