Patents by Inventor Roger D. Ewert

Roger D. Ewert 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: 7042340
    Abstract: An animal alerting device system and method for mounting in a vehicle produces a sound that stimulates an alertness response in large animals to reduce the likelihood that the animals will run into a roadway and cause an animal-vehicle crash. The sound produced by the device is a random sound pattern in an audible frequency range. The volume of the sound produced is automatically adjusted for vehicle speed. Different sound patterns may be produced automatically based on different geographical locations of the vehicle in which the device is mounted.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: May 9, 2006
    Inventors: Roger D. Ewert, Steven J. Ylvisaker, Tom N. Thiele
  • Patent number: 5515026
    Abstract: A complete vehicle accident prevention system utilizing electromagnetic transmissions for the purpose of: 1) alerting drivers to the presence of certain unanticipated accident threats such as pedestrians, bicyclists, joggers, emergency vehicles, disabled vehicles, etc.; 2) alerting people using the roadway that a vehicle is approaching thereby inducing them to move to the side of the road. The system also utilizes a speaker assembly mounted on the vehicle to forwardly transmit a pre-programmed array of natural sounds having a frequency audible to the typical human ear for the purpose of inducing animals and people to vacate the path of the approaching vehicle. The controller may receive data from a radio direction finder to cause the display to indicate to the driver of the vehicle the relative position of a potential road hazard.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: May 7, 1996
    Inventor: Roger D. Ewert