Patents by Inventor Boris Gersak

Boris Gersak 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: 6725554
    Abstract: Electronic spirit level for measurement of inclination from 0 to 360 degrees. Upon the housing in form of a circular tube, curved in a ring and partially filled with electrically conducting liquid, electrically separated plates of capacitors are placed along the whole length. Because of the difference in relative dielectric constant between air and liquid it can be precisely ascertained, by successive measurements in all condensers, where at the moment the air bubble is placed. The position of the air bubble is recorded in form of a number on a screen. Into a tube along the whole circumference a resistor in the form of a wire is placed which is wound in a spiral shape, where the step of coil is uniformly increasing or multi-layer resistor of the wire, where the cross-section is uniformly changing. By using very thin wires, the resistors are divided in two or several segments.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: April 27, 2004
    Inventor: Boris Gersak