Patents by Inventor David Kernaghan

David Kernaghan 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: 5477208
    Abstract: An emergency flasher circuit for use with motor vehicles comprising an emergency switch, a signal generator for generating a signal having a frequency of approximately 10 Hz, and logic circuitry for selectively applying the signal to the headlight(s), and/or to one or both of the left and right turn indicator lights, for alerting other drivers to the presence of the motor vehicle. Alternatively, an optical shutter may be connected to the logic circuitry, and the headlight(s) or one or both of the left and right turn indicator lights for causing light generated by the headlight(s) and/or the turn indicator lights to flash at approximately 10 Hz upon activation of the horn switch, for alerting other drivers to the presence of the motor vehicle.
    Type: Grant
    Filed: July 13, 1994
    Date of Patent: December 19, 1995
    Inventors: Steven Henderson, David Kernaghan
  • Patent number: 5438313
    Abstract: An emergency flasher circuit for use with motor vehicles comprising an emergency switch, a signal generator for generating a signal having a frequency of approximately 10 Hz, and logic circuitry for selectively applying the signal to the headlight(s), and/or to one or both of the left and right turn indicator lights, for alerting other drivers to the presence of the motor vehicle.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: August 1, 1995
    Inventors: Steven Henderson, David Kernaghan
  • Patent number: 5264826
    Abstract: An emergency flasher circuit for use with motorcycles and bicycles comprising an emergency switch, a signal generator for generating a signal having a frequency of approximately 10 Hz, and logic circuitry for selectively applying the signal to one or both of the left and right turn indicator lights and a headlight of a motorcycle or bicycle, for alerting drivers of motor vehicles to the presence of the motorcycle or bicycle.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: November 23, 1993
    Inventors: Steven Henderson, David Kernaghan