Dual configuration bottle assembly

A bottle assembly comprising:

• a container having an open end, a closed end, a base portion, and a neck together defining a liquid chamber within the container, the neck having a rim defining the open end of the container, the container having a central axis, the neck of the container having a base disposed below the rim of the container, said neck having a diameter that tapers outward as the neck extends upward from its base to the rim of the container;
• a vent assembly positionable at least in part on the rim of the container to permit venting of the container during use and comprising at least one lateral vent extending other than parallel to the central axis of the container when the vent assembly is positioned on the rim of the container, the vent assembly further having a container engagement lip extendable longitudinally within the interior space of the container upon positioning of the vent assembly on the rim of the container, the container engagement lip having an annular bulge extending at least in part radially outward therefrom, the annular bulge being sized for sealing engagement with the neck of the container intermediate the base of the neck and the rim of the container;
• and
• a collar assembly generally defining a closure for the container, the collar assembly configured for releasable engagement with the neck of the container over the open end thereof to retain the vent assembly together with the container.

A bottle assembly comprising:

• a container having an open end, a closed end, a base portion, and a neck together defining a liquid chamber within the container, the neck having a rim defining the open end of the container, the container having a central axis;
• a vent assembly positionable at least in part on the rim of the container to permit venting of the container during use and comprising at least one lateral vent extending other than parallel to the central axis of the container when the vent assembly is positioned on the rim of the container, the vent assembly further having a container engagement lip extendable longitudinally within the interior space of the container upon positioning of the vent assembly on the rim of the container, the container engagement lip having an annular bulge extending at least in part radially outward therefrom, the annular bulge being sized for sealing engagement with the neck of the container, said container engagement lip further comprising an annular notch formed therein immediately adjacent the annular bulge;
• and
• a collar assembly generally defining a closure for the container, the collar assembly configured for releasable engagement with the neck of the container over the open end thereof to retain the vent assembly together with the container.

A bottle assembly comprising:

• a container having an open end, a closed end, a base portion, and a neck together defining a liquid chamber within the container, the neck having a rim defining the open end of the container, the container having a central axis;
• a vent assembly positionable at least in part on the rim of the container to permit venting of the container during use and comprising at least one lateral vent extending other than parallel to the central axis of the container when the vent assembly is positioned on the rim of the container, the vent assembly further having a grip tab accessible when the vent assembly is positioned on the rim of the container to facilitate gripping by a user to remove the vent assembly from the container;
• and
• a collar assembly generally defining a closure for the container, the collar assembly configured for releasable engagement with the neck of the container over the open end thereof to retain the vent assembly together with the container.