| US 7,475,560 B2 | ||
| Cooling tubes and straws for liquids | ||
| Daniel D. Smolko, Jamul, Calif. (US); and Gregory J. Kevorkian, Temecula, Calif. (US) | ||
| Assigned to Advanced Porous Technologies, LLC, San Diego, Calif. (US) | ||
| Filed on May 16, 2006, as Appl. No. 11/434,610. | ||
| Application 11/434610 is a division of application No. 10/453863, filed on Jun. 03, 2003, granted, now 7,107,783. | ||
| Application 10/453863 is a continuation in part of application No. 10/162119, filed on Jun. 03, 2002, abandoned. | ||
| Application 10/162119 is a continuation of application No. 08/933639, filed on Sep. 19, 1997, granted, now 6,398,048. | ||
| Claims priority of provisional application 60/388609, filed on Jun. 03, 2002. | ||
| Prior Publication US 2006/0201186 A1, Sep. 14, 2006 | ||
| Int. Cl. F28C 1/00 (2006.01) | ||
| U.S. Cl. 62—315 | 17 Claims |
| 1. A drinking tube or straw comprising:
a tubular structure defining a lumen through which a liquid can pass, wherein at least a portion of the tubular structure
comprises a first porous sintered matrix having a first surface and a second surface and wherein the porous sintered matrix
allows for the passage of vapor from the liquid within the lumen of the tubular structure such that pervaporation or evaporation
of the vapor cools the liquid within the lumen of the tubular structure.
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