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Class Information
Number: 320/DIG.22
Name: Electricity: battery or capacitor charging or discharging > Line impedance (e.g., resistor, etc.)
Description:










Sub-classes under this class:

Class Number Class Name Patents
320/DIG.23 Capacitor 6
320/DIG.24 Inductor 20


Patents under this class:

Patent Number Title Of Patent Date Issued
5808443 Battery charging method Sep. 15, 1998
5717311 Fast-charging device for rechargeable batteries Feb. 10, 1998
5703471 Battery protection circuitry for limiting charging parameters of a battery plant Dec. 30, 1997
5689173 Battery pack Nov. 18, 1997
5677612 Lead-acid battery desulfator/rejuvenator Oct. 14, 1997
5670862 Rapid charging technique for lithium ion batteries Sep. 23, 1997
5646504 Magnetically balanced multi-output battery charging system Jul. 8, 1997
5646502 Emergency lighting circuit for shunt-regulated battery charging and lamp operation Jul. 8, 1997
5644211 Malfunction prevention circuit for a battery charger Jul. 1, 1997
5635771 Secondary accumulator charging/discharging for a motor vehicle using a controllable resistor Jun. 3, 1997
5635819 Method of charging a battery Jun. 3, 1997
5557189 Method and apparatus including a current detector and a power source control circuit for charging a number of batteries Sep. 17, 1996
5543702 Alkaline battery charging method and battery charger Aug. 6, 1996
5483144 Passive battery charging system Jan. 9, 1996
5173652 Battery chargers for secondary cells of batteries, which control the thermo response of the charge acceptor Dec. 22, 1992
4994727 Charging circuitry having polarity detecting protection Feb. 19, 1991
4758772 Discharge indicating means for a storage battery Jul. 19, 1988
4755733 Battery charging and cycling devices Jul. 5, 1988
4749934 Intrinsically safe battery circuit Jun. 7, 1988
4746851 Charging set for the regenerative recharging of dry batteries May. 24, 1988
4670700 Battery chargers for secondary cells, and or batteries Jun. 2, 1987
4629964 Battery power source Dec. 16, 1986
4623832 Secondary battery quick-charging circuit Nov. 18, 1986
4621225 Passive transformerless battery charging circuit Nov. 4, 1986
4531084 Power supply with current regulating circuit Jul. 23, 1985
4482856 Battery charger Nov. 13, 1984
4472672 High power factor switching-type battery charger Sep. 18, 1984
4467264 Battery charger with visual charge indicating means Aug. 21, 1984
4460863 Battery charging flashlight circuit Jul. 17, 1984
4441066 Battery charger failure alarm circuit Apr. 3, 1984
4387333 Circuit for charging battery at higher potential Jun. 7, 1983
4350946 Multiple constant current battery charging apparatus Sep. 21, 1982
4311952 Battery charging system Jan. 19, 1982
4240022 Battery charging circuit for portable power tool Dec. 16, 1980
4163934 Methods and apparatus for charging batteries Aug. 7, 1979
4152635 Battery charger May. 1, 1979
4146825 Electric battery powered vehicle Mar. 27, 1979
4140958 Battery charging apparatus Feb. 20, 1979
4134057 Device for enabling an accumulator to be recharged from a source of electrical energy Jan. 9, 1979
4092580 Energizer apparatus for rechargeable flashlight batteries May. 30, 1978
4081739 Circuit for quick charging of batteries Mar. 28, 1978
4035709 Battery charging system Jul. 12, 1977
4031450 Two step solid state battery charger Jun. 21, 1977
4025861 Method and device for charging and heating at low temperature a sealed storage cell battery May. 24, 1977
4006397 Controlled battery charger system Feb. 1, 1977
4004208 Starting aid and reserve light for vehicles Jan. 18, 1977
3970912 Battery charging circuit Jul. 20, 1976
3963976 Pulsed current battery charging method and apparatus Jun. 15, 1976











 
 
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