×

Portable motor powered device

  • US 20030127932A1
  • Filed: 02/14/2003
  • Published: 07/10/2003
  • Est. Priority Date: 07/02/1999
  • Status: Active Grant
First Claim
Patent Images

1. A portable motor powered device comprising:

  • a housing accommodating a DC motor which operates selectively at two different DC voltages;

    a cordless battery pack detachably connected to said housing and having a battery which supplies a low DC voltage for operating said DC motor;

    a corded power pack detachably connected to said housing and supplying a high DC voltage for operating said motor, said corded power pack having a power cord adapted to be connected to receive an AC source voltage and a converter for converting said AC source voltage into said high DC voltage;

    wherein said DC motor includes a rotor provided with a first winding and a second winding, said first winding being coupled to receive said low voltage for driving said DC motor, and said second winding being coupled to receive said high voltage for driving said DC motor.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×