Containers with variable volume
AssigneeAmcad Holdings Limited
InventorAlan Mark Crawley
Life of this patent
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Abstract
A container of variable volume includes an inner flexible member substantially enclosed in a number of interlocking outer sleeves. The volume of the container can be varied by moving at least one outer sleeve relative to another outer sleeve. The outer sleeves are moved to vary the volume of the container by rotating screw-threaded outer sleeves, moving an outer sleeve relative to another by a ratchet, or by using a multi-level bayonet type connection.
Claims19
A variable volume container and cap assembly, the container including means allowing the internal volume thereof to be varied and the cap including a closure and skirt, the skirt having a float and a button assembly arranged so that when the volume of the container is decreased and a flowable material in the internal volume reaches the float, the float gradually shuts off a passage between an outer edge of the skirt and an inner surface of the closure, the air escaping through the passage between the outer edge of the skirt and the inner surface of the closure.
A container and cap assembly according to claim wherein the container includes an inner flexible member substantially enclosed in a number of interlocking sleeves wherein a volume of the inner flexible member is varied by moving at least one outer sleeve relative to another outer sleeve, and adjacent outer sleeves are inseparable.
Dependencies are inferred from the claim text.