Battery discharge indicator

• US 3,349,386 A
• Filed: 03/02/1965
• Issued: 10/24/1967
• Est. Priority Date: 03/02/1965
• Status: Expired due to Term

• Current Assignee: Wilhelm J. Zug
• Original Assignee: Wilhelm J. Zug
• Inventors: Zug, Wilhelm J.
• Application Number:
  US04/436,515
• Time in Patent Office: 966 Days
• US Class Current: 340/636.15
• 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

Claims

1. A BATTERY DISCHARGE INDICATOR COMPRISING A PAIR OF TERMINALS ADAPTED TO BE CONNECTED ACROSS THE TERMINALS OF THE BATTERY UNDER SUPERVISION, INDICATING MEANS CONNECTED IN SERIES WITH A CONTROLLED SWITCHING ELEMENT ACROSS SAID TERMINALS, FIRST CIRCUIT MEANS INCLUDING VOLTAGE REGULATING MEANS CONNECTED TO SAID SWITCHING ELEMENT AND SAID TERMINALS AND RESPONSIVE TO THE DIFFERENCE BETWEEN THE VOLTAGE ACROSS SAID TERMINALS AND THE VOLTAGE ACROSS SAID REGULATING MEANS TO SUPPLY A GATING SIGNAL TO SAID SWITCHING ELEMENT TO PLACE SAID ELEMENT IN A STATE OF CONDUCTION TO ENERGIZE SAID INDICATING MEANS WHEN THE VOLTAGE ACROSS SAID TERMINALS DECREASES TO A PREDETERMINED VALUE RELATIVE TO THE VOLTAGE ACROSS SAID VOLTAGE REGULATING MEANS AND SECOND CIRCUIT MEANS CONNECTED TO SAID SWITCHING ELEMENT AND RESPONSIVE TO THE CONDUCTION THEREOF TO BIAS SAID ELEMENT IN A NON-CONDUCTIVE STATE TO