Patents by Inventor Carmichael Mackie

Carmichael Mackie 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 and apparatus for determining the state of charge of a battery
    Patent number: 4958127
    Abstract: A method of determining the state of charge of a motor vehicle battery 1 in which a stabilization load 2 is applied to the battery 1 after the engine is switched off to accelerate the stabilization of the charge distribution within the battery 1. The stabilization load 2 is applied until the terminal voltage of the battery 1 reaches a level corresponding to a predicted value of the state of charge of the battery 1. After a pre-determined delay of 8 hours or less, the terminal voltage of the battery 1 is measured and the state of charge derived therefrom.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: September 18, 1990
    Assignee: BL Technology Limited
    Inventors: Malcolm Williams, Carmichael Mackie, Peter W. Barbour