Battery charger

• US 3,090,904 A
• Filed: 01/12/1959
• Issued: 05/21/1963
• Est. Priority Date: 01/12/1959
• Status: Expired due to Term

• Current Assignee: Henry E. Jensen
• Original Assignee: Henry E. Jensen
• Inventors: Jensen, Henry E.
• Application Number:
  US03/786,144
• Time in Patent Office: 1,590 Days
• US Class Current: 320/157
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: Y10S 320/17 Sensing of "gassing" voltage
• CPC Class Codes: Y10S 320/28 Regulating transformer, e.g. high leakage, ferro-resonant

Claims

2. IN A BATTERY CHARGER, A POWER SOURCE, A TRANSFORMER ENERGIZED FROM SAID POWER SOURCE AND HAVING A RESONANT CIRCUIT AS PART THEREOF INCLUDING A WINDING AND A CAPACITOR, AN OUTPUT WINDING MAGNETICALLY COUPLED TO SAID WINDING OF SAID RESONANT CIRCUIT ADAPTED FOR ELECTRICAL CONNECTION WITH A BATTERY TO BE CHARGED, MEANS FOR CHANGING THE RESONANCE OF SAID RESONANT CIRCUIT THROUGH A CHANGE IN THE CAPACITY THEREOF WHEREBY TO INCREASE THE VOLTAGE OUTPUT OF SAID CIRCUIT AND THEREFORE THE CHARGING RATE OF SAID BATTERY, AND A TIMER FOR CONTROLLING SAID RESONANCE CHANGING MEANS.