Patents by Inventor Jack C. Cordes

Jack C. Cordes 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: 4358716
    Abstract: The present solid state device generates variable interval, high frequency bursts of alternating current to dim or otherwise control a discharge lamp or the like, and features an adjustable duty-cycle burst control subcircuit that intermittently interrupts a pair of constant, phase-reversed, high frequency pulse sequences, thereby permitting variable interval bursts of the pulse sequences to reach a pair of semiconductor devices. The semiconductors alternately switch ON and OFF in response to the high frequency pulses applied thereto, thereby rapidly alternating the direction of current flow through a suitable inductor configuration which, in turn, is connected to the load.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: November 9, 1982
    Assignee: White Castle System, Inc.
    Inventors: Jack C. Cordes, Dennis J. Denen