Patents by Inventor Phillip D. Hutchings

Phillip D. Hutchings 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).

  • Universal battery charging system and a method
    Patent number: 5049804
    Abstract: A universal battery charger and recharger for electric batteries having different charging characteristics. The battery charger includes a microprocessor receiving inputs from current, voltage and temperature sensors for controlling the battery charging profile. A replaceable memory may be included to provide an appropriate charging profile for the battery to be charged. The supply current is varied responsively to the voltage across the battery which is measured when the supply current reaches a predetermined level or after a predetermined time.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: September 17, 1991
    Assignee: Power-Tech Systems Corporation
    Inventor: Phillip D. Hutchings
  • Universal battery charging system and a method
    Patent number: 4843299
    Abstract: A universal battery charger and recharger for electric batteries having different charging characteristics. The battery charger includes a microprocessor receiving inputs from current, voltage and temperature sensors for controlling the battery charging profile. A replaceable memory may be included to provide an appropriate charging profile for the battery to be charged. The supply current is varied responsively to the voltage across the battery which is measured when the supply current reaches a predetermined level or after a predetermined time.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: June 27, 1989
    Assignee: Power-Tech Systems Corporation
    Inventor: Phillip D. Hutchings