Patents by Inventor Timothy E. Graff

Timothy E. Graff 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: 12156313
    Abstract: Luminaires provide illumination (in some cases, in a coordinated manner with other nodes of a luminaire network) in an industrial process plant and may include one or more environmental sensors to detect various environmental (e.g., ambient) conditions within the process plant. The luminaires may be dimmable, and may be configured to sample light intensity of light provided by the luminaires (e.g., by detecting a dimmer a setting or by actively sensing the light). The luminaires may transmit the sampled light intensities to luminaire manager device(s). The luminaire manager device(s) may calculate energy usage and/or energy savings. The luminaire manager device(s) may generate reports regarding the energy usage and/or energy savings. The luminaire manager device(s) may implement control of the luminaires based on the energy usage and/or energy savings (e.g., to drive energy usage down to a desired level).
    Type: Grant
    Filed: June 7, 2022
    Date of Patent: November 26, 2024
    Assignee: APPLETON GRP LLC
    Inventors: Timothy E. Graff, Ravindra Viraj Gurjar, Jacob Zemba, Edward Brann
  • Publication number: 20240191850
    Abstract: Systems and methods of monitoring the health of an emergency power source for a luminaire node that is a node of a wireless mesh network utilized by a process control system include: utilizing, by the luminaire node, mains power to (i) route process control messages utilized by the process control system via the wireless network to thereby control an industrial process, and (ii) energize an illumination source of the luminaire node and/or maintain communications with another luminaire; storing, by the luminaire node, energy in an energy storage device configured to perform these functions during a loss of mains power; monitoring, by the luminaire node, the energy storage device to determine a health status associated with the energy storage device; and sending, by the luminaire node, an indication of the health status associated with the energy storage device via the wireless mesh network utilized by the process control system.
    Type: Application
    Filed: June 6, 2022
    Publication date: June 13, 2024
    Inventors: Timothy E. Graff, Ravindra Viraj Gurjar
  • Patent number: 11940122
    Abstract: A luminaire including an outer support member having a plurality of LED arrays; a driver housing centrally located within an interior of the outer support member; a plurality of attachment arms extending from the outer support member and secured to the driver housing, resulting in open spaces between the attachment arms and between outer support member and the driver housing and a plurality of heat dissipating fins extending from an upper surface of the outer support member to the driver housing.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: March 26, 2024
    Assignee: Appleton Grp LLC
    Inventors: Timothy E. Graff, Santosh K. Patil, Sumit Kumar, Karan Mandlekar, SB Chethan, Nagesh C. Nath, Sourabh D. Patil, Shriprasad V. Khadse
  • Patent number: 11828440
    Abstract: An encapsulated LED engine having a printed circuit board, a plurality of LED arrays, each of said LED arrays mounted on said printed circuit board, and electrically connected to each other, an encapsulation layer comprising a pre-molded optic positioned over and adhered to the printed circuit board, and a frame positioned over the LED arrays and secured to the printed circuit board. A method of forming an encapsulated LED engine is also provided.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: November 28, 2023
    Assignee: Appleton Grp LLC
    Inventors: Timothy E. Graff, Jean-Francois Monteil, Marius Sav, Sumit Kumar
  • Patent number: 11746993
    Abstract: An encapsulated LED engine including a circuit board, one or more of LED arrays, each of the one or more LED arrays mounted on the circuit board, a pre-molded encapsulation layer positioned over and adhered to the circuit board, a frame positioned over the one or more LED arrays and secured to the circuit board, a metal sheet positioned between the pre-molded encapsulation layer and the frame, wherein the pre-molded encapsulation layer includes a plurality of lenses positioned over a plurality of LEDs on each of the one or more LED arrays, and wherein the metal sheet includes a plurality of apertures through which the plurality of lenses on the pre-molded encapsulation layer extend through.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: September 5, 2023
    Assignee: Appleton Grp LLC
    Inventors: Sumit Kumar, Jean-Francois Monteil, Timothy E. Graff
  • Publication number: 20230276559
    Abstract: A luminaire which provides illumination (in some cases, in a coordinated manner with other nodes of a lighting network) in an industrial environment is further configured to serve as a node of a wireless process control or industrial network, which may be a mesh and/or time-synchronized wireless network. Upon detecting a loss of mains power and/or other triggering condition, the luminaire node allocates an amount of available battery power to maintain the routing of process control messages, and allocates at least some of a remaining amount of available battery power (if any) for performing lighting activities such as driving illumination and/or lighting-related communications. The allocations for (e.g., the relative priorities of) support for process control and support for lighting activities may be based on an allocation configuration and/or based on instructions received from other components of the process control network and/or the lighting network, which may include user interface devices.
    Type: Application
    Filed: May 5, 2023
    Publication date: August 31, 2023
    Inventors: Timothy E. Graff, Ravindra Viraj Gurjar
  • Publication number: 20230199933
    Abstract: Luminaires provide illumination (in some cases, in a coordinated manner with other nodes of a luminaire network) in an industrial process plant and may include one or more environmental sensors to detect various environmental (e.g., ambient) conditions within the process plant. The luminaires may be dimmable, and may be configured to sample light intensity of light provided by the luminaires (e.g., by detecting a dimmer a setting or by actively sensing the light). The luminaires may transmit the sampled light intensities to luminaire manager device(s). The luminaire manager device(s) may calculate energy usage and/or energy savings. The luminaire manager device(s) may generate reports regarding the energy usage and/or energy savings. The luminaire manager device(s) may implement control of the luminaires based on the energy usage and/or energy savings (e.g., to drive energy usage down to a desired level).
    Type: Application
    Filed: June 7, 2022
    Publication date: June 22, 2023
    Inventors: Timothy E. Graff, Ravindra Viraj Gurjar, Jacob Zemba, Edward Brann
  • Patent number: 11672070
    Abstract: A luminaire which provides illumination (in some cases, in a coordinated manner with other nodes of a lighting network) in an industrial environment is further configured to serve as a node of a wireless process control or industrial network, which may be a mesh and/or time-synchronized wireless network. Upon detecting a loss of mains power and/or other triggering condition, the luminaire node allocates an amount of available battery power to maintain the routing of process control messages, and allocates at least some of a remaining amount of available battery power (if any) for performing lighting activities such as driving illumination and/or lighting-related communications. The allocations for (e.g., the relative priorities of) support for process control and support for lighting activities may be based on an allocation configuration and/or based on instructions received from other components of the process control network and/or the lighting network, which may include user interface devices.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: June 6, 2023
    Assignee: APPLETON GRP LLC
    Inventors: Timothy E. Graff, Ravindra Viraj Gurjar
  • Publication number: 20230156888
    Abstract: An intrinsically safe (IS) luminaire disposed in a hazardous environment provides visible light and serves as a primary, auxiliary, back-up, and/or charging source of IS DC power for external devices disposed in the hazardous environment, such as process control devices and equipment. The luminaire includes a power converter that converts received power into DC power, an IS barrier that converts the DC power into IS DC power native to or utilized by a recipient external device, and a power distribution port via which IS DC power is delivered to the external device. In some configurations, the luminaire monitors communicates statuses, alerts, and/or other information corresponding to delivering IS DC power to one or more external devices to a host and/or portable communication device. The luminaire may include multiple IS barriers of same and/or different IS ratings, and may dynamically control activation/deactivation of the IS barriers and/or usages thereof.
    Type: Application
    Filed: January 5, 2023
    Publication date: May 18, 2023
    Inventors: Timothy E. Graff, Ravindra Viraj Gurjar, Yicheng Peter Pan
  • Publication number: 20230066713
    Abstract: The present disclosure relates to the field of electrical engineering and discloses an assembly (100) for facilitating safe electrical connection between a circuit breaker (10) and a plurality of electrical connectors (20) inside an electrical panel board (30). The assembly comprises a plurality of connecting members (102) and a support block (104). Each connecting member (102) has a first connecting end (102a) connected to the terminals (10c) of the circuit breaker (10) and a second connecting end (102b) connected to the electrical connectors (20). The support block (104) comprises a plurality of projecting surfaces (104a), slots (104b) defined between the projecting surfaces (104a), and elongated members (104c). The slots (104b) provide a rigid support to the electrical connectors (20) to prevent bending and rotation of the connectors (20) on being subjected to a high torque. The elongated members (104c) isolate the connecting members (102) from each other.
    Type: Application
    Filed: May 3, 2022
    Publication date: March 2, 2023
    Inventors: Vaibhav B. Hande, Timothy E. Graff
  • Patent number: 11553571
    Abstract: An intrinsically safe (IS) luminaire disposed in a hazardous environment provides visible light and serves as a primary, auxiliary, back-up, and/or charging source of IS DC power for external devices disposed in the hazardous environment, such as process control devices and equipment. The luminaire includes a power converter that converts received power into DC power, an IS barrier that converts the DC power into IS DC power native to or utilized by a recipient external device, and a power distribution port via which IS DC power is delivered to the external device. In some configurations, the luminaire monitors communicates statuses, alerts, and/or other information corresponding to delivering IS DC power to one or more external devices to a host and/or portable communication device. The luminaire may include multiple IS barriers of same and/or different IS ratings, and may dynamically control activation/deactivation of the IS barriers and/or usages thereof.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: January 10, 2023
    Assignee: APPLETON GRP LLC
    Inventors: Timothy E. Graff, Ravindra Viraj Gurjar, Yicheng Peter Pan
  • Publication number: 20220418073
    Abstract: Luminaires which provide illumination (in some cases, in a coordinated manner with other nodes of a lighting network) in an industrial process plant include one or more environmental sensors to detect various environmental (e.g., ambient) conditions within the process plant. The luminaires transmit signals indicative of detected conditions (and optionally, respective measurements thereof) to a computing device or host which indicates, on a representation or map of a physical layout of the process plant, the respective detections at respective map locations corresponding to respective locations of the luminaires at the process plant to thereby generate an environmental condition map. The environmental condition map may be dynamically updated responsive to additional luminaire signals, utilized by a process control system to generate alarms, alerts, etc., and/or presented on user interfaces of the process control system and/or of the lighting network.
    Type: Application
    Filed: July 13, 2021
    Publication date: December 29, 2022
    Inventors: Timothy E. Graff, Ravindra Viraj Gurjar
  • Publication number: 20220349539
    Abstract: An LED luminaire including an outer LED support member having a plurality of LED arrays positioned on a lower side thereof, an LED driver housing centrally located within an interior of the outer LED support member, wherein the outer LED support member is secured to the LED driver housing with a plurality of attachment arms that extend from inner surface of the outer LED support member to the LED driver housing, such that are open spaces between the plurality of attachment arms and between the inner surface of outer LED support member and the LED driver housing, and a plurality of heat dissipating fins positioned on an upper surface of the outer LED support member extending towards the LED driver housing.
    Type: Application
    Filed: March 31, 2022
    Publication date: November 3, 2022
    Inventors: Timothy E. Graff, Santosh K. Patil, Sumit Kumar, Karan Mandlekar, SB Chethan, Nagesh C. Nath, Sourabh D. Patil, Shriprasad V. Khadse
  • Publication number: 20220330407
    Abstract: A luminaire which provides illumination (in some cases, in a coordinated manner with other nodes of a lighting network) in an industrial environment is further configured to serve as a node of a wireless process control or industrial network, which may be a mesh and/or time-synchronized wireless network. Upon detecting a loss of mains power and/or other triggering condition, the luminaire node allocates an amount of available battery power to maintain the routing of process control messages, and allocates at least some of a remaining amount of available battery power (if any) for performing lighting activities such as driving illumination and/or lighting-related communications. The allocations for (e.g., the relative priorities of) support for process control and support for lighting activities may be based on an allocation configuration and/or based on instructions received from other components of the process control network and/or the lighting network, which may include user interface devices.
    Type: Application
    Filed: May 28, 2021
    Publication date: October 13, 2022
    Inventors: Timothy E. Graff, Ravindra Viraj Gurjar
  • Publication number: 20220307675
    Abstract: An encapsulated LED engine having a printed circuit board, a plurality of LED arrays, each of said LED arrays mounted on said printed circuit board, and electrically connected to each other, an encapsulation layer comprising a pre-molded optic positioned over and adhered to the printed circuit board, and a frame positioned over the LED arrays and secured to the printed circuit board. A method of forming an encapsulated LED engine is also provided.
    Type: Application
    Filed: March 4, 2022
    Publication date: September 29, 2022
    Inventors: Timothy E. Graff, Jean-Francois Monteil, Marius Sav, Sumit Kumar
  • Patent number: 11265989
    Abstract: A low voltage lighting system including a fixture (200) having an array of LEDs (204) and an LED driver circuit (202). The LED driver circuit (202) includes a Switch-mode Power Supply (SMPS) unit (206), a current sensing unit (210), a control unit (208) and a dimming input level shifting and signal conditioning unit (212). The SMPS unit (206) produces an adequate DC power (+VLED, ?VLED) for driving the LEDs (204). The control unit (208) receives a sensed current signal from the current sensing unit (210) and controls the SMPS unit (206) to maintain the output current within a pre-determined range. The control unit (208) receives a dimming signal from the dimming unit (212) or an emergency signal from a supply unit (104) to alter the output power of the SMPS unit (206) from normal mode to dimming mode or emergency mode respectively.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: March 1, 2022
    Assignee: Appleton Grp LLC
    Inventors: Timothy E. Graff, Pankaj P. Tikle, Ajay Tripathi
  • Patent number: 11232684
    Abstract: A smart luminaire system in which a primary luminaire controls and/or communicates with a set of one or more secondary luminaires may be disposed in a hazardous environment, such as an industrial process plant, manufacturing facility, oil refinery, etc. The primary luminaire may send driving commands to the set of secondary luminaires via an analog portion of a hybrid wired communication interface, and the driving commands may cause a driver of a second luminaire to energize on-board illumination source(s) at various intensities. The primary luminaire may send and/or receive administrative messages to/from the secondary luminaires via a digital portion of its hybrid wired communication interface. The smart luminaire system may be a stand-alone system, or may communicate with a controller or back-end system via a wireless communication interface of the primary luminaire, e.g., to receive control instructions and/or to send consolidated administrative messages on behalf of the smart luminaire system.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: January 25, 2022
    Assignee: APPLETON GRP LLC
    Inventors: Ravindra Viraj Gurjar, Timothy E. Graff, Yicheng Peter Pan
  • Patent number: 11219112
    Abstract: A luminaire network improves energy efficiency, reduces light pollution, improves the robustness of luminaire control, and reduces maintenance time and costs by implementing intelligent and selective lighting control. For example, the luminaire network may automatically control dimming, light activation, light deactivation, static or dynamic luminaire grouping, and luminaire group control by implementing a hybrid control scheme that accounts for (i) local or global fixed schedules (e.g., based on time of day, worker schedules, etc.), (ii) detected daylight, (iii) detected motion of workers, and (iv) feedback from luminaires in the luminaire network. Further, one or more electronic devices (e.g., mobile devices) may couple to the luminaire network and may facilitate easy monitoring, configuration, and manual control of luminaires in the luminaire network, even when remotely connected to the luminaire network (e.g., via the cloud).
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: January 4, 2022
    Assignee: APPLETON GRP LLC
    Inventors: Timothy E. Graff, Ravindra Viraj Gurjar, Yicheng Peter Pan
  • Patent number: 11181253
    Abstract: An LED lighting fixture including a side access door and a compartment for housing electrical components required for operation of the LED fixture. The side access door secured to the compartment by a hinge structure, such that the side door is retained when in an open position.
    Type: Grant
    Filed: March 14, 2020
    Date of Patent: November 23, 2021
    Assignee: Appleton Grp LLC
    Inventors: Harish P. Kulkarni, Timothy E. Graff, Santosh K. Patil
  • Patent number: D939126
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: December 21, 2021
    Assignee: Appleton Grp LLC
    Inventors: Harish P. Kulkarni, Timothy E. Graff, James G. Brand, Santosh K. Patil, Sumit Kumar