Battery check device for camera

Details Battery check device for camera Battery check device for camera

1989-02-17

1989-09-12

Perkey, W. B.

Communications: electrical

Land vehicle alarms or indicators

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

340636, 324431, G03B 1718, G08B 2100, G01N 2746

Patent

active

048664715

ABSTRACT:
A battery check device for a camera which is capable of accurately making a battery check without being affected by temperature comprises detecting means for detecting the service condition of a battery; comparison means for comparing the detection value obtained by the service condition detecting means with a reference value; informing means for informing the photographer of the service capacity of the battery in response to the output of the comparison means; and changing means for changing the reference value to change thereby the informing state of the informing means according to temperature.

REFERENCES:
patent: 3781658 (1973-12-01), Godshalk
patent: 3991553 (1976-11-01), Bergey et al.
patent: 4027231 (1977-05-01), Lohrmann
patent: 4377787 (1983-03-01), Kikuoka et al.
patent: 4525055 (1985-06-01), Yokoo
patent: 4595880 (1986-06-01), Patil

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