Patents by Inventor Michael Henry Drewry

Michael Henry Drewry 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).

  • Patent number: 10170904
    Abstract: A surge reduction filter (SRF) includes a cartridge having a cartridge housing, a first active connection point for connection to an active line of an AC power supply, and a neutral connection point for connection to a neutral line of the AC power supply. The active and neutral connection points are located to be accessible from outside the cartridge. A first fuse and a first surge protection element are electrically connected in series between the active and neutral connection points. A status circuit is connected to monitor the surge protection element and an indicator is connected to the status circuit to indicate at least a normal status and a fault status of the surge protection element. The status circuit detects a change in voltage at a point between the fuse and the protection element and creates a fault indication if a voltage change is detected due to the fuse operating.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: January 1, 2019
    Assignee: PIVOT ELECTRONICS PTY LTD
    Inventors: Philip Louis Peach, Michael Henry Drewry, Bruce Raymond Russek
  • Patent number: 10027108
    Abstract: A surge reduction filter (SRF) includes a cartridge having a cartridge housing, a first active connection point for connection to an active line of an AC power supply, and a neutral connection point for connection to a neutral line of the AC power supply. The active and neutral connection points are located to be accessible from outside the cartridge. A first fuse and a first surge protection element are electrically connected in series between the active and neutral connection points. A status circuit is connected to monitor the surge protection element and an indicator is connected to the status circuit to indicate at least a normal status and a fault status of the surge protection element. The status circuit detects a change in voltage at a point between the fuse and the protection element and creates a fault indication if a voltage change is detected due to the fuse operating.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: July 17, 2018
    Assignee: PIVOT ELECTRONICS PTY LTD
    Inventors: Philip Louis Peach, Michael Henry Drewry, Bruce Raymond Russek
  • Publication number: 20160064922
    Abstract: A surge reduction filter (SRF) includes a cartridge having a cartridge housing, a first active connection point for connection to an active line of an AC power supply, and a neutral connection point for connection to a neutral line of the AC power supply. The active and neutral connection points are located to be accessible from outside the cartridge. A first fuse and a first surge protection element are electrically connected in series between the active and neutral connection points. A status circuit is connected to monitor the surge protection element and an indicator is connected to the status circuit to indicate at least a normal status and a fault status of the surge protection element. The status circuit detects a change in voltage at a point between the fuse and the protection element and creates a fault indication if a voltage change is detected due to the fuse operating.
    Type: Application
    Filed: April 2, 2014
    Publication date: March 3, 2016
    Applicant: PIVOT ELECTRONICS PTY LTD
    Inventors: Philip Louis Peach, Michael Henry Drewry, Bruce Raymond Russek
  • Publication number: 20160020605
    Abstract: A surge reduction filter (SRF) includes a cartridge having a cartridge housing, a first active connection point for connection to an active line of an AC power supply, and a neutral connection point for connection to a neutral line of the AC power supply. The active and neutral connection points are located to be accessible from outside the cartridge. A first fuse and a first surge protection element are electrically connected in series between the active and neutral connection points. A status circuit is connected to monitor the surge protection element and an indicator is connected to the status circuit to indicate at least a normal status and a fault status of the surge protection element. The status circuit detects a change in voltage at a point between the fuse and the protection element and creates a fault indication if a voltage change is detected due to the fuse operating.
    Type: Application
    Filed: September 29, 2015
    Publication date: January 21, 2016
    Inventors: Philip Louis Peach, Michael Henry Drewry, Bruce Raymond Russek