Battery status indicator

• US 3,877,001 A
• Filed: 01/14/1974
• Issued: 04/08/1975
• Est. Priority Date: 01/14/1974
• Status: Expired due to Term

• Current Assignee: Henry A. Bogut, Jerome C. Leonard
• Original Assignee: Henry A. Bogut, Jerome C. Leonard
• Inventors: Bogut, Henry A., Leonard, Jerome C.
• Primary Examiner(s): Caldwell, John W.
• Assistant Examiner(s): Myer, Daniel
• Application Number:
  US05/432,919
• Time in Patent Office: 449 Days
• Field of Search: 340/249 325/185,186,492
• US Class Current: 340/527
• CPC Class Codes: G01R 19/16542 for batteries charge condition monitoring in G01R31/36
• CPC Class Codes: G01R 31/3646 for indicating electrical conditions or variables, e.g. visual or audible indicators

Abstract

A semiconductor switch connecting the battery to a light emitting diode, operative for a predetermined period of time in response to the operation of a transceiver power switch if the battery is above a predetermined value and operative in response to the operation of a transmit switch in a constant "on" mode if the battery voltage is above the predetermined value and in a periodic mode if the battery voltage is low.

Claims

1. Battery status indicator means comprising:

a. an indicating device providing an indication when a suitable voltage is supplied thereto;

b. switching means coupled to said indicating device and to a battery and operating to couple said indicating device to the battery during the application of an actuating signal to said switching means;

c. timing means coupled to said switching means for supplying an actuating signal of a predetermined duration to said switching means upon connection of the battery to said timing means when the battery voltage is at least a predetermined value;

d. comparing means coupled to said switching means and the battery for comparing the battery voltage to a predetermined value and applying an actuating signal to said switching means when the battery voltage is at least the predetermined value; and

e. periodic means coupled to said comparing means and the battery for providing a periodic actuating signal through said comparing means to said switching means when the battery voltage is below the predetermined value.

2. Battery status indicator means as claimed in claim 1 including in addition an on-off switch connecting the battery to the switching means and to the timing means.

3. Battery status indicator means as claimed in claim 1 wherein the indicating device includes a light emitting diode.

4. Battery status indicator means as claimed in claim 2 including in addition a second switch connecting the comparing means and the periodic means to the on-off switch.

5. Battery status indicator means in a battery powered transmitter/receiver comprising:

a. a light emitting diode providing light when a suitable voltage is supplied thereto;

b. a battery;

c. an on-off switch connecting said battery to designated terminals of the transmitter/receiver;

d. a push-to-talk switch connecting other designated terminals of the transmitter/receiver to said on-off switch;

e. switching means coupled to said light emitting diode and said on-off switch and operating to couple said diode to said on-off switch during the application of an actuating signal to said switching means;

f. timing means coupled to said switching means and said on-off switch for supplying an actuating signal of a predetermined duration to said switching means upon connection of said battery through said on-off switch to said timing means when the battery voltage is a predetermined value;

g. comparing means coupled to said switching means and said push-to-talk switch for comparing the voltage of said battery to a predetermined value and applying an actuating signal to said switching means when the voltage of said battery, connected through said push-to-talk and on-off switches, is at least the predetermined value; and

h. periodic means coupled to said comparing means and said battery for providing a periodic actuating signal through said comparing means to said switching means when the battery voltage is below the predetermined value.