Patents by Inventor Dennis E. Tschudi

Dennis E. Tschudi 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: 6020594
    Abstract: A chronograph for determining the muzzle velocity of a projectile fired from either a small arm or a rifle includes two IR light beam assemblies attached to a platform with respective photodetection circuits and a clamp for holding a vertical shot dispersion monitoring target plate at a rear extremity of the platform. The photodetection circuits provide start and stop signals for gating clock pulses of known frequency to an internal counter, the velocity being a scaled inverse of the measured interval. Each light beam assembly has two facing parabolic slit mirrors or reflectors with a photoemitter placed at one focal point and a photodetector at the other focal point for forming thin spaced beams oriented orthogonal to an intended path of the projectile. The photodetector circuit responds to a rapid drop in the total photocurrent of the photodetector in response to the partial blocking of the beam by a passing projectile.
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: February 1, 2000
    Inventor: Dennis E. Tschudi