Patents by Inventor Donald F. Oberg

Donald F. Oberg 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: 5705893
    Abstract: An ignition activated automotive headlight system having a high beam circuit and a low beam circuit, the low beam circuit having a resistor in series connection therewith for daylight driving, the low beam circuit further having a photoelectrically operated by-pass circuit around the resistor, thereby permitting normal operation of the low beam circuit for nighttime driving.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: January 6, 1998
    Inventor: Donald F. Oberg
  • Patent number: 5431032
    Abstract: This invention provides a front-loaded washer comprising a top panel and a washer tub adapted to rotate on a horizontal axis, wherein at least a portion of the top panel of the washer comprises a tank, the tank being adapted for storing water from a desired rinse cycle and returning the stored water to the tub for use in a wash cycle.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: July 11, 1995
    Inventor: Donald F. Oberg
  • Patent number: 5289898
    Abstract: Apparatus for maintaining the quality of lubricant and level of lubricant in an internal combustion engine without having to remove lubricant. The oil pan or crank case normally mounted on the underside of an internal combustion engine is modified to include a deep well in the lower wall thereof which has a breadth substantially less than the breadth of the oil pan so that a substantially reduce volume of oil is required to safely operate the engine. Apparatus is also provided for supplying make-up lubricant to the engine while the engine is operating and includes an air impervious reservoir containing make-up lubricant. A conduit is coupled to the lower end of the reservoir and is received in the deep well. The conduit includes a lower end having a discharge opening disposed at the level of lubricant in the well when the engine is operating.
    Type: Grant
    Filed: January 25, 1993
    Date of Patent: March 1, 1994
    Inventor: Donald F. Oberg