Patents by Inventor Alon GAL

Alon GAL 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).

  • Apparatus and method for operating a heaterless hollow cathode, and an electric space propulsion system employing such a cathode
    Patent number: 11473568
    Abstract: A heaterless hollow cathode provides electron emission current in an electric space propulsion system. A mechanical, thermal, and electromagnetic design of the cathode apparatus is presented, and a method of operation for rapid ignition and stabilization of the cathode is provided. The keeper of the cathode apparatus has a thickness change which reduces the flow of heat away from the cathode's emitter assembly. The method for heating the emitter assembly includes controlling applied voltages so that the current flowing from the emitter assembly to the keeper is maintained at a predetermined fixed value. By this method, damage to the electron emitting surfaces of the emitter assembly by electric arcing and/or by depletion of dopant materials is avoided.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: October 18, 2022
    Assignee: RAFAEL ADVANCED DEFENSE SYSTEMS LTD.
    Inventors: Dan Lev, Demitiri Mikitchuk, Alon Gal
  • Apparatus and Method for Operating a Heaterless Hollow Cathode, and an Electric Space Propulsion System Employing such a Cathode
    Publication number: 20210071650
    Abstract: A heaterless hollow cathode provides electron emission current in an electric space propulsion system. A mechanical, thermal, and electromagnetic design of the cathode apparatus is presented, and a method of operation for rapid ignition and stabilization of the cathode is provided. The keeper of the cathode apparatus has a thickness change which reduces the flow of heat away from the cathode's emitter assembly. The method for heating the emitter assembly includes controlling applied voltages so that the current flowing from the emitter assembly to the keeper is maintained at a predetermined fixed value. By this method, damage to the electron emitting surfaces of the emitter assembly by electric arcing and/or by depletion of dopant materials is avoided.
    Type: Application
    Filed: December 12, 2017
    Publication date: March 11, 2021
    Inventors: Dan LEV, Demitiri MIKITCHUK, Alon GAL
  • Fluid flow monitoring, verification and control system and method
    Patent number: 10309082
    Abstract: A fluid flow system comprising a supply line, a fluid control unit and at least one end user; wherein fluid flow through the system is facilitated only upon a certified verification signal generated by the end-user and certifying said verification signal by the fluid control unit.
    Type: Grant
    Filed: March 8, 2015
    Date of Patent: June 4, 2019
    Assignee: WINT-WI LTD.
    Inventors: Shay Ravid, Alon Gal, Lior Hertz
  • A FLUID FLOW SYSTEM AND METHOD
    Publication number: 20170016214
    Abstract: A fluid flow system comprising a supply line, a fluid control unit and at least one end user; wherein fluid flow through the system is facilitated only upon a certified verification signal generated by the end-user and certifying said verification signal by the fluid control unit.
    Type: Application
    Filed: March 8, 2015
    Publication date: January 19, 2017
    Inventors: Shay RAVID, Alon GAL, Lior HERTZ