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Dual-mode non-isolated corded system for transportable cordless power tools

  • US 6,460,626 B2
  • Filed: 07/24/2001
  • Issued: 10/08/2002
  • Est. Priority Date: 12/30/1998
  • Status: Expired due to Fees
First Claim
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1. A corded/cordless system for power tools comprising:

  • a low-voltage DC power tool operable in a preselected voltage range, said power tool having an exterior, an interior, a pre-defined interface for mechanically and electrically mating with a power supply module, and a double-insulated case to prevent the conduction of electrical charge from the interior to the exterior of the power tool; and

    a corded non-isolated power supply module mechanically and electrically configured to connect to a source of relatively high voltage electric power and to mate with the low-voltage DC power tool, said corded non-isolated power supply module being adapted to convert said relatively high voltage line power from the source of electric power to a DC voltage in the preselected voltage range suitable for powering the low-voltage DC power tool.

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