Patents by Inventor Joseph Cassio

Joseph Cassio 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).

  • Methods and apparatus for adaptive charge neutralization
    Patent number: 11843225
    Abstract: An example apparatus for charge neutralization includes: a first emitter nozzle; a power supply configured to supply a high frequency alternating current (AC) signal to the first emitter nozzle; control circuitry configured to: provide a polarity signal to the power supply to generate a DC offset signal, wherein a combination of the high frequency AC signal and the DC offset signal causes the power supply to output a positive ion generation pulse or a negative ion generation pulse; control the polarity signal to cause the power supply to provide a period of positive ion generation and a period of negative ion generation; determine a balance voltage at an output of the first emitter nozzle; and control the polarity signal to adjust a relative durations of the period of positive ion generation and the period of negative ion generation based on the balance voltage.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: December 12, 2023
    Assignee: Illinois Tool Works Inc.
    Inventors: Steven Bernard Heymann, Edward Anthony Oldynski, Joseph Cassio, Juan Guerrero
  • METHODS AND APPARATUS FOR ADAPTIVE CHARGE NEUTRALIZATION
    Publication number: 20220407294
    Abstract: An example apparatus for charge neutralization includes: a first emitter nozzle; a power supply configured to supply a high frequency alternating current (AC) signal to the first emitter nozzle; control circuitry configured to: provide a polarity signal to the power supply to generate a DC offset signal, wherein a combination of the high frequency AC signal and the DC offset signal causes the power supply to output a positive ion generation pulse or a negative ion generation pulse; control the polarity signal to cause the power supply to provide a period of positive ion generation and a period of negative ion generation; determine a balance voltage at an output of the first emitter nozzle; and control the polarity signal to adjust a relative durations of the period of positive ion generation and the period of negative ion generation based on the balance voltage.
    Type: Application
    Filed: June 2, 2022
    Publication date: December 22, 2022
    Inventors: Steven Bernard Heymann, Edward Anthony Oldynski, Joseph Cassio, Juan Guerrero