| 摘要 |
A container closure comprising a cap (2) having a skirt (4) of substantially rectangular cross-section is provided. Disposed in a central location of each internal surface of the skirt are substantially coplanar rim-engaging members. The container (3) has a neck portion (12) terminating in an outer peripheral rim (8) surrounding an oval-shaped opening (7) in one end of the container. Cap-engaging portions on the outer portion of the peripheral rim engage with the rim-engaging members disposed on the skirt internal surface when the cap is in a closed position over the container opening. The rim-engaging members can be in the form of small ridges or grooves and can engage with cap-engaging portions formed by small ribs. Alternatively, when in the form of small ridges, rim-engaging members can engage with cap-engaging portions in the form of a small edge extension around the outer portion of the peripheral rim. The cap may be placed into a closed position on the container by aligning the edge of the skirt with a similarly configured edge of the container body and "snapping" the rim-engaging members on the skirt into an engaged relationship with the cap-engaging portions on the peripheral rim. Twisting the cap slightly with respect to a vertical axis of the container disengages the rim-engaging members and the cap-engaging portions to release the cap to an open position for removal from the container.
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