Patents by Inventor James F. Trenter

James F. Trenter 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).

  • Maintenance-free battery
    Patent number: 4166155
    Abstract: The present invention provides a maintenance-free battery having improved performance characteristics and utilizing a unique, hybrid combination of ternary alloys for the positive and negative grids. The positive grids are formed from a ternary, lead base alloy consisting essentially of lead, from about 1.0 to about 2.0% antimony and from about 1.2 to about 2.2% cadmium, the cadmium being present in an amount at least equal to the amount of antimony present; and the negative grids are formed from a ternary lead base alloy consisting essentially of lead, from 0.06 to about 0.20% calcium and from about 0.10 to about 0.40% tin, the percentages of each alloy being based on the alloy weight.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: August 28, 1979
    Assignee: Gould Inc.
    Inventors: George W. Mao, Purushothama Rao, James F. Trenter