Patents by Inventor Douglas C. Brueggemann

Douglas C. Brueggemann 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).

  • Integrated vehicular electronic signalling system
    Patent number: 5808545
    Abstract: An electronic vehicular signalling system is disclosed. It has a novel turn signal switch having electromagnetic detents, novel electronic circuitry which provides all standard signalling functions and optionally features automatic cancellation of turn signal switch, an energy saving hazard warning mode, a police alert hazard warning mode, double-rate turn signal flashing on lamp burnout, Vehicular Lamp Status Display System, clicking sound in cadence with flashing or tone, and automatic turn signal timeout with choice of timeout intervals. Separate flasher units are not needed, nor a microprocessor.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: September 15, 1998
    Inventors: Douglas C. Brueggemann, Norman R. Dittmar
  • F.E.T. flasher
    Patent number: 5192930
    Abstract: An electronic flasher switch, for use in vehicular signalling systems. The flasher features automatic timeout and an audio oscillator for timing and for optional audio signalling to supplement interior turn signal dash indicator lights. A single integrated circuit and two small capacitors allow compact, low cost implementation.
    Type: Grant
    Filed: December 26, 1991
    Date of Patent: March 9, 1993
    Inventors: Douglas C. Brueggemann, Norman R. Dittmar