Patents by Inventor Richard H. Sparks

Richard H. Sparks 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).

  • Sealed nickel-cadmium battery with self-regulating precharge adjustment capability
    Patent number: 4275127
    Abstract: The negative precharge of a sealed nickel-cadmium battery cell is reduced and the uncharged negative capacity is correspondingly increased to increase the overcharge protection of the cell by overdischarging the cell at a relatively high rate and reacting hydrogen evolved in the cell during such overdischarge with a hydrogen getter which forms a hydride with the hydrogen to prevent excessive hydrogen pressure buildup in the cell.
    Type: Grant
    Filed: June 19, 1979
    Date of Patent: June 23, 1981
    Assignee: TRW Inc.
    Inventors: Paul F. Ritterman, Richard H. Sparks