Patent ID: 6932229

Claim:
A container closure system comprising: a container having a vertical axis and a substantially oval-shaped opening in one end thereof, said opening having a major axis, a minor axis, and an outer peripheral rim, a cap having a top wall and a skirt depending from said top wall, said skirt having an inner surface of substantially rectangular cross-section, said skirt defining an interior surface of said cap, said interior surface including a plurality of rim-engaging members; said outer peripheral rim including cap-engaging portions at the major and minor axes of said outer peripheral rim, each of said plurality of rim-engaging members having a longitudinal axis parallel to said rim; said rim and said plurality of rim-engaging members being in an engaged relationship when said cap is in a closed position over the opening in the container, and wherein said rim and said plurality of rim-engaging members will be in a disengaged relationship when said cap only is twisted less than 45° with respect to the vertical axis of said container, thereby releasing said cap from said container.