Electric charger
First Claim
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1. An automatic electric charger for charging small-sized batteries, which comprises:
- an inner power source battery capable of producing a higher voltage than the small-sized battery to be charged;
a casing;
at least one pocket in said casing for accomodating said battery to be charged;
a timer;
a motor driving said timer;
a cam mechanism driven by said timer;
graduated dial means for presetting said timer;
a timing cycle circuit including said inner power source battery and said motor during which said inner power source battery drives said motor for a predetermined fixed total cycle period;
a predischarging cycle circuit which is operative for a predetermined fixed time period of said timer upon actuation of said timer; and
a charging cycle circuit which is operative for a predetermined variable time period of said timer upon termination of said discharging time period for effecting the charging operation on said battery said predetermined fixed total cycle period being at least equal to the combination of said discharging time period and said charging time period.
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Abstract
There is described a charger and related devices, the charger being capable of charging batteries uniformly to a predetermined level by adjusting the residual electric amounts in the respective batteries to a uniform level prior to the charging operation, thereby avoiding overcharging of a particular battery or batteries. The charger ensures that a number of batteries be charged in a uniform electric amount or up to a predetermined level to preclude inverse charging of an undercharged battery or batteries which occurs when a number of differently charged batteries are used in series.
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Citations
14 Claims
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1. An automatic electric charger for charging small-sized batteries, which comprises:
- an inner power source battery capable of producing a higher voltage than the small-sized battery to be charged;
a casing;
at least one pocket in said casing for accomodating said battery to be charged;
a timer;
a motor driving said timer;
a cam mechanism driven by said timer;
graduated dial means for presetting said timer;
a timing cycle circuit including said inner power source battery and said motor during which said inner power source battery drives said motor for a predetermined fixed total cycle period;
a predischarging cycle circuit which is operative for a predetermined fixed time period of said timer upon actuation of said timer; and
a charging cycle circuit which is operative for a predetermined variable time period of said timer upon termination of said discharging time period for effecting the charging operation on said battery said predetermined fixed total cycle period being at least equal to the combination of said discharging time period and said charging time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- an inner power source battery capable of producing a higher voltage than the small-sized battery to be charged;
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13. An automatic electric charger for charging small-sized batteries, which comprises:
- an inner power source capable of producing a higher voltage than the small-sized battery to be charged;
a casing;
at least one pocket in said casing for accomodating said battery to be charged;
a timer;
a cam mechanism driven by said timer;
graduated dial means for presetting said timer;
a timing cycle circuit including said inner power source and said timer which is operative for a predetermined fixed total cycle period of said timer;
a predischarging cycle circuit which is operative for a predetermined fixed time period of said timer upon actuation of said timer; and
a charging cycle circuit which is operative for a predetermined variable time period of said timer upon termination of said discharging time period for effecting the charging operation on said battery said predetermined fixed total cycle being at least equal to the combination of said dicharging time period and said charging time period and, wherein said casing includes a lid for covering said pocket, and means operatively connecting said lid to said timer for the automatic ejection of the charged battery from said pocket upon termination of the charging cycle and upon automatic opening thereof. - View Dependent Claims (14)
- an inner power source capable of producing a higher voltage than the small-sized battery to be charged;
Specification