Patents by Inventor William H. Bartlett

William H. Bartlett 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).

  • Pulse modulated battery charging system
    Patent number: 5296797
    Abstract: A pulse width modulated battery charging system that applies constant current at a set voltage acceptable to the battery under charge and applied by a 90% duty cycle pulse until approximately two thirds of a full battery condition is reached, followed by gradually diminishing pulse width to 10% of said current and voltage as full charge is approached, and terminated when full charge is reached, and characterized by sensing battery condition during dwell between pulse charges and increasing the dwell for battery recovery from the affects of previous pulse charges.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: March 22, 1994
    Assignee: Byrd Electronics Corp.
    Inventor: William H. Bartlett