| 摘要 |
A device for loosening a metal screw cap is disclosed. A housing able to fit over the screw cap of a jar, bottle, or other container has an inner and an outer wall defining a chamber therebetween. An element for heating the metal screw cap are provided in the chamber, preferably a magnetizing coil wound around an outside surface of the inner wall which can induce high currents in the cap, thus loosening the cap for easy removal by hand or with the aid of the device.
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