Patents by Inventor Charles W. Hargis

Charles W. Hargis 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: 4857807
    Abstract: An auxiliary light module for vehicles, giving "battery back-up" provisions, particularly useful for "semi" vehicles in which the pulling tractor electrically energizes the light systems of the pulled trailer by a connector strap or harness for interconnecting the tractor's output jack and the trailer's input jack; and the module provides a device conveniently connectable to both the tractor and trailer by jacking to the jacks now used by the jacks of such connector strap or harness. The module includes a battery, a switch, and circuitry for providing the electrical energization of the trailer's running lights and tail lights when the semi is stopped, and whether or not the tractor remains connected to the trailer, providing safety of the warning lights being lit, avoiding drain on the tractor's own battery, etc.
    Type: Grant
    Filed: September 2, 1987
    Date of Patent: August 15, 1989
    Inventor: Charles W. Hargis
  • Patent number: 4029707
    Abstract: N-Alkylated aromatic amines are produced in high yield by the vapor-phase reaction of an aromatic amine with a lower aliphatic alcohol at elevated temperature in the presence of an acidic agent supported on eta-alumina.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: June 14, 1977
    Assignee: Eastman Kodak Company
    Inventor: Charles W. Hargis