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US 2004/0164710 A1Published application
Battery charging apparatus
AssigneeThomson Licensing
InventorJames Thomas McNeill
Life of this patent
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Abstract
A load, such as a cordless telephone handset, is powered by a rechargeable battery. The battery is recharged, when the load is not in use, by a battery charger which is controlled by a usage timer which totals the amount of time that the load has drawn power from the battery since the last recharging cycle. The usage timer causes operation of the battery charger to be inhibited until after a predetermined cumulative use.
Claims6
A battery charging apparatus comprising:
- a) a rechargeable battery;
- b) an intermittent load energized by said battery;
- c) a timer coupled to said load, said timer generating a signal representative of elapsed time of loading of said battery by said load;
- d) means for charging said battery;
- and
- e) means for controlling said battery charging means in response to the signal generated by said timer.
3 more elements
Dependencies are inferred from the claim text.