Electric appliance with a PTC heating member and a method of operating same
AssigneeHalo, Inc.
InventorsDaniel Kee Hung Chang, Rhoda Chor Man Yue
Life of this patent
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Abstract
There is disclosed an electric appliance (100, 200, 300, 400, 500, 600, 700, 800) with a positive temperature coefficient (PTC) heater (102, 202, 302, 506, 702) and a number of batteries (106, 206, 308, 406, 508, 606, 708, 806), in which the PTC heater (102, 202, 302, 506, 702) is adapted to be powered by the batteries (106, 206, 308, 406, 508, 606, 708, 806) and an outside electric power source, and the PTC heater (102, 202, 302, 506, 702) is adapted to be powered by the outside electric power source when the electric appliance (100, 200, 300, 400, 500, 600, 700, 800) is started, and to be subsequently powered by the batteries (106, 206, 308, 406, 508, 606, 708, 806).
Claims41
An electric appliance with a positive temperature coefficient (PTC) heating member and at least a first electric power source, wherein said PTC heating member is adapted to be powered by said first electric power source and at least a second electric power source, characterized in that said PTC heating member is adapted to be powered by said second electric power source when said electric appliance is started, and to be subsequently powered by said first electric power source.
A method of operating an electric appliance with a positive temperature coefficient (PTC) heating member and at least a first electric power source, including steps (a) of powering said PTC heating member by at least a second electric power source;
- (b) powering said PTC heating member by said first electric power source, characterized in powering said PTC heating member by said second electric power source when said electric appliance is started, and powering said PTC heating member by said first electric power source subsequently.
Dependencies are inferred from the claim text.