Battery voltage indicating system

• US 3,321,754 A
• Filed: 08/20/1964
• Issued: 05/23/1967
• Est. Priority Date: 08/20/1964
• Status: Expired due to Term

• Current Assignee: Harry G. Johnson, Robert A. Grimm
• Original Assignee: Harry G. Johnson, Robert A. Grimm
• Inventors: Grimm, Robert A., Johnson, Harry G.
• Application Number:
  US04/390,840
• Time in Patent Office: 1,006 Days
• US Class Current: 340/455
• 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
• CPC Class Codes: H02J 7/14 for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle

Claims

1. AN INDICATING SYSTEM FOR A BATTERY CHARGING SYSTEM COMPRISING, A SOURCE OF DIRECT CURRENT, CONDUCTORS CONNECTED WITH OPPOSITE ENDS OF SAID SOURCE OF DIRECT CURRENT, A BATTERY CONNECTED ACROSS SAID CONDUCTORS, FIRST, SECOND AND THIRD SIGNAL LAMPS, A FIRST CONTROL MEANS CONNECTED TO SENSE THE VOLTAGE ACROSS SAID CONDUCTORS AND OPERATIVE TO CONTROL THE ENERGIZATION OF SAID FIRST AND SECOND SIGNAL LAMPS, SAID FIRST CONTROL MEANS COMPLETING A CIRCUIT FOR SAID FIRST SIGNAL LAMP WHEN THE VOLTAGE APPEARING ACROSS SAID CONDUCTORS IS BELOW A FIRST PREDETERMINED VALUE, SAID FIRST CONTROL MEANS COMPLETING A CIRCUIT FOR SAID SECOND SIGNAL LAMP AND DEENERGIZING SAID FIRST SIGNAL LAMP WHEN THE VOLTAGE APPEARING ACROSS SAID CONDUCTORS IS ABOVE SAID FIRST PREDETERMINED VALUE, SECOND CONTROL MEANS INCLUDING MEANS FOR SENSING THE VOLTAGE APPEARING ACROSS SAID CONDUCTORS AND INCLUDING MEANS FOR CONTROLLING THE ENERGIZATION OF SAID SECOND AND THIRD SIGNAL LAMPS, SAID SECOND CONTROL MEANS COMPLETING A CIRCUIT FOR SAID THIRD SIGNAL LAMP AND DEENERGIZING SAID SECOND SIGNAL LAMP WHEN THE VOLTAGE APPEARING ACROSS SAID CONDUCTORS RISE TO A VALUE WHICH IS ABOVE A SECOND PREDETERMINED VALUE, SAID SECOND PREDETERMINED VALUE BEING HIGHER THAN SAID FIRST PREDETERMINED VALUE.