Cordless tool battery housing and charging system

  • US 5,144,217 A
  • Filed: 09/29/1989
  • Issued: 09/01/1992
  • Est. Priority Date: 03/03/1989
  • Status: Expired due to Term
First Claim
Patent Images

1. A battery pack and charger assembly in combination comprising:

  • a battery pack having a terminal block including an insulator carrying a pair of spaced apart terminal pins, the insulator including an elongated insulating member extending between the pins, the insulating member and the terminal pins being generally parallel and extending in a first direction when the battery pack is inserted in the charger assembly;

    a charger assembly including (1) a receptacle for accepting the insertion of the battery pack, (2) a terminal assembly for engagement by the terminal block of the battery pack, the terminal assembly including a pair of normally retracted terminal blades, and (3) a housing for substantially enclosing the terminal assembly, said housing including a receptacle with a sunken floor and substantially upright walls, the floor including apertures registering with the terminal assembly; and

    terminal blade control means included in the terminal assembly of the charger assembly, responsive to engagement by the insulating member of the battery pack terminal block, for erecting the terminal blades into an operating position so that when the battery pack is inserted into the charger assembly each terminal pin makes electrical contact with one of the terminal blades.

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