Patents by Inventor Joseph S. Lewis

Joseph S. Lewis 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).

  • Automated AC line filter and surge suppression apparatus and method
    Patent number: 7940506
    Abstract: An automated AC line filter and surge suppression apparatus 100 having an inductive current sense loop (ICSL) circuit 10 for sensing inductive current at a load and controlling the application of AC line filter 112 to an AC power line to the load. Current sensor 12 in series with the input line senses inductive load current. A first bridge rectifier 14 rectifies the sensed load current to a proportionate DC voltage, which triggers a switch 24. The output of switch 24 is fed into an opto-isolator 26, which in turn controls second switch 28. Switch 28 connects or disconnects AC line filter 112 from the system according to a predetermined sensed inductive current at the load. MOVs 102 and capacitive elements 104 provide continuous surge suppression protection to the load.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: May 10, 2011
    Assignee: Dollar Energy Group, Inc.
    Inventor: Joseph S. Lewis
  • Automated AC line filter and surge suppression apparatus and method
    Patent number: 6992873
    Abstract: A automated AC line filter and surge suppression apparatus 100 having an inductive current sense loop (ICSL) circuit 10 for sensing inductive current at a load and controlling the application of AC line filter 112 to an AC power line to the load. Current sensor 12 in series with the input line senses inductive load current. A first bridge rectifier 14 rectifies the sensed load current to a proportionate DC voltage, which triggers a switch 24. The output of switch 24 is fed into an opto-isolator 26, which in turn controls second switch 28. Switch 28 connects or disconnects AC line filter 112 from the system according to a predetermined sensed inductive current at the load. MOVs 102 and capacitive elements 104 provide continuous surge suppression protection to the load.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: January 31, 2006
    Inventor: Joseph S. Lewis
  • Automated AC line filter and surge suppression apparatus and method
    Publication number: 20040174652
    Abstract: A automated AC line filter and surge suppression apparatus 100 having an inductive current sense loop (ICSL) circuit 10 for sensing inductive current at a load and controlling the application of AC line filter 112 to an AC power line to the load. Current sensor 12 in series with the input line senses inductive load current. A first bridge rectifier 14 rectifies the sensed load current to a proportionate DC voltage, which triggers a switch 24. The output of switch 24 is fed into an opto-isolator 26, which in turn controls second switch 28. Switch 28 connects or disconnects AC line filter 112 from the system according to a predetermined sensed inductive current at the load. MOVs 102 and capacitive elements 104 provide continuous surge suppression protection to the load.
    Type: Application
    Filed: March 5, 2003
    Publication date: September 9, 2004
    Inventor: Joseph S. Lewis
  • Surge and lightning suppressor with fault lamp indicators
    Patent number: D482003
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: November 11, 2003
    Inventor: Joseph S. Lewis
  • Surge and lightning suppressor with fault lamp indicators
    Patent number: D435019
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: December 12, 2000
    Inventor: Joseph S. Lewis