Patents by Inventor John L. Bernstein

John L. Bernstein 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).

  • Load-responsive treater controller
    Patent number: 4122382
    Abstract: Improved circuitry for regulating the average power supplied by an AC source to a load includes switching circuitry that the power applies to the load for integral numbers of full cycles of the AC source. Control of the circuit for switching the power on and off is accomplished by sensing and storing the peak current drawn by the load during the most recent application of power, reducing the stored quantity linearly with time, and causing another application of power wnen the stored quantity has dropped below a predetermined threshold.
    Type: Grant
    Filed: April 20, 1977
    Date of Patent: October 24, 1978
    Assignee: Combustion Engineering, Inc.
    Inventor: John L. Bernstein