Two piece reversible child resistant closure

A reversible child resistant closure for use with a container comprising a neck and an engaging means, the closure having a child resistant mode when applied to the container in a first child resistant orientation and having a non-child resistant mode when applied to the container in a second non-child orientation, the closure comprising:

• An outer cap comprising a first circumferential sidewall extending from a top edge to a bottom edge, and an inward depending wall segment connected to said first circumferential sidewall and forming an annular channel therebetween, said first circumferential sidewall having an inner surface comprising a ridge disposed about the bottom edge, a non-child resistant engaging means for rotateable engagement with an engaging means of the container, and said inward depending wall segment comprising a first child resistant engaging means comprising a series of angular abutments extending from the lower edge of the inward depending wall segment:
• and
• an inner cap comprising an upper surface, a second circumferential sidewall extending axially from said upper surface through a closure plane and forming a first annular lip below the closure plane inside a third circumferential sidewall that is connected to said second circumferential sidewall at said closure plane, wherein said third circumferential sidewall extends above and below the closure plane and has a first inner surface below the closure plane provided with a second child resistant engaging means for rotateable engagement with the engaging means of the container, and above the closure plane, the third circumferential sidewall provides a second annular lip for engagement with annular channel on the outer cap;
• and radially disposed from said second annular lip, adjacent the closure plane, is a third child resistant means having a plurality of angular abutment surfaces complementary to the series of angular abutments on the outer cap,
• the inner cap being coaxially positioned and nested within the outer cap and axially movable between the first child resistant engaging means of the outer cap and the ridge at the bottom edge of the outer cap such that the plurality of angular abutment surfaces of the inner cap can engage the series of angular abutments of the outer cap upon rotation of the outer cap to rotate the inner cap in a closing direction and in the absence of an axial force, cam over and past the series of angular abutments of the outer cap upon rotation of the outer cap member in an opening direction to prevent rotation of the inner cap.