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Charging system including a charger and an electric power tool operating on an internal battery unit

  • US 6,066,938 A
  • Filed: 03/18/1999
  • Issued: 05/23/2000
  • Est. Priority Date: 03/18/1998
  • Status: Expired due to Fees
First Claim
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1. A power tool charging system, comprising:

  • an electric power tool includingat least one rechargeable battery,a handle containing the at least one battery,a plurality of first terminals provided on the handle for passing currents for charging the at least one battery,a nose to which a tool bit is attached, anda motor powered by the at least one battery for driving the nose; and

    a charger on which the electric power tool is set for charging the at least one battery, the charger includingfirst means for receiving the handle of the electric power tool,second means for receiving the nose of the electric power tool, anda first recess disposed between the first and second receiving means, the first recess configured to provide clearance around the handle when the electric power tool is set on the charger,a plurality of second terminals that are connected to a charger circuit and are provided in the first receiving means, the second terminals establishing electrical contact with the first terminals when the electric power tool is set on the charger, whereby the charger is capable of charging at least one battery of the electric power tool when the handle and the nose are placed in the first and second receiving means, respectively.

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