Patents by Inventor Rudolph Graham

Rudolph Graham 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).

  • Automobile unsafe following distance warning system
    Patent number: 6388580
    Abstract: An automobile unsafe following distance warning system, located in an installed vehicle, for assessing whether a safe following distance is present between the installed vehicle and a front vehicle which is traveling immediately in front of the installed vehicle, comprising a sensor unit for determining the distance between the front vehicle and the installed vehicle, and for determining the speed of the installed vehicle. A threshold safe following distance is determined from the measured speed of the installed vehicle. An initial warning light is illuminated to notify the driver that the actual following distance is less than the threshold safe following distance. A severe warning light, a buzzer, and a vibration unit are activated to notify the driver that the actual following distance is much less than the threshold following distance and that a dangerous situation exists.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: May 14, 2002
    Inventor: Rudolph Graham