Patents Assigned to Leviton Manufacturing Company
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Publication number: 20170117699Abstract: 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: ApplicationFiled: January 6, 2017Publication date: April 27, 2017Applicant: Leviton Manufacturing CompanyInventors: Michael OSTROVSKY, John LIBRETTO, Ronald JANSEN, Michael KAMOR, Adam KEVELOS
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Patent number: 9577420Abstract: 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: GrantFiled: November 25, 2013Date of Patent: February 21, 2017Assignee: Leviton Manufacturing Company, Inc.Inventors: Michael Ostrovsky, John Libretto, Ronald Jansen, Michael Kamor, Adam Kevelos
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Patent number: 9370068Abstract: A system and method are disclosed for dimming light emitting diode (LED) lamps. A control unit is coupled to a dimmer and LED lamp. The dimmer receives power from an AC source and determines a phase angle of the AC power. The dimmer provides DC power to the lamp based on the phase angle. The control unit sends a control signal to the dimmer during a first portion of each half sine-wave of the received AC power. The control signal causes the dimmer to modify at least one function of the lamp. A plurality of LED lamps may be associated with a single dimmer, and the dimmer may individually instruct the lamps to modify their operational characteristics. The dimmer may send an operational signal back to the control unit. The operational signal may represent end of life information for the associated LED lamp. Other embodiments are described and claimed.Type: GrantFiled: December 16, 2011Date of Patent: June 14, 2016Assignee: LEVITON MANUFACTURING COMPANY, INC.Inventors: Robert L. Hick, Richard A. Leinen
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Patent number: 9370080Abstract: 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: GrantFiled: January 11, 2016Date of Patent: June 14, 2016Assignee: LEVITON MANUFACTURING COMPANY, INC.Inventor: Richard A. Leinen
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Patent number: 9271375Abstract: A system and method are disclosed for providing 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 is also disclosed for 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: GrantFiled: February 25, 2013Date of Patent: February 23, 2016Assignee: LEVITON MANUFACTURING COMPANY, INC.Inventors: Jaiganesh Balasubramanian, Justin Morton, Subramanian Muthu
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Publication number: 20150309105Abstract: 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: ApplicationFiled: April 17, 2015Publication date: October 29, 2015Applicant: Leviton Manufacturing CompanyInventors: Michael OSTROVSKY, Alek ARONOV, Michael KAMOR, Renjith MATHEW
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Publication number: 20150309103Abstract: 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 (IC) 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: ApplicationFiled: April 25, 2014Publication date: October 29, 2015Applicant: Leviton Manufacturing CompanyInventors: Michael Ostrovsky, Alek Aronov, Michael Kamor, Renjith Mathew
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Patent number: 9112321Abstract: The present invention relates to an illuminated receptacle. In one particularly preferred embodiment, the receptacle preferably includes a body, a cover for coupling to said body, said cover having one or more sockets for receiving a plug, a tamper resistant (TR) platform associated with each of the one or more sockets, each of the TR platforms being disposed between the body and the cover, each of the TR platforms including a cavity and an aperture extending thru said platform in said cavity, a slider disposed within each of the cavities of the platform and aligned with the openings of a respective socket, and a light source disposed within each of the apertures formed in the platforms, the light sources operatively coupled to electrical power for generating light to illuminate said slider, the light sources being positioned to directly transmit light to the sliders.Type: GrantFiled: December 30, 2010Date of Patent: August 18, 2015Assignee: LEVITON MANUFACTURING COMPANY, INC.Inventors: Vikramsinh Bhosale, Mario Angelides, Joseph DeConinck, Michael Mattei
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Patent number: 9095013Abstract: 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: GrantFiled: September 8, 2014Date of Patent: July 28, 2015Assignee: LEVITON MANUFACTURING COMPANY, INC.Inventors: Richard A. Leinen, Jaiganesh Balasubramanian, Justin Morton, Subramanian Muthu
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Patent number: 8981299Abstract: A method of sensing motion in a predetermined area is provided. The method may include using a digital output motion sensor to produce a digital output signal indicative of the presence of motion in the predetermined area. The method may further include transmitting the digital output signal along a signal path independent of analog amplification and filtering. The method may also include using a microprocessor coupled to the signal path to receive the digital output signal and to process the digital output signal.Type: GrantFiled: March 29, 2011Date of Patent: March 17, 2015Assignee: Leviton Manufacturing Company, Inc.Inventors: Paul Soccoli, Michael Ostrovsky, Al Lombardi
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Patent number: 8944859Abstract: A wire clamp is presented including a body having a face surface and an opposing back surface; a front end, a back end, and side ends; at least one tab positioned on an edge of the back end and an opening disposed substantially centrally on the body, the opening extending from the face surface to the back surface. The wire clamp also includes a plurality of gripping members positioned on edges of the side ends and a raised ridge extending a width of the clamp, the raised ridge adapted to grip a wire.Type: GrantFiled: June 1, 2010Date of Patent: February 3, 2015Assignee: Leviton Manufacturing Company, Inc.Inventors: Michael Kamor, Adam Kevelos
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Publication number: 20140239817Abstract: A system and method are disclosed for providing 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 is also disclosed for 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: ApplicationFiled: February 25, 2013Publication date: August 28, 2014Applicant: LEVITON MANUFACTURING COMPANY, INC.Inventors: Richard A. Leinen, Jaiganesh Balasubramanian, Justin Morton, Subramanian Muthu, Robert Hick, John Elzie, Brian Carberry, David Buerer
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Publication number: 20140218044Abstract: 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: ApplicationFiled: November 25, 2013Publication date: August 7, 2014Applicant: Leviton Manufacturing CompanyInventors: Michael OSTROVSKY, John LIBRETTO, Ronald JANSEN, Michael KAMOR, Adam KEVELOS
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Patent number: 8736193Abstract: Threshold-based zero-crossing detection is provided. A power phase threshold detector detects when absolute value of a voltage level of the electrical power rises above a non-zero voltage threshold and outputs a zero-crossing signal to a controller to indicate occurrence of the zero-crossing. Delaying the zero-crossing signal to the point when the absolute value of the voltage level of the electrical power rises above the non-zero voltage threshold ensures completion of the zero-crossing of the power phase prior to signaling the controller. The controller provides signals to a switching circuit for controlling switching of electrical power to a load based on the zero-crossing indications.Type: GrantFiled: December 22, 2011Date of Patent: May 27, 2014Assignee: Leviton Manufacturing Company, Inc.Inventor: Marc Gallo
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Publication number: 20140132084Abstract: A controllable electrical receptacle is disclosed. The electrical receptacle includes a housing having a pair of sockets suitable for receiving electrical plugs. The receptacle includes an antenna disposed beneath a cover portion of the receptacle. The antenna is configured to receive wireless signals from an occupancy sensor or other controller and to control power to the sockets based on the received signals. The antenna is also configured to transmit wireless signals. The antenna may be routed around the sockets to minimize interference caused by metal components of the receptacle. The antenna may be sandwiched between a pair of non-metal layers of the housing to avoid direct exposure to the environment while maintaining a desired performance. In one embodiment the antenna is a wire member received within a routing groove formed in a portion of the housing. The routing groove includes features for retaining the wire member in the groove.Type: ApplicationFiled: November 12, 2012Publication date: May 15, 2014Applicant: LEVITON MANUFACTURING COMPANY, INC.Inventors: Hoa Pham, Dan Wright, Jason Betournay, Subramanian Muthu
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Patent number: 8717718Abstract: Electrical load controls are provided which include an electrical switch assembly and a fault protection device within a common housing. The switch assembly includes an actuator, and is responsive to actuation of the actuator to switch ON or OFF electricity to the load. The protection device automatically responds to a fault condition by overriding the switch assembly by automatically blocking electrical connection between phase input and output terminals and neutral input and output terminals of the load control. The actuator includes a single external interface element. In one embodiment, actuation of the actuator switches ON or OFF electricity via control of the fault protection device, and in another embodiment, movement of the interface away from the housing exposes within the housing an internal user interface for the fault protection device.Type: GrantFiled: April 11, 2011Date of Patent: May 6, 2014Assignee: Leviton Manufacturing Company, Inc.Inventors: Michael Kamor, Adam Kevelos
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Publication number: 20140092503Abstract: Circuit interrupting devices are provided. One circuit interrupting device includes a fault sensor configured to output a sensor signal; a voltage sensor configured to sense a reference voltage; and a controller configured to determine an occurrence of an actual fault based on the sensor signal and the reference voltage. The circuit interrupting device further includes an amplifier configured to receive the sensor signal and the reference voltage and output an amplified signal; an analog-to-digital converter configured to receive the reference voltage and the amplified signal and output respective digital signals corresponding to the reference voltage and the amplified signal; and a line interrupt assembly configured to interrupt current flow through a conductive path when a characteristic of the sensor signal exceeds an actual fault threshold.Type: ApplicationFiled: October 1, 2012Publication date: April 3, 2014Applicant: LEVITON MANUFACTURING COMPANY, INCInventor: Michael Ostrovsky
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Patent number: 8664886Abstract: Timer-based switching circuit synchronization in an electrical dimmer is provided. The energizing of a switching circuit in a dimmer is synchronized with an AC wave to facilitate providing by the dimmer electrical power to a load. The synchronizing includes starting a timer having a predetermined timeout, responsive to receipt of a zero-crossing signal. Responsive to receipt of a subsequent zero-crossing signal prior to reaching the timeout, the timer is restarted, and responsive to expiration of the timeout, a switching circuit is energized at a predetermined firing angle with respect to the zero-crossing signal to supply electrical power to the load.Type: GrantFiled: December 22, 2011Date of Patent: March 4, 2014Assignee: Leviton Manufacturing Company, Inc.Inventor: Michael Ostrovsky
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Publication number: 20140039713Abstract: A system and method are disclosed for providing fail-safe operation of an occupancy sensor so that a load associated with the sensor will be energized in the event that the sensor malfunctions. Short voltage pulses are applied to a signal line by an occupancy sensor. A load control device recognizes the pulses as an indication that the sensor is in a healthy condition. If the load control device does not recognize the voltage pulses, it assumes the sensor is faulty and energizes the load (light) associated with the monitored space. The voltage pulses are different from the normal signals sent by the sensor to the load control device that indicate an “occupied” condition of the space. Other embodiments are described and claimed.Type: ApplicationFiled: August 1, 2012Publication date: February 6, 2014Applicant: LEVITON MANUFACTURING COMPANY, INC.Inventors: Robert L. Hick, Richard A. Leinen
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Publication number: 20130342687Abstract: A system and method are disclosed for adjusting a field of view of an image sensor to correspond to an outer dimension of a monitored space. The image sensor may be part of an occupancy sensor configured to sense movement within the space and to adjust lighting in the area accordingly. The occupancy sensor includes an image sensor coupled to a processor, an input device for adjusting the field of view in a plurality of dimensions. By knowing the height at which the sensor will be mounted above the space, a user can employ the input device to adjust the field of view of the sensor so that when the sensor is mounted the field of view corresponds to at least one outer dimension of the monitored space. Other embodiments are disclosed and claimed.Type: ApplicationFiled: June 22, 2012Publication date: December 26, 2013Applicant: LEVITON MANUFACTURING COMPANY, INC.Inventor: Richard Leinen