Patent ID: 8288692
Filing Date: 2012-10-16
Classification: A61F

Abstract:
1. A portable warmer, comprising: a casing having a receiving compartment; a warmer bag comprising a bag body defining a fluid cavity therein, and a heat exchanging fluid sealed and contained in said fluid cavity of said bag body; a heating arrangement comprising a power cable having a power outlet extended out of said casing for electrically connecting with an external power source and a power adapter extended into said receiving compartment, an electric terminal provided at said bag body, and a heating element which is supported in said fluid cavity and is electrically coupled with said electric terminal, wherein when said warmer bag is disposed in said receiving compartment, said power adapter of said power cable is detachably and electrically coupled with said electric terminal for electrically connecting said heating element with said external power source so as to heat up said heat exchanging fluid at a predetermined usable temperature; and a safety arrangement electrically coupling with said heating arrangement, wherein when said heat exchanging fluid is heated above said usable temperature, said safety arrangement automatically cuts off an electrical connection between said heating element and said external power source for preventing said heat exchanging fluid from being overheated; wherein said warmer bag is made of flexible material that said warmer bag seals and contains said heat exchanging fluid in a stretchable manner, wherein when said heat exchanging fluid is at said usable temperature, said heat exchanging fluid expands its volume in comparison with said heat exchanging fluid at a normal room temperature, wherein said safety arrangement comprises a contact switch provided at said casing to cut off said electrical connection between said heating element and said external power source when said heat exchanging fluid is heated at said usable temperature; wherein said casing comprises a base housing having a supporting platform for said warmer bag supporting thereon and a supporting shaft upwardly extended from said supporting platform, and a pivot arm having a pivot end pivotally coupling at a top end of said supporting shaft and a contacting end sitting on top of said warmer bag, wherein said contact switch provided at said casing to cut off said electrical connection between said heating element and said external power source when said heat exchanging fluid is heated at said usable temperature.