Patents by Inventor Daniel A. Aucoin

Daniel A. Aucoin 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).

  • Fail-safe electrical-ground indicator
    Patent number: 4642554
    Abstract: A fail-safe electrical ground indicator is described which includes apparatus for testing whether a vessel or piece or equipment is adequately grounded. The indicator further includes grounded parallel resistors for checking the integrity of the test apparatus, means for making electrical contact between the test apparatus and each of the resistors one at a time, means for making electrical contact between the test apparatus and both resistors at the same time, means for determining whether an electrical current passing through the test apparatus and each of the resistors separately exceeds a specified value, and means for determining whether an electrical current passing through the test apparatus and all of the resistors exceeds the specified value.
    Type: Grant
    Filed: January 25, 1985
    Date of Patent: February 10, 1987
    Assignee: The Dow Chemical Company
    Inventor: Daniel A. Aucoin