Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1988-12-27
1990-05-29
Dwyer, James L.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
70 63, H02J 700
Patent
active
049298801
ABSTRACT:
A battery powered electronic lock system includes a battery monitoring feature that detects three states of the lock system battery. These states correspond to three progressively weaker states of the battery. When the battery is in the first state, the lock system operates in normal fashion. When the battery is in the second state, an indicator informs the user, but operation of the lock system otherwise continues in substantially normal fashion. When the battery is in the third state, normal lock operation is curtailed and the remaining battery energy is reserved for the purpose of opening the lock for specially authorized keys.
REFERENCES:
patent: 3857018 (1974-12-01), Stark et al.
patent: 3906447 (1975-09-01), Crafton
patent: 4079605 (1978-03-01), Bartels
patent: 4148012 (1979-04-01), Baump et al.
patent: 4201887 (1980-05-01), Burns
patent: 4353064 (1982-10-01), Stamm
patent: 4411144 (1983-10-01), Aydin
patent: 4439670 (1984-03-01), Basset et al.
patent: 4525805 (1985-06-01), Prosan et al.
patent: 4558175 (1985-12-01), Genest et al.
patent: 4575719 (1986-03-01), Bertagna et al.
patent: 4800255 (1989-07-01), Imran
"EAC-1000 Electronic Access Control System Operational Manual", Supra Products, Inc., Feb. 1, 1985.
Ellson George A.
Henderson Walter G.
Unrein Edgar J.
Dwyer James L.
Supra Products, Inc.
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