Patents by Inventor Peter D. Zavitsanos

Peter D. Zavitsanos 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).

  • Programmable power attenuator for continuous CO.sub.2 lasers
    Patent number: 4065207
    Abstract: A device which will attenuate a 10.6 micron wave length light beam from 1% of the original intensity. The original intensity can be as high as 1000 watts. The unit is an absorption cell of variable path length filled with a gaseous mixture of sulfur hexafluoride and nitrogen at a total of one atmosphere. Power attenuation is accomplished by SF.sub.6 - absorption and energy exchange to N.sub.2 or walls. The output is controlled by a motor which moves one of the two windows thus changing the absorption path.
    Type: Grant
    Filed: September 17, 1976
    Date of Patent: December 27, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Peter D. Zavitsanos, Joseph A. Golden, Frederick N. Alyea