Patents by Inventor Robert A. Sphar

Robert A. Sphar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Battery charger for detecting the current rate of charge for rechargeable batteries
    Patent number: 4965507
    Abstract: The invention relates to a rechargeable battery for use in a charger device capable of delivering at least two different rates of charge current, said battery having a positive terminal and a spaced-apart negative terminal for delivering external power and receiving charging power, an indicator band disposed between the positive and negative terminals the location of which is indicative of the rate of charge that the battery can safely accommodate other than the rate of charge it could accept in the absence of the indicator band.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: October 23, 1990
    Assignee: Eveready Battery Company, Inc.
    Inventors: Nicholas J. Smilanich, Robert A. Sphar