Patent ID: 8657136

Claim:
A packaging unit comprising: a container adapted to hold contents to be dispensed and having an aperture at an end thereof, the aperture being sized to dispense the contents therethrough; a lid configured to slideably engage the container about the end thereof, the lid being slideable in a first direction between a closed position in which the lid covers the aperture and an open position in which the aperture is at least partially uncovered, wherein the container comprises a lip having a protrusion extending therefrom; wherein the lid comprises: a top wall; a side wall extending from the top wall and including at least one resilient portion capable of being deflected in a direction substantially perpendicular to the first direction so as to disengage the lid from the container when in the closed position such that the lid is capable of sliding in the first direction to the open position; and a post extending from the top wall and being spaced apart from the side wall in a substantially parallel arrangement, the post being configured to engage the protrusion at a first position when the lid is in the closed position so as to limit opening of the lid along the first direction, and the post being further configured such that deflection of the at least one resilient portion displaces the post to a second position wherein the post is disengaged from the protrusion; wherein the protrusion comprises a protrusion blunt surface and a protrusion tapered surface on opposite ends thereof, and the post comprises a post blunt surface and a post tapered surface on opposite ends thereof, wherein the protrusion blunt surface is configured to engage the post blunt surface at the first position; and wherein the lid comprises a linkage connecting the at least one post to the at least one resilient portion of the side wall, the linkage being configured to transmit deflection of the at least one resilient portion to the at least one post so as to be capable of displacing the post to the second position.