×

Prevention of electro-chemical corrosion at charging contacts of a battery-powered handpiece and its charger device

  • US 20040257037A1
  • Filed: 04/21/2004
  • Published: 12/23/2004
  • Est. Priority Date: 04/29/2003
  • Status: Active Grant
First Claim
Patent Images

1. A battery-powered handpiece, comprising:

  • a first charging contact connectable to a first contact of a battery; and

    means for allowing charging current to flow from said first charging contact into said battery but preventing current flow in the opposite direction.

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