Patents by Inventor Arthur E. Clark

Arthur E. Clark 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).

  • Variable delay line
    Patent number: 3949351
    Abstract: A device for varying the velocity of infrasonic, sonic, and ultrasonic sound waves which has a sound wave transmission element made of a material having the formula R.sub.x Fe.sub.1.sub.-x wherein R is a rare earth selected from the group consisting of Sm, Tb, Dy, Ho, Er, Tm, and mixtures thereof and wherein 0.1 < x < 0.9, and means for generating a magnetic field of adjustable strength in the transmission element. The velocity of the sound waves within the transmission element increases with increasing magnetic field strength in the transmission element. This device can be used for generating time delays for sound signals in sonar equipment.
    Type: Grant
    Filed: June 3, 1974
    Date of Patent: April 6, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Arthur E. Clark, Howard T. Savage