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Cordless battery charger

  • US 4,857,820 A
  • Filed: 09/08/1987
  • Issued: 08/15/1989
  • Est. Priority Date: 09/08/1987
  • Status: Expired due to Fees
First Claim
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1. A self-contained battery charger for use in charging an automotive-type battery that has a pair of terminals, said battery charger comprising:

  • battery means providing a predetermined battery voltage;

    means powered by said predetermined battery voltage for creating an AC voltage signal of predetermined magnitude;

    rectifier means for converting said AC voltage signal to a DC voltage of predetermined magnitude;

    summing means for creating a battery charging signal formed by adding said predetermined battery voltage to said DC voltage; and

    conveying means for conveying said battery charging signal from said summing means to the terminals of said automotive-type battery to charge the automotive-type battery.

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