Patents by Inventor Zoltan L. Gyursanszky

Zoltan L. Gyursanszky 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).

  • Zero phase switching for multi-phase systems
    Patent number: 4167696
    Abstract: A multi-phase, zero phase control apparatus is disclosed having switches for controlling the application of power from a multi-phase source to a load and a control apparatus for energizing the switches to conduct current to the load beginning at the zero point in the current cycle, wherein the control apparatus has a synchronization network to insure that the control apparatus is synchronized to the line current regardless of the conductive states of the switches.
    Type: Grant
    Filed: October 20, 1977
    Date of Patent: September 11, 1979
    Assignee: Honeywell Inc.
    Inventor: Zoltan L. Gyursanszky
  • Two-wire ballast for fluorescent tube dimming
    Patent number: 4163925
    Abstract: A two-wire ballast arrangement is disclosed for fluorescent tubes having first and second terminals for supplying variable power to dim the fluorescent tube, a choke coil connected between the first terminal and the fluorescent tube and a filament transformer having a primary connected between the second terminal and a tap on the choke coil, the tap being selected to supply substantially constant voltage to the primary winding, the transformer having secondary windings to supply filament voltage to the fluorescent tube.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: August 7, 1979
    Assignee: Honeywell Ltd.
    Inventor: Zoltan L. Gyursanszky
  • Dv/dt protection for solid state switches
    Patent number: 4157578
    Abstract: A gating system for a solid state switch is disclosed having a dv/dt sensing apparatus to insure that the solid state switch is turned on if the rate of rise of the voltage across the solid state is sufficiently large to damage the switch.
    Type: Grant
    Filed: October 20, 1977
    Date of Patent: June 5, 1979
    Assignee: Honeywell Inc.
    Inventor: Zoltan L. Gyursanszky
  • Two-wire ballast for fluorescent tube dimming
    Patent number: RE31146
    Abstract: A two-wire ballast arrangement is disclosed for fluorescent tubes having first and second terminals for supplying variable power to dim the fluorescent tube, a choke coil connected between the first terminal and the fluorescent tube and a filament transformer having a primary connected between the second terminal and a tap on the choke coil, the tap being selected to supply substantially constant voltage to the primary winding, the transformer having secondary windings to supply filament voltage to the fluorescent tube.
    Type: Grant
    Filed: March 2, 1981
    Date of Patent: February 8, 1983
    Assignee: Honeywell Ltd.
    Inventor: Zoltan L. Gyursanszky