Receptacles – Compartmented container – Cells
Reexamination Certificate
2000-01-05
2001-12-18
Castellano, Stephen (Department: 3727)
Receptacles
Compartmented container
Cells
C220S723000, C220S906000
Reexamination Certificate
active
06330955
ABSTRACT:
BACKGROUND OF THE INVENTION
Description of Prior Art
Containers filled with freezable liquid for use as refrigeration or temporary cooling, are available at most retail outlets today. Described as “reusable ice substitutes”, they are either soft flexible plastic envelopes or semi-rigid plastic blocks. The soft plastic envelopes are weak and insecure and can carry biological contaminants. The plastic block has a thick plastic container which insulates the frozen liquid from the space to be cooled, bulges and deforms when frozen, and can carry biological contaminants on the plastic exterior.
Objects and Advantages
Containers that are commonly used for liquid storage, are not normally suited to the storage of a freezable liquid. The containers burst or deform from the expansion and contraction of the contents. The object of this invention is to adapt the commonly used containers for the storage of freezable liquids for use in temporary cooling or refrigeration. The primary advantage is that normal manufacturing, filling, and sealing methods and machinery can be utilized. Secondary advantages include: convenient shapes, increased durability of the exterior, increased heat transfer rates, and resistance to biological contaminants.
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