Patents by Inventor Christopher A. Renick

Christopher A. Renick 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).

  • Patent number: 5708348
    Abstract: A battery monitoring method and apparatus for delivering current to a battery, particularly a lead-acid battery, in standby condition after it has been charged and in such a manner as to maintain the rated ideal charge on the battery at the ambient temperature while minimizing damage to the battery cells. In particular, the apparatus and method apply pulses of current of variable width when the battery voltage hovers about its ideal voltage, apply continuous current when the battery voltage is below its ideal voltage by a certain amount thereby to raise the voltage toward its ideal voltage, and turn off the current when the battery voltage exceeds an upper limit indicative of overcharging or when the battery voltage is at a lower limit indicative of a defective battery or reversed connections.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: January 13, 1998
    Assignee: Warren Johnson
    Inventors: Mitchell B. Frey, Kirk L. Hobart, Christopher A. Renick