Patents by Inventor David James Lesslie
David James Lesslie 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).
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Patent number: 9307615Abstract: Lighting control systems, control modules for contactors, and methods of operating a lighting control system are described. In one example, a control module for a lighting contactor includes a controller, a power supply, and a control mode selector. The controller is configured to control operation of a lighting contactor in response to at least one control signal. The controller is selectively operable in a plurality of control modes. The power supply is configured to receive the at least one control signal and provide power to the controller. The control mode selector is coupled to the controller and operable to operate the controller in a selected control mode of the plurality of control modes.Type: GrantFiled: July 17, 2014Date of Patent: April 5, 2016Assignee: General Electric CompanyInventors: Daniel E. Civiello, David James Lesslie, Craig Benjamin Williams, Jeyaprakash Kandasamy, Babu Chinnasamy
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Publication number: 20160021719Abstract: Lighting control systems, control modules for contactors, and methods of operating a lighting control system are described. In one example, a control module for a lighting contactor includes a controller, a power supply, and a control mode selector. The controller is configured to control operation of a lighting contactor in response to at least one control signal. The controller is selectively operable in a plurality of control modes. The power supply is configured to receive the at least one control signal and provide power to the controller. The control mode selector is coupled to the controller and operable to operate the controller in a selected control mode of the plurality of control modes.Type: ApplicationFiled: July 17, 2014Publication date: January 21, 2016Inventors: Daniel E. Civiello, David James Lesslie, Craig Benjamin Williams, Jeyaprakash Kandasamy, Babu Chinnasamy
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Patent number: 8072723Abstract: The present invention comprises a method for over-current protection. The method comprising monitoring a load current value of a load current passing through a plurality of micro-electromechanical switching system devices, determining if the monitored load current value varies from a predetermined load current value, and generating a fault signal in the event that the monitored load current value varies from the predetermined load current value. The method also comprises diverting the load current from the plurality of micro-electromechanical switching system devices in response to the fault signal and determining if the variance in the load current value was due to a true fault trip or a false nuisance trip.Type: GrantFiled: June 19, 2007Date of Patent: December 6, 2011Assignee: General Electric CompanyInventors: William James Premerlani, Robert Joseph Caggiano, Kanakasabapathi Subramanian, Brent Charles Kumfer, Charles Stephan Pitzen, David James Lesslie, Joshua Isaac Wright, Parag Thakre
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Patent number: 7885043Abstract: The present invention provides a remote operable over-current protection apparatus. The apparatus includes control circuitry integrally arranged on a current path and a micro electromechanical system (MEMS) switch disposed on the current path, the MEMS switch responsive to the control circuitry to facilitate the interruption of an electrical current passing through the current path. The apparatus further includes a communication connection in signal connection with the control circuitry such that the control circuitry is responsive to a control signal on the communication connection to control a state of the MEMS switch.Type: GrantFiled: June 15, 2007Date of Patent: February 8, 2011Assignee: General Electric CompanyInventors: Brent Charles Kumfer, William James Premerlani, Robert Joseph Caggiano, Kanakasabapathi Subramanian, Christopher Fred Keimel, Charles Stephan Pitzen, David James Lesslie, Parag Thakre
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Patent number: 7589942Abstract: A motor starter is disclosed. The motor starter includes control circuitry integrally arranged with at least one current path and a processor included in the control circuitry. The motor starter further includes at least one processor algorithm residing on the processor, the at least one processor algorithm containing instructions to monitor characteristics of current on the at least one current path and to provide data pertaining to a condition of the at least one current path. The motor starter further includes a micro electromechanical system (MEMS) switch disposed on the at least one current path, the MEMS switch responsive to the control circuitry to facilitate the control of an electrical current, passing through the at least one current path.Type: GrantFiled: June 15, 2007Date of Patent: September 15, 2009Assignee: General Electric CompanyInventors: Brent Charles Kumfer, William James Premerlani, Robert Joseph Cagglano, Kanakasabapathi Subramanian, David James Lesslie
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Patent number: 7542250Abstract: A motor starter is provided. The motor starter includes micro-electromechanical system switching circuitry. The system may further include solid state switching circuitry coupled in a parallel circuit with the electromechanical switching circuitry, and a controller coupled to the electromechanical switching circuitry and the solid state switching circuitry. The controller may be configured to perform selective switching of a load current from a motor connected to the motor starter. The switching may be performed between the electromechanical switching circuitry and the solid state switching circuitry in response to a load current condition appropriate to an operational capability of a respective one of the switching circuitries.Type: GrantFiled: January 10, 2007Date of Patent: June 2, 2009Assignee: General Electric CompanyInventors: William James Premerlani, Fengfeng Tao, Joshua Isaac Wright, Kanakasabapathi Subramanian, John Norton Park, Robert Joseph Caggiano, David James Lesslie, Brent Charles Kumfer, Charles Stephan Pitzen, Kathleen Ann O'Brien, Edward Keith Howell
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Publication number: 20080316664Abstract: The present invention comprises a method for over-current protection. The method comprising monitoring a load current value of a load current passing through a plurality of micro-electromechanical switching system devices, determining if the monitored load current value varies from a predetermined load current value, and generating a fault signal in the event that the monitored load current value varies from the predetermined load current value. The method also comprises diverting the load current from the plurality of micro-electromechanical switching system, devices in response to the fault signal and determining if the variance in the load current value was due to a true fault trip or a false nuisance trip.Type: ApplicationFiled: June 19, 2007Publication date: December 25, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: William James Premerlani, Robert Joseph Caggiano, Kanakasabapathi Subramanian, Brent Charles Kumfer, Charles Stephan Pitzen, David James Lesslie, Joshua Isaac Wright, Parag Thakre
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Publication number: 20080310057Abstract: A motor starter is disclosed. The motor starter includes control circuitry integrally arranged with at least one current path and a processor included in the control circuitry. The motor starter further includes at least one processor algorithm residing on the processor, the at least one processor algorithm containing instructions to monitor characteristics of current on the at least one current path and to provide data pertaining to a condition of the at least one current path. The motor starter further includes a micro electromechanical system (MEMS) switch disposed on the at least one current path, the MEMS switch responsive to the control circuitry to facilitate the control of an electrical current, passing through the at least one current path.Type: ApplicationFiled: June 15, 2007Publication date: December 18, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: Brent Charles Kumfer, William James Premerlani, Robert Joseph Caggiano, Kanakasabapathi Subramanian, David James Lesslie
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Publication number: 20080310056Abstract: The present invention provides a remote operable over-current protection apparatus. The apparatus includes control circuitry integrally arranged on a current path and a micro electromechanical system (MEMS) switch disposed on the current path, the MEMS switch responsive to the control circuitry to facilitate the interruption of an electrical current passing through the current path. The apparatus further includes a communication connection in signal connection with the control circuitry such that the control circuitry is responsive to a control signal on the communication connection to control a state of the MEMS switch.Type: ApplicationFiled: June 15, 2007Publication date: December 18, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: Brent Charles Kumfer, William James Premerlani, Robert Joseph Caggiano, Kanakasabapathi Subramanian, Christopher Fred Keimel, Charles Stephan Pitzen, David James Lesslie, Parag Thakre
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Publication number: 20080165457Abstract: A motor starter is provided. The motor starter includes micro-electromechanical system switching circuitry. The system may further include solid state switching circuitry coupled in a parallel circuit with the electromechanical switching circuitry, and a controller coupled to the electromechanical switching circuitry and the solid state switching circuitry. The controller may be configured to perform selective switching of a load current from a motor connected to the motor starter. The switching may be performed between the electromechanical switching circuitry and the solid state switching circuitry in response to a load current condition appropriate to an operational capability of a respective one of the switching circuitries.Type: ApplicationFiled: January 10, 2007Publication date: July 10, 2008Inventors: William James Premerlani, Fengfeng Tao, Joshua Isaac Wright, Kanakasabapathi Subramanian, John Norton Park, Robert Joseph Caggiano, David James Lesslie, Brent Charles Kumfer, Charles Stephan Pitzen, Kathleen Ann O'Brien, Edward Keith Howell
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Publication number: 20030030567Abstract: A stack light having both steady and flashing light capabilities is disclosed. In an exemplary embodiment, the light stack or signaling light beacon comprises a light module containing a socket for a lamp, circuitry for operating the light module, and a jumper connector connected to the circuitry for selecting between flashing and steady light within the light module.Type: ApplicationFiled: August 13, 2001Publication date: February 13, 2003Inventors: William Hieby Hetzel, Geoffrey Hugh McKay, David James Lesslie, Senya Marie Hiscox Miles, Michael Constantin von Kannewurff, Joseph Patrick Smith