Patents Assigned to Leviton Manufacturing Company, Inc.
  • Patent number: 11112453
    Abstract: A process for self testing a fault circuit includes disabling an actuator, performing a self-test by creating a simulated fault signal across at least a portion of a half cycle of a first polarity and across at least a portion of a half cycle of a second polarity, and determining whether the self-test was successful.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: September 7, 2021
    Assignee: Leviton Manufacturing Company, Inc.
    Inventors: Michael Ostrovsky, Adam Kevelos
  • Patent number: 10923941
    Abstract: Systems and methods for universal serial bus (USB) power delivery with multiple charging ports or connectors to charge multiple electronic devices. The systems include a power supply having converter(s) that converts an input voltage to different output voltages and outputs; charging ports electrically coupled to the power supply outputs; and a controller electrically coupled to the power supply and the charging ports or connectors. Each of the charging ports is configured to connect to and provide an output voltage selected from the different output voltages to an electronic device. The controller communicates or publishes information regarding the different output voltage levels that can be provided by the power supply to the electronic devices; receives voltage levels selected by the electronic devices via the charging ports; and controls the power supply to provide the selected voltages to the first and second device, respectively.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: February 16, 2021
    Assignee: Leviton Manufacturing Company, Inc.
    Inventors: A. M. Sarwar Jahan, Levan Papismedov, Tint Y. Aung
  • Publication number: 20210022225
    Abstract: Two-wire dimmer operation includes controlling conduction of power to a lighting load. In one aspect, based on a conduction angle adjustment, power supply voltage is monitored and a maximum conduction angle is established based thereon. In another aspect, a dimming level signal is received and a dimming level for a dimmer is set based on the received dimming level. The dimming level signal indicates a desired dimming level for a dimmer, and a maximum value for the dimming level signal is based on a dimmer power supply voltage. In yet another aspect, based on detecting an adjustment to increase a conduction angle of a dimmer, the conduction end angle is increased and the conduction start angle is also increased. This results in a net increase in the conduction angle for controlling operation of the dimmer.
    Type: Application
    Filed: December 19, 2019
    Publication date: January 21, 2021
    Applicant: Leviton Manufacturing Company, Inc.
    Inventors: Michael OSTROVSKY, Alan NEAL, Alfred LOMBARDI
  • Publication number: 20200404754
    Abstract: A machine learning model for classifying different lighting loads based on properties of electrical current through the loads is built. The model is applied to electrical data gathered based on powering a target lighting load in order to classify the load. Based on load classification, operating parameter(s) to control operation of a dimmer to control power to the load are selected and the dimmer is configured with the selected parameter(s) to achieve desired dimmer operation in dimming the load.
    Type: Application
    Filed: June 18, 2019
    Publication date: December 24, 2020
    Applicant: Leviton Manufacturing Company, Inc.
    Inventors: A M Sarwar JAHAN, Wen GU, Tianjian HUANG
  • Publication number: 20200278388
    Abstract: A process for self testing a fault circuit includes disabling an actuator, performing a self-test by creating a simulated fault signal across at least a portion of a half cycle of a first polarity and across at least a portion of a half cycle of a second polarity, and determining whether the self-test was successful.
    Type: Application
    Filed: May 15, 2020
    Publication date: September 3, 2020
    Applicant: Leviton Manufacturing Company, Inc.
    Inventors: Michael OSTROVSKY, Adam KEVELOS
  • Patent number: 10690700
    Abstract: A circuit interrupting device includes a grounded neutral transformer core, a high frequency transformer core, and a differential transformer core nested within the grounded neutral transformer core and/or the high frequency transformer core. The grounded neutral transformer core and the high frequency transformer core are disposed in a stacked configuration with one another.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: June 23, 2020
    Assignee: Leviton Manufacturing Company, Inc.
    Inventors: Ronald Jansen, Michael Kamor, Michael Ostrovsky, Alfred J. Lombardi
  • Patent number: 10656199
    Abstract: A process for self testing a fault circuit includes disabling an actuator, performing a self test by creating a simulated fault signal across at least a portion of a half cycle of a first polarity and across at least a portion of a half cycle of a second polarity, and determining whether the self test was successful.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: May 19, 2020
    Assignee: Leviton Manufacturing Company, Inc.
    Inventors: Michael Ostrovsky, Adam Kevelos
  • Patent number: 10641812
    Abstract: An apparatus includes an interruption circuit in a power delivery path, and a fault detection circuit configured to provide a fault signal to selectively cause the interruption circuit to interrupt power delivery, wherein the fault detection circuit includes a fault detection integrated circuit and a sensing coil configured to sense a differential current between a phase conductive path and a neutral conductive path in the power delivery path. A processor is configured to selectively control a fault simulation circuit to simulate a fault in the power delivery path, detect a response of the fault detection circuit to the simulated fault, and determine if the response of the fault detection circuit is an expected response. The processor provides an override signal to the interruption circuit to prevent the interruption circuit from receiving a fault signal from the fault detection circuit during, and for a predetermined time after, the simulated fault.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: May 5, 2020
    Assignee: Leviton Manufacturing Company, Inc.
    Inventors: Michael Ostrovsky, Alek Aronov, Michael Kamor, Renjith Mathew
  • Publication number: 20200091758
    Abstract: Systems and methods for universal serial bus (USB) power delivery with multiple charging ports or connectors to charge multiple electronic devices. The systems include a power supply having converter(s) that converts an input voltage to different output voltages and outputs; charging ports electrically coupled to the power supply outputs; and a controller electrically coupled to the power supply and the charging ports or connectors. Each of the charging ports is configured to connect to and provide an output voltage selected from the different output voltages to an electronic device. The controller communicates or publishes information regarding the different output voltage levels that can be provided by the power supply to the electronic devices; receives voltage levels selected by the electronic devices via the charging ports; and controls the power supply to provide the selected voltages to the first and second device, respectively.
    Type: Application
    Filed: September 18, 2018
    Publication date: March 19, 2020
    Applicant: Leviton Manufacturing Company, Inc.
    Inventors: A. M. Sarwar Jahan, Levan Papismedov, Tint Y. Aung
  • Patent number: 10568185
    Abstract: Two-wire dimmer operation includes applying first and second control pulses to a switching circuit controlled between ON and OFF states, the first control pulse beginning at a first starting time and extending for a first duration of time that ends at a first ending time, and the second control pulse beginning at a second starting time, after the first ending time, and extending for a second duration of time that ends at a second ending time, detecting levels of current provided to a lighting load during the first duration of time and during the second duration of time, comparing current levels determined based on applying the first and second control pulses, based on the comparing, ascertaining a load type of the lighting load, and selecting, based on the ascertained load type, parameters that control dimming operation of the dimmer.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: February 18, 2020
    Assignee: LEVITON MANUFACTURING COMPANY, INC.
    Inventors: Michael Ostrovsky, Alan Neal, Alfred Lombardi
  • Publication number: 20190383871
    Abstract: An apparatus includes an interruption circuit in a power delivery path, and a fault detection circuit configured to provide a fault signal to selectively cause the interruption circuit to interrupt power delivery, wherein the fault detection circuit includes a fault detection integrated circuit and a sensing coil configured to sense a differential current between a phase conductive path and a neutral conductive path in the power delivery path. A processor is configured to selectively control a fault simulation circuit to simulate a fault in the power delivery path, detect a response of the fault detection circuit to the simulated fault, and determine if the response of the fault detection circuit is an expected response. The processor provides an override signal to the interruption circuit to prevent the interruption circuit from receiving a fault signal from the fault detection circuit during, and for a predetermined time after, the simulated fault.
    Type: Application
    Filed: August 30, 2019
    Publication date: December 19, 2019
    Applicant: Leviton Manufacturing Company, Inc.
    Inventors: Michael OSTROVSKY, Alek Aronov, Michael Kamor, Renjith Mathew
  • Publication number: 20190356127
    Abstract: An arc fault circuit interrupter is disclosed. This arc fault circuit interrupter can include any one or more of three different sensors such as a high frequency sensor, and any one of lower frequency sensors such as a current sensor or a differential sensor. The arc fault circuit interrupter can be configured as an in line arc fault circuit interrupter installed in a wall box. In addition, the arc fault circuit interrupter can include a processor configured to determine any one of a series arc fault, or a parallel arc fault.
    Type: Application
    Filed: July 29, 2019
    Publication date: November 21, 2019
    Applicant: Leviton Manufacturing Company, Inc.
    Inventors: Michael OSTROVSKY, John LIBRETTO, Ronald JANSEN, Michael KAMOR, Adam KEVELOS
  • Patent number: 10401413
    Abstract: An apparatus includes an interruption circuit in a power delivery path, and a fault detection circuit configured to provide a fault signal to selectively cause the interruption circuit to interrupt power delivery, wherein the fault detection circuit includes a fault detection integrated circuit and a sensing coil configured to sense a differential current between a phase conductive path and a neutral conductive path in the power delivery path. A processor is configured to selectively control a fault simulation circuit to simulate a fault in the power delivery path, detect a response of the fault detection circuit to the simulated fault, and determine if the response of the fault detection circuit is an expected response. The processor provides an override signal to the interruption circuit to prevent the interruption circuit from receiving a fault signal from the fault detection circuit during, and for a predetermined time after, the simulated fault.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: September 3, 2019
    Assignee: Leviton Manufacturing Company, Inc.
    Inventors: Michael Ostrovsky, Alek Aronov, Michael Kamor, Renjith Mathew
  • Patent number: 10367347
    Abstract: An arc fault circuit interrupter is disclosed. This arc fault circuit interrupter can include any one or more of three different sensors such as a high frequency sensor, and any one of lower frequency sensors such as a current sensor or a differential sensor. The arc fault circuit interrupter can be configured as an in line arc fault circuit interrupter installed in a wall box. In addition, the arc fault circuit interrupter can include a processor configured to determine any one of a series arc fault, or a parallel arc fault.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: July 30, 2019
    Assignee: Leviton Manufacturing Company, Inc.
    Inventors: Michael Ostrovsky, John Libretto, Ronald Jansen, Michael Kamor, Adam Kevelos
  • Patent number: 10048653
    Abstract: A timing device is disclosed which is for controlling electronic devices and which is mounted in a wall switch box. This timing device comprises at least one controller, at least one transceiver in communication with the controller, at least one interface; and at least one cover plate. This device can also include at least one key coupled to the cover plates for interacting with the interface when said cover plate is inserted onto said at least one interface.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: August 14, 2018
    Assignee: Leviton Manufacturing Company, Inc.
    Inventors: Michael Ostrovsky, Alfred Lombardi, Selin Tansi Glickman, Cheryl Samartano
  • Publication number: 20180063928
    Abstract: A system is disclosed for controlling operation of an LED lighting system, including a Power over Ethernet (PoE) LED driver couplable to a PoE switch via a power and communication link. The PoE LED driver includes a microcontroller for controlling an LED driver chip to operate an associated LED lighting fixture. A voltage and current measurement unit is coupled to the microcontroller to receive power from the power and communication link, and to provide signals to the microcontroller. The provided signals can be representative of an input electrical parameter of the power and communication link. The microcontroller is programmed to compare the signals representative of the input electrical parameter against a predetermined value, and command operation of the LED driver chip based on the comparison.
    Type: Application
    Filed: August 7, 2017
    Publication date: March 1, 2018
    Applicant: Leviton Manufacturing Company, Inc.
    Inventor: Robert L. Hick
  • Publication number: 20180024179
    Abstract: An apparatus includes an interruption circuit in a power delivery path, and a fault detection circuit configured to provide a fault signal to selectively cause the interruption circuit to interrupt power delivery, wherein the fault detection circuit includes a fault detection integrated circuit and a sensing coil configured to sense a differential current between a phase conductive path and a neutral conductive path in the power delivery path. A processor is configured to selectively control a fault simulation circuit to simulate a fault in the power delivery path, detect a response of the fault detection circuit to the simulated fault, and determine if the response of the fault detection circuit is an expected response. The processor provides an override signal to the interruption circuit to prevent the interruption circuit from receiving a fault signal from the fault detection circuit during, and for a predetermined time after, the simulated fault.
    Type: Application
    Filed: September 11, 2017
    Publication date: January 25, 2018
    Applicant: Leviton Manufacturing Company, Inc.
    Inventors: Michael OSTROVSKY, Alek ARONOV, Michael KAMOR, Renjith MATHEW
  • Patent number: 9709626
    Abstract: A process for self testing a fault circuit includes disabling an actuator, performing a self test by creating a simulated fault signal across at least a portion of a half cycle of a first polarity and across at least a portion of a hall cycle of a second polarity, and determining whether the self test was successful.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: July 18, 2017
    Assignee: Leviton Manufacturing Company, Inc.
    Inventors: Michael Ostrovsky, Adam Kevelos
  • Patent number: 9577420
    Abstract: An arc fault circuit interrupter is disclosed. This arc fault circuit interrupter can include any one or more of three different sensors such as a high frequency sensor, and any one of lower frequency sensors such as a current sensor or a differential sensor. The arc fault circuit interrupter can be configured as an in line arc fault circuit interrupter installed in a wall box. In addition, the arc fault circuit interrupter can include a processor configured to determine any one of a series arc fault, or a parallel arc fault.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: February 21, 2017
    Assignee: Leviton Manufacturing Company, Inc.
    Inventors: Michael Ostrovsky, John Libretto, Ronald Jansen, Michael Kamor, Adam Kevelos
  • Patent number: 9370080
    Abstract: A system and method provide fail-safe operation of a lighting system. A lighting level detector is used to obtain a baseline lighting level for a low-intensity light. If the detector measures less than the baseline level when an occupancy sensor determines the space is unoccupied, a high-intensity light is energized and an indication is provided to a user that the low-intensity light has failed. A method provides daylighting operation of a lighting system. An occupancy sensor can have Wi-Fi functionality to enable remote configuration of the sensor. A line voltage occupancy sensor can include an interface with low voltage devices. An occupancy sensor can include an integral interface to enable an external control system to override the sensor's normal logic under emergency conditions. An occupancy sensor can include an active temperature compensation feature. An occupancy sensor can also incorporate an automatically adjustable coverage area.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: June 14, 2016
    Assignee: LEVITON MANUFACTURING COMPANY, INC.
    Inventor: Richard A. Leinen