Electricity: battery or capacitor charging or discharging – One cell or battery charges another
Reexamination Certificate
1999-10-25
2001-09-11
Wong, Peter S. (Department: 2838)
Electricity: battery or capacitor charging or discharging
One cell or battery charges another
C320S132000
Reexamination Certificate
active
06288518
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an emergency supplemental charging device for rechargeable batteries.
2. Description of Related Art
In traditional portable electric appliances, such as radios, portable cassette players, or portable compact computers, the power supply is often provided in the form of a cell or battery pack containing cells rechargeable at least twice, preferably using an A.C. to D.C. converter. Unfortunately, however, use of such converters may be limited by differences in power supply voltage ratings and frequency, differences in socket specifications encountered from one country to another, or because the user forgets to bring the charger with him. As a result, there is a need for an inexpensive but convenient emergency charging device that can be used when the conventional A.C. to D.C. converter cannot be used or is unavailable.
SUMMARY OF THE INVENTION
The primary object of the present invention, therefore, is to provide an emergency supplemental charging device, in which the emergency charging power is in the form of a single-piece single-use cell arranged in a popular configuration. The single-use cell may be packaged in any manner necessary to meet the requirements of specific applications, and is designed to match a secondary cell which serves as the load to be charged. In addition, to enhance the safety features of the target load, additional means such as switches, overcurrent protection circuits, breakers, or current limiters may be incorporated, including an optional current or voltage meter display, or even a central processing unit to control the charging output so that the charging operation may be carried out effectively and safely.
REFERENCES:
patent: 4510431 (1985-04-01), Winkler
patent: 5565756 (1996-10-01), Urbish et al.
patent: 6072300 (2000-06-01), Tsuji
Chen Yang
Yang Tai-Her
Bacon & Thomas
Toatley , Jr. Gregory J.
Wong Peter S.
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