Patents by Inventor Said Lassal

Said Lassal 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).

  • Filter circuit for eliminating inrush current, DC coil control circuit, and electromagnetic contactor
    Patent number: 10305390
    Abstract: The present invention relates to a filter circuit for eliminating capacitive inrush current occurring in electromagnetic coil control circuits controlling the actuator coil of electromagnetic contactors or relays. The filter circuit comprises input terminals to be connected with a direct current voltage, a first output terminal to be connected with a first terminal of the inductive load and a second output terminal to be connected to a second terminal of the inductive load, a first diode, wherein the cathode of the first diode is connected to said first output terminal and to said first input terminal, a second diode, wherein the anode of the second diode is connected to said second output terminal, and a filter capacitor which is connected between said second input terminal and to a node which interconnects the anode of said first diode and the cathode of said second diode.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: May 28, 2019
    Assignee: Rockwell Automation Switzerland GMBH
    Inventor: Said Lassal
  • Filter Circuit for Eliminating Inrush Current, DC Coil Control Circuit, and Electromagnetic Contactor
    Publication number: 20180123471
    Abstract: The present invention relates to a filter circuit for eliminating capacitive inrush current occurring in electromagnetic coil control circuits controlling the actuator coil of electromagnetic contactors or relays. The filter circuit comprises input terminals to be connected with a direct current voltage, a first output terminal to be connected with a first terminal of the inductive load and a second output terminal to be connected to a second terminal of the inductive load, a first diode, wherein the cathode of the first diode is connected to said first output terminal and to said first input terminal, a second diode, wherein the anode of the second diode is connected to said second output terminal, and a filter capacitor which is connected between said second input terminal and to a node which interconnects the anode of said first diode and the cathode of said second diode.
    Type: Application
    Filed: May 19, 2017
    Publication date: May 3, 2018
    Inventor: Said Lassal