Battery chargers

• US 3,217,226 A
• Filed: 04/18/1961
• Issued: 11/09/1965
• Est. Priority Date: 04/18/1961
• Status: Expired due to Term

• Current Assignee: Louis N. Strain
• Original Assignee: Louis N. Strain
• Inventors: Strain, Louis N.
• Application Number:
  US04/103,871
• Time in Patent Office: 1,666 Days
• US Class Current: 320/158
• CPC Class Codes: H02J 7/0071 with a programmable schedule
• CPC Class Codes: Y10S 320/19 Charger status, e.g. voltmeter

Claims

1. IN A BATTERY CHARGER, THE COMBINATIOIN OF A CHARGING CIRCUIT;

CONTROL MEANS RESPONSIVE TO TERMINAL VOLTAGE OF THE BATTERY BEING CHARGED AND NORMALLY OPERATIVE TO INTERRUPT THE SAID CHARGING CIRCUIT IN RESPONSE TO OCCURRENCE OF A PREDETERMINED BATTERY TERMINAL VOLTAGE;

TIMER MEANS OPERATIVE TO DETERMINED TWO CONCURRENTLY COMMENCING TIME PERIODS OF DIFFERENT LENGTH;

FIRST MEANS CONTROLLED BY SAID TIMER MEANS AND OPERATIVE TO PREVENT SAID CONTROL MEANS FROM INTERRUPTING SAID CHARGING CIRCUIT DURING THE THE SHORTER OF SAID TIME PERIODS AND TO ACCOMPLISH INTERRUPTION OF SAID CHARGING CIRCUIT AT THE END OF SAID SHORTER PERIOD IN EVENT OF OCCURRENCE OF SAID PREDETERMINED BATTERY TERMINAL VOLTAGE DURING SAID SHORTER PERIOD;

SECOND MEANS CONTROLLED BY SAID TIMER MEANS AND OPERATIVE TO INTERRUPT CHARGING AT THE END OF THE LONGER OF SAID TIME