Patents by Inventor H. J. N. Spruijt

H. J. N. Spruijt 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).

  • Method of and circuit for Ni-Cd battery charge control
    Patent number: 4622509
    Abstract: Method of and circuit for Ni-Cd battery charge control, particularly on low earth orbit spacecraft, according to which battery charge is terminated when the battery temperature starts to increase following a decrease at the end of charge. The temperature of the battery is sensed at individual cell level by means of thermistors placed preferably at the geometric center of thin metal plates between the isolated cells, these plates being fixed to a common metal base plate.
    Type: Grant
    Filed: November 9, 1983
    Date of Patent: November 11, 1986
    Assignee: Agence Spatiale Europeenne
    Inventor: H. J. N. Spruijt