Drink dispenser for collapsible liquid containers

A drink dispenser, comprising:

• a rigid tubular casing having a first threaded end and an opposite second end;
• a flexible bag having an open end attachable to the second end of the casing such that the rigid casing and the flexible bag cooperatively form a fluid container, wherein the rigid casing and the flexible bag each defines approximately one-half of the fluid capacity of the fluid container and the flexible bag is adapted to extend away from the casing when filled with fluid, and fully collapsed into the casing as the fluid is withdrawn therefrom;
• a base which removably snap-fits to the casing to encapsulate the flexible bag;
• a mouthpiece attachable to the first end of the casing to provide an exit passageway for the fluid within the fluid container, the mouthpiece including a nipple having a one-way valve which prevents air from entering the fluid container;
• and
• a locking ring engaging the second end of the casing for removably securing the flexible bag thereto.

A drink dispenser, comprising:

• a rigid tubular casing having a first threaded end and an opposite second end;
• a flexible bag having an open end attachable to the second end of the casing such that the rigid casing and the flexible bag cooperatively form a fluid container, wherein the rigid casing and the flexible bag each defines approximately one-half of the fluid capacity of the fluid container and the flexible bag is adapted to extend away from the casing when filled with fluid, and fully collapsed into the casing as the fluid is withdrawn therefrom;
• a locking ring engaging the second end of the casing for removably securing the flexible bag thereto;
• a base which removably snap-fits to the casing to encapsulate the flexible bag;
• a mouthpiece attachable to the first end of the casing to provide an exit passageway for the fluid within the fluid container, the mouthpiece including a nipple having a one-way valve which prevents air from entering the fluid container;
• and
• expelling means comprising pressure exerted upon the flexible bag for expelling air between the valve and the fluid within the fluid container.

A drink dispenser, comprising:

• a rigid tubular casing having a first threaded end and an opposite second end;
• a flexible bag having an open end attachable to the second end of the casing such that the rigid casing and the flexible bag cooperatively form a fluid container, wherein the rigid casing and the flexible bag each defines approximately one-half of the fluid capacity of the fluid container and the flexible bag is adapted to extend away from the casing when filled with fluid, and fully collapsed into the casing as the fluid is withdrawn therefrom;
• a base which removably snap-fits to the casing to encapsulate the flexible bag;
• and
• a mouthpiece attachable to the first end of the casing to provide an exit passageway for the fluid within the fluid container, the mouthpiece including a nipple having a one-way valve which prevents air from entering the fluid container;
• wherein a surface of the casing is contoured to provide the air vent between the casing and the attached base.