Emergency power supply for cellular telephone
OwnerWilliam John McCartneyinventor
Life of this patent
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Abstract
An electrochemical emergency power supply for a cellular telephone otherwise having a main battery. The emergency power supply, once activated, provides the cellular telephone with power for operation of the cellular telephone for at least a predetermined duration. The emergency power supply is an emergency cell that is selectively activated by the cellular telephone user, preferably through the exposure of the emergency cell to ambient air, when needed. The preferred emergency cell is an oxidizing zinc-air electrochemical cell that is held in a hermetically-sealed compartment which is selectively unsealed to activate the emergency power supply.
Claims6
An electrochemical emergency power supply for a cellular telephone having a main battery, the emergency power supply comprising an emergency cell that is in connection with one or more terminals through which the main battery provides power to the cellular telephone, and the emergency cell is selectively activated by a user to provide sufficient power for operation of the cellular telephone for at least a predetermined duration, wherein:
- the main battery is in a battery housing, and the battery housing includes a separate hermetically-sealed compartment;
- and
- the emergency cell is held within the hermetically-sealed compartment, the emergency cell generating a current upon the cell being exposed to ambient air, wherein the hermetically-sealed compartment is selectively unsealed to activate the emergency cell to power the cellular telephone.
Dependencies are inferred from the claim text.