Device for warning of vehicle battery deterioration

Details Device for warning of vehicle battery deterioration Device for warning of vehicle battery deterioration

1997-04-15

1998-10-06

Lefkowitz, Edward

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340636, 340660, 324433, G08B 2100

Patent

active

058183337

ABSTRACT:
A device for warning of deterioration of a starter mechanism in which a motor is powered by a battery to start a combustion engine. The device includes a timer responsive to activation of the starter mechanism to time a given time interval, a voltage level tester for measuring a voltage across the battery at the end of the given time interval, a counter for maintaining an incremental count of occasions on which the voltage is below a given level, and an alarm unit for providing a warning signal when the incremental count exceeds a given number. In a preferred embodiment, the voltage level tester measures the voltage across the battery continuously, and the timer identifies activation of the starter mechanism by a corresponding sudden drop in voltage across the battery.

REFERENCES:
patent: 3997888 (1976-12-01), Kremer
patent: 4193026 (1980-03-01), Finger et al.
patent: 4237412 (1980-12-01), Randlof
patent: 4943777 (1990-07-01), DeKamura et al.

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