Plural source charging circuit for rechargeable flashlight

• US 3,264,545 A
• Filed: 03/23/1964
• Issued: 08/02/1966
• Est. Priority Date: 03/23/1964
• Status: Expired due to Term

• Current Assignee: Herbert Kott
• Original Assignee: Herbert Kott
• Inventors: Kott, Herbert
• Application Number:
  US04/353,858
• Time in Patent Office: 862 Days
• US Class Current: 320/114
• CPC Class Codes: F21L 4/085 Pocket lamps
• CPC Class Codes: H02J 2207/40 adapted for charging from various sources, e.g. AC, DC or multivoltage
• CPC Class Codes: Y10S 320/21 State of charge of battery
• CPC Class Codes: Y10S 320/22 Line impedance, e.g. resistor

Claims

1. IN COMBINATION WITH AN ELECTRICAL SYSTEM COMPRISING A SOURCE BATTERY, A GENERATOR, A UTILIZATION DEVICE, AN ELECTRICAL CONNECTION BETWEEN SAID BATTERY AND SAID GENERATOR, AND AN ELECTRICAL CONNECTION BETWEEN SAID GENERATOR AND SAID UTILIZATION DEVICE INCLUDING A SWITCH;

A CHARGING CIRCUIT FOR A SECOND BATTERY COMPRISING FIRST AND SECOND CHARGING CIRCUIT BRANCHES EACH ADAPTED TO BE CONNECTED AT ONE END TO A SECOND BATTERY, SAID FIRST BRANCH COMPRISING A FIRST RESISTANCE, SAID SECOND BRANCH COMPRISING A SECOND RESISTANCE THE MAGNITUDE OF WHICH IS MANY TIMES SMALLER THAN THAT OF SAID FIRST RESISTANCE, THE OTHER END OF SAID FIRST BRANCH BEING CONNECTED TO SAID SOURCE BATTERY INDEPENDENTLY OF SAID SWITCH, THE OTHER END OF SAID SECOND BRANCH BEING CONNECTED TO SAID SWITCH, SAID SWITCH CONNECTING SAID SECOND BRANCH TO AND DISCONNECTING SAID SECOND BRANCH FROM SAID GENERATOR WHEN SAID SWITCH RESPECTIVELY CONNECTS AND DISCONNECTS SAID UTILIZATION DEVICE RELATIVE TO SAID GENERATOR.