Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1983-12-12
1985-08-20
Hickey, R. J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
307 10BP, 320 13, 361187, 362183, H02H 718, H02J 700
Patent
active
045366950
ABSTRACT:
A discharging protection device for battery-operated portable electric lights includes a relay circuit having a normally-open contact and a load coil coupled in parallel with the light bulb and the negative terminal of the rechargeable battery set of the portable electric light, a normally-open push-button switch connected to the positive terminal of the rechargeable battery set at one end and to the stationary part of the normally-open contact of the relay circuit at the other, and a normally-closed push-button switch linked between the positive terminal of the rechargeable battery set and the movable part of the normally-open contact of the relay circuit; thereby, when the electric light equipped with this invention is carelessly left in discharging condition, the rechargeable battery set can be safely protected from being damaged by overdischarging.
REFERENCES:
patent: 3648145 (1972-03-01), Meyer et al.
patent: 4005344 (1977-01-01), Gaind et al.
patent: 4132942 (1979-01-01), Yamamoto
patent: 4342953 (1982-08-01), Collins
"Remote Battery Cutoff", Popular Science, Jan., 1974, p. 26.
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