Polarity indicator for battery charger

Details Polarity indicator for battery charger Polarity indicator for battery charger

1977-06-27

1979-03-20

Hickey, Robert J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 48, 339 29B, 340636, H02J 700, H01R 1100

Patent

active

041456483

ABSTRACT:
A polarity indicating system using a light emitting diode is mounted on the clip for a battery charger to provide an indication that the battery charger is properly connected to the battery being charged. In the preferred embodiment, the LED is connected to a test probe mounted in one of the handles of the negative clip and connected in series between the test probe and the positive cable. An alternate embodiment uses the polarity indicating system on battery booster cables.

REFERENCES:
patent: 3258672 (1966-06-01), Godshalk et al.
patent: 3259754 (1966-07-01), Matheson
patent: 3267452 (1966-08-01), Wolf
patent: 3308365 (1967-03-01), St. John
patent: 3387200 (1968-06-01), Godshalk
patent: 3749905 (1973-07-01), Friedman et al.
patent: 3869641 (1975-03-01), Goldberg
patent: 3936121 (1976-02-01), Leinberger
patent: 3939421 (1976-02-01), Barringer et al.
patent: 3947753 (1976-03-01), Gushima et al.
patent: 3967257 (1976-06-01), Hager

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