Patents by Inventor James Edward Seiferling

James Edward Seiferling 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).

  • Vehicle guidance system
    Patent number: 6289269
    Abstract: A system for use in guiding a vehicle on a roadway along an elongated guide member emitting a magnetic field includes an upper sensor and a lower sensor connected to the vehicle. The lower sensor detects a magnetic field emitted by the elongated guide member and an ambient magnetic field. The upper sensor detects only the ambient magnetic field. The signals produced by the detectors are processed to subtract the signal from the upper sensor of that of the lower sensor to produce a steering signal for transmission to an automatic steering system on the vehicle.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: September 11, 2001
    Assignee: Barrier Systems, Inc.
    Inventor: James Edward Seiferling